packages: clean up the package folder

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 37007

14 files changed, 8537 insertions, 0 deletions

diff --git a/package/utils/lua/Makefile b/package/utils/lua/Makefile
new file mode 100644
index 0000000000..e7e011a405
--- /dev/null
+++ b/package/utils/lua/Makefile
@@ -0,0 +1,183 @@
+# 
+# Copyright (C) 2006-2012 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=lua
+PKG_VERSION:=5.1.5
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=http://www.lua.org/ftp/ \
+	http://ftp.gwdg.de/pub/languages/lua/ \
+	http://mirrors.dotsrc.org/lua/ \
+	http://www.tecgraf.puc-rio.br/lua/ftp/
+PKG_MD5SUM:=2e115fe26e435e33b0d5c022e4490567
+PKG_BUILD_PARALLEL:=1
+
+PKG_LICENSE:=MIT
+PKG_LICENSE_FILES:=COPYRIGHT
+
+HOST_PATCH_DIR := ./patches-host
+
+include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/host-build.mk
+
+define Package/lua/Default
+  SUBMENU:=Lua
+  SECTION:=lang
+  CATEGORY:=Languages
+  TITLE:=Lua programming language
+  URL:=http://www.lua.org/
+  MAINTAINER:=Jo-Philipp Wich <jow@openwrt.org>
+endef
+
+define Package/lua/Default/description
+ Lua is a powerful light-weight programming language designed for extending 
+ applications. Lua is also frequently used as a general-purpose, stand-alone 
+ language. Lua is free software.
+endef
+
+define Package/liblua
+$(call Package/lua/Default)
+  SUBMENU:=
+  SECTION:=libs
+  CATEGORY:=Libraries
+  TITLE+= (libraries)
+endef
+
+define Package/liblua/description
+$(call Package/lua/Default/description)
+ This package contains the Lua shared libraries, needed by other programs.
+endef
+
+define Package/lua
+$(call Package/lua/Default)
+  DEPENDS:=+liblua
+  TITLE+= (interpreter)
+endef
+
+define Package/lua/description
+$(call Package/lua/Default/description)
+ This package contains the Lua language interpreter.
+endef
+
+define Package/luac
+$(call Package/lua/Default)
+  DEPENDS:=+liblua
+  TITLE+= (compiler)
+endef
+
+define Package/luac/description
+$(call Package/lua/Default/description)
+ This package contains the Lua language compiler.
+endef
+
+define Package/lua-examples
+$(call Package/lua/Default)
+  DEPENDS:=lua
+  TITLE+= (examples)
+endef
+
+define Package/lua-examples/description
+$(call Package/lua/Default/description)
+ This package contains Lua language examples.
+endef
+
+define Build/Configure
+endef
+
+TARGET_CFLAGS += -DLUA_USE_LINUX $(FPIC) -std=gnu99
+
+ifneq ($(CONFIG_USE_EGLIBC),)
+  ifeq ($(CONFIG_EGLIBC_OPTION_EGLIBC_UTMP),)
+    TARGET_CFLAGS += -DNO_GETLOGIN
+  endif
+endif
+
+define Build/Compile
+	$(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR) \
+		CC="$(TARGET_CROSS)gcc" \
+		AR="$(TARGET_CROSS)ar rcu" \
+		RANLIB="$(TARGET_CROSS)ranlib" \
+		INSTALL_ROOT=/usr \
+		CFLAGS="$(TARGET_CPPFLAGS) $(TARGET_CFLAGS)" \
+		MYLDFLAGS="$(TARGET_LDFLAGS)" \
+		PKG_VERSION=$(PKG_VERSION) \
+		linux
+	rm -rf $(PKG_INSTALL_DIR)
+	mkdir -p $(PKG_INSTALL_DIR)
+	$(MAKE) -C $(PKG_BUILD_DIR) \
+		INSTALL_TOP="$(PKG_INSTALL_DIR)/usr" \
+		install
+endef
+
+define Host/Configure
+	$(SED) 's,"/usr/local/","$(STAGING_DIR_HOST)/",' $(HOST_BUILD_DIR)/src/luaconf.h
+endef
+
+ifeq ($(HOST_OS),Darwin)
+	LUA_OS:=macosx
+else
+	ifeq ($(HOST_OS),FreeBSD)
+		LUA_OS:=freebsd
+	else
+		LUA_OS:=linux
+	endif
+endif
+
+define Host/Compile
+	$(MAKE) -C $(HOST_BUILD_DIR) \
+		CC="$(HOSTCC) -std=gnu99" \
+		$(LUA_OS)
+endef
+
+define Host/Install
+	$(MAKE) -C $(HOST_BUILD_DIR) \
+		INSTALL_TOP="$(STAGING_DIR_HOST)" \
+		install
+endef
+
+define Build/InstallDev
+	$(INSTALL_DIR) $(1)/usr/include
+	$(CP) $(PKG_INSTALL_DIR)/usr/include/lua{,lib,conf}.h $(1)/usr/include/
+	$(CP) $(PKG_INSTALL_DIR)/usr/include/lauxlib.h $(1)/usr/include/
+	$(CP) $(PKG_INSTALL_DIR)/usr/include/lnum_config.h $(1)/usr/include/
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/liblua.{a,so*} $(1)/usr/lib/
+	ln -sf liblua.so.$(PKG_VERSION) $(1)/usr/lib/liblualib.so
+	$(INSTALL_DIR) $(1)/usr/lib/pkgconfig
+	$(CP) $(PKG_BUILD_DIR)/etc/lua.pc $(1)/usr/lib/pkgconfig/
+endef
+
+define Package/liblua/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/liblua.so.* $(1)/usr/lib/
+endef
+
+define Package/lua/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/lua $(1)/usr/bin/
+endef
+
+define Package/luac/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/luac $(1)/usr/bin/
+endef
+
+define Package/lua-examples/install
+	$(INSTALL_DIR) $(1)/usr/share/lua/examples
+	$(INSTALL_DATA) $(PKG_BUILD_DIR)/test/*.lua \
+		$(1)/usr/share/lua/examples/
+endef
+
+$(eval $(call BuildPackage,liblua))
+$(eval $(call BuildPackage,lua))
+$(eval $(call BuildPackage,luac))
+$(eval $(call BuildPackage,lua-examples))
+$(eval $(call HostBuild))
+
diff --git a/package/utils/lua/patches-host/010-lua-5.1.3-lnum-full-260308.patch b/package/utils/lua/patches-host/010-lua-5.1.3-lnum-full-260308.patch
new file mode 100644
index 0000000000..74b8c6f8f0
--- /dev/null
+++ b/package/utils/lua/patches-host/010-lua-5.1.3-lnum-full-260308.patch
@@ -0,0 +1,3736 @@
+--- a/src/Makefile
++++ b/src/Makefile
+@@ -25,7 +25,7 @@ PLATS= aix ansi bsd freebsd generic linu
+ LUA_A=	liblua.a
+ CORE_O=	lapi.o lcode.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o lmem.o \
+ 	lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o  \
+-	lundump.o lvm.o lzio.o
++	lundump.o lvm.o lzio.o lnum.o
+ LIB_O=	lauxlib.o lbaselib.o ldblib.o liolib.o lmathlib.o loslib.o ltablib.o \
+ 	lstrlib.o loadlib.o linit.o
+ 
+@@ -148,6 +148,7 @@ llex.o: llex.c lua.h luaconf.h ldo.h lob
+ lmathlib.o: lmathlib.c lua.h luaconf.h lauxlib.h lualib.h
+ lmem.o: lmem.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h \
+   ltm.h lzio.h lmem.h ldo.h
++lnum.o: lnum.c lua.h llex.h lnum.h
+ loadlib.o: loadlib.c lua.h luaconf.h lauxlib.h lualib.h
+ lobject.o: lobject.c lua.h luaconf.h ldo.h lobject.h llimits.h lstate.h \
+   ltm.h lzio.h lmem.h lstring.h lgc.h lvm.h
+@@ -179,4 +180,18 @@ lzio.o: lzio.c lua.h luaconf.h llimits.h
+ print.o: print.c ldebug.h lstate.h lua.h luaconf.h lobject.h llimits.h \
+   ltm.h lzio.h lmem.h lopcodes.h lundump.h
+ 
++luaconf.h: lnum_config.h
++lapi.c: lnum.h
++lauxlib.c: llimits.h
++lbaselib.c: llimits.h lobject.h lapi.h
++lcode.c: lnum.h
++liolib.c: lnum.h llex.h
++llex.c: lnum.h
++lnum.h: lobject.h
++lobject.c: llex.h lnum.h
++ltable.c: lnum.h
++lua.c: llimits.h
++lvm.c: llex.h lnum.h
++print.c: lnum.h
++
+ # (end of Makefile)
+--- a/src/lapi.c
++++ b/src/lapi.c
+@@ -28,7 +28,7 @@
+ #include "ltm.h"
+ #include "lundump.h"
+ #include "lvm.h"
+-
++#include "lnum.h"
+ 
+ 
+ const char lua_ident[] =
+@@ -241,12 +241,13 @@ LUA_API void lua_pushvalue (lua_State *L
+ 
+ LUA_API int lua_type (lua_State *L, int idx) {
+   StkId o = index2adr(L, idx);
+-  return (o == luaO_nilobject) ? LUA_TNONE : ttype(o);
++  return (o == luaO_nilobject) ? LUA_TNONE : ttype_ext(o);
+ }
+ 
+ 
+ LUA_API const char *lua_typename (lua_State *L, int t) {
+   UNUSED(L);
++  lua_assert( t!= LUA_TINT );
+   return (t == LUA_TNONE) ? "no value" : luaT_typenames[t];
+ }
+ 
+@@ -264,6 +265,14 @@ LUA_API int lua_isnumber (lua_State *L, 
+ }
+ 
+ 
++LUA_API int lua_isinteger (lua_State *L, int idx) {
++  TValue tmp;
++  lua_Integer dum;
++  const TValue *o = index2adr(L, idx);
++  return tonumber(o,&tmp) && (ttisint(o) || tt_integer_valued(o,&dum));
++}
++
++
+ LUA_API int lua_isstring (lua_State *L, int idx) {
+   int t = lua_type(L, idx);
+   return (t == LUA_TSTRING || t == LUA_TNUMBER);
+@@ -309,31 +318,66 @@ LUA_API int lua_lessthan (lua_State *L, 
+ }
+ 
+ 
+-
+ LUA_API lua_Number lua_tonumber (lua_State *L, int idx) {
+   TValue n;
+   const TValue *o = index2adr(L, idx);
+-  if (tonumber(o, &n))
++  if (tonumber(o, &n)) {
++#ifdef LNUM_COMPLEX
++    if (nvalue_img(o) != 0)
++      luaG_runerror(L, "expecting a real number");
++#endif
+     return nvalue(o);
+-  else
+-    return 0;
++  }
++  return 0;
+ }
+ 
+ 
+ LUA_API lua_Integer lua_tointeger (lua_State *L, int idx) {
+   TValue n;
++    /* Lua 5.1 documented behaviour is to return nonzero for non-integer:
++     * "If the number is not an integer, it is truncated in some non-specified way." 
++     * I would suggest to change this, to return 0 for anything that would
++     * not fit in 'lua_Integer'.
++     */
++#ifdef LUA_COMPAT_TOINTEGER
++  /* Lua 5.1 compatible */
+   const TValue *o = index2adr(L, idx);
+   if (tonumber(o, &n)) {
+-    lua_Integer res;
+-    lua_Number num = nvalue(o);
+-    lua_number2integer(res, num);
+-    return res;
++    lua_Integer i;
++    lua_Number d;
++    if (ttisint(o)) return ivalue(o);
++    d= nvalue_fast(o);
++# ifdef LNUM_COMPLEX
++    if (nvalue_img_fast(o) != 0)
++      luaG_runerror(L, "expecting a real number");
++# endif
++    lua_number2integer(i, d);
++    return i;
+   }
+-  else
+-    return 0;
++#else
++  /* New suggestion */
++  const TValue *o = index2adr(L, idx);
++  if (tonumber(o, &n)) {
++    lua_Integer i;
++    if (ttisint(o)) return ivalue(o);
++    if (tt_integer_valued(o,&i)) return i;
++  }
++#endif
++  return 0;
+ }
+ 
+ 
++#ifdef LNUM_COMPLEX
++LUA_API lua_Complex lua_tocomplex (lua_State *L, int idx) {
++  TValue tmp;
++  const TValue *o = index2adr(L, idx);
++  if (tonumber(o, &tmp))
++    return nvalue_complex(o);
++  return 0;
++}
++#endif
++
++
+ LUA_API int lua_toboolean (lua_State *L, int idx) {
+   const TValue *o = index2adr(L, idx);
+   return !l_isfalse(o);
+@@ -364,6 +408,7 @@ LUA_API size_t lua_objlen (lua_State *L,
+     case LUA_TSTRING: return tsvalue(o)->len;
+     case LUA_TUSERDATA: return uvalue(o)->len;
+     case LUA_TTABLE: return luaH_getn(hvalue(o));
++    case LUA_TINT:
+     case LUA_TNUMBER: {
+       size_t l;
+       lua_lock(L);  /* `luaV_tostring' may create a new string */
+@@ -426,6 +471,8 @@ LUA_API void lua_pushnil (lua_State *L) 
+ }
+ 
+ 
++/* 'lua_pushnumber()' may lose accuracy on integers, 'lua_pushinteger' will not.
++ */
+ LUA_API void lua_pushnumber (lua_State *L, lua_Number n) {
+   lua_lock(L);
+   setnvalue(L->top, n);
+@@ -434,12 +481,22 @@ LUA_API void lua_pushnumber (lua_State *
+ }
+ 
+ 
+-LUA_API void lua_pushinteger (lua_State *L, lua_Integer n) {
++LUA_API void lua_pushinteger (lua_State *L, lua_Integer i) {
++  lua_lock(L);
++  setivalue(L->top, i);
++  api_incr_top(L);
++  lua_unlock(L);
++}
++
++
++#ifdef LNUM_COMPLEX
++LUA_API void lua_pushcomplex (lua_State *L, lua_Complex v) {
+   lua_lock(L);
+-  setnvalue(L->top, cast_num(n));
++  setnvalue_complex( L->top, v );
+   api_incr_top(L);
+   lua_unlock(L);
+ }
++#endif
+ 
+ 
+ LUA_API void lua_pushlstring (lua_State *L, const char *s, size_t len) {
+@@ -569,7 +626,7 @@ LUA_API void lua_rawgeti (lua_State *L, 
+   lua_lock(L);
+   o = index2adr(L, idx);
+   api_check(L, ttistable(o));
+-  setobj2s(L, L->top, luaH_getnum(hvalue(o), n));
++  setobj2s(L, L->top, luaH_getint(hvalue(o), n));
+   api_incr_top(L);
+   lua_unlock(L);
+ }
+@@ -597,6 +654,9 @@ LUA_API int lua_getmetatable (lua_State 
+     case LUA_TUSERDATA:
+       mt = uvalue(obj)->metatable;
+       break;
++    case LUA_TINT:
++      mt = G(L)->mt[LUA_TNUMBER];
++      break;
+     default:
+       mt = G(L)->mt[ttype(obj)];
+       break;
+@@ -687,7 +747,7 @@ LUA_API void lua_rawseti (lua_State *L, 
+   api_checknelems(L, 1);
+   o = index2adr(L, idx);
+   api_check(L, ttistable(o));
+-  setobj2t(L, luaH_setnum(L, hvalue(o), n), L->top-1);
++  setobj2t(L, luaH_setint(L, hvalue(o), n), L->top-1);
+   luaC_barriert(L, hvalue(o), L->top-1);
+   L->top--;
+   lua_unlock(L);
+@@ -721,7 +781,7 @@ LUA_API int lua_setmetatable (lua_State 
+       break;
+     }
+     default: {
+-      G(L)->mt[ttype(obj)] = mt;
++      G(L)->mt[ttype_ext(obj)] = mt;
+       break;
+     }
+   }
+@@ -1085,3 +1145,32 @@ LUA_API const char *lua_setupvalue (lua_
+   return name;
+ }
+ 
++
++/* Help function for 'luaB_tonumber()', avoids multiple str->number
++ * conversions for Lua "tonumber()".
++ *
++ * Also pushes floating point numbers with integer value as integer, which
++ * can be used by 'tonumber()' in scripts to bring values back to integer
++ * realm.
++ *
++ * Note: The 'back to integer realm' is _not_ to affect string conversions:
++ * 'tonumber("4294967295.1")' should give a floating point value, although
++ * the value would be 4294967296 (and storable in int64 realm).
++ */
++int lua_pushvalue_as_number (lua_State *L, int idx)
++{
++  const TValue *o = index2adr(L, idx);
++  TValue tmp;
++  lua_Integer i;
++  if (ttisnumber(o)) {
++    if ( (!ttisint(o)) && tt_integer_valued(o,&i)) {
++      lua_pushinteger( L, i );
++      return 1;
++    }
++  } else if (!tonumber(o, &tmp)) {
++    return 0;
++  }
++  if (ttisint(o)) lua_pushinteger( L, ivalue(o) );
++  else lua_pushnumber( L, nvalue_fast(o) );
++  return 1;
++}
+--- a/src/lapi.h
++++ b/src/lapi.h
+@@ -13,4 +13,6 @@
+ 
+ LUAI_FUNC void luaA_pushobject (lua_State *L, const TValue *o);
+ 
++int lua_pushvalue_as_number (lua_State *L, int idx);
++
+ #endif
+--- a/src/lauxlib.c
++++ b/src/lauxlib.c
+@@ -23,7 +23,7 @@
+ #include "lua.h"
+ 
+ #include "lauxlib.h"
+-
++#include "llimits.h"
+ 
+ #define FREELIST_REF	0	/* free list of references */
+ 
+@@ -66,7 +66,7 @@ LUALIB_API int luaL_typerror (lua_State 
+ 
+ 
+ static void tag_error (lua_State *L, int narg, int tag) {
+-  luaL_typerror(L, narg, lua_typename(L, tag));
++  luaL_typerror(L, narg, tag==LUA_TINT ? "integer" : lua_typename(L, tag));
+ }
+ 
+ 
+@@ -188,8 +188,8 @@ LUALIB_API lua_Number luaL_optnumber (lu
+ 
+ LUALIB_API lua_Integer luaL_checkinteger (lua_State *L, int narg) {
+   lua_Integer d = lua_tointeger(L, narg);
+-  if (d == 0 && !lua_isnumber(L, narg))  /* avoid extra test when d is not 0 */
+-    tag_error(L, narg, LUA_TNUMBER);
++  if (d == 0 && !lua_isinteger(L, narg))  /* avoid extra test when d is not 0 */
++    tag_error(L, narg, LUA_TINT);
+   return d;
+ }
+ 
+@@ -200,6 +200,16 @@ LUALIB_API lua_Integer luaL_optinteger (
+ }
+ 
+ 
++#ifdef LNUM_COMPLEX
++LUALIB_API lua_Complex luaL_checkcomplex (lua_State *L, int narg) {
++  lua_Complex c = lua_tocomplex(L, narg);
++  if (c == 0 && !lua_isnumber(L, narg))  /* avoid extra test when c is not 0 */
++    tag_error(L, narg, LUA_TNUMBER);
++  return c;
++}
++#endif
++
++
+ LUALIB_API int luaL_getmetafield (lua_State *L, int obj, const char *event) {
+   if (!lua_getmetatable(L, obj))  /* no metatable? */
+     return 0;
+--- a/src/lauxlib.h
++++ b/src/lauxlib.h
+@@ -57,6 +57,12 @@ LUALIB_API lua_Number (luaL_optnumber) (
+ LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg);
+ LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg,
+                                           lua_Integer def);
++#define luaL_checkint32(L,narg) ((int)luaL_checkinteger(L,narg))
++#define luaL_optint32(L,narg,def) ((int)luaL_optinteger(L,narg,def))
++
++#ifdef LNUM_COMPLEX
++  LUALIB_API lua_Complex (luaL_checkcomplex) (lua_State *L, int narg);
++#endif
+ 
+ LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
+ LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t);
+--- a/src/lbaselib.c
++++ b/src/lbaselib.c
+@@ -18,7 +18,9 @@
+ 
+ #include "lauxlib.h"
+ #include "lualib.h"
+-
++#include "llimits.h"
++#include "lobject.h"
++#include "lapi.h"
+ 
+ 
+ 
+@@ -54,20 +56,25 @@ static int luaB_tonumber (lua_State *L) 
+   int base = luaL_optint(L, 2, 10);
+   if (base == 10) {  /* standard conversion */
+     luaL_checkany(L, 1);
+-    if (lua_isnumber(L, 1)) {
+-      lua_pushnumber(L, lua_tonumber(L, 1));
++    if (lua_isnumber(L, 1)) {       /* numeric string, or a number */
++      lua_pushvalue_as_number(L,1);     /* API extension (not to lose accuracy here) */
+       return 1;
+-    }
++	}
+   }
+   else {
+     const char *s1 = luaL_checkstring(L, 1);
+     char *s2;
+-    unsigned long n;
++    unsigned LUA_INTEGER n;
+     luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range");
+-    n = strtoul(s1, &s2, base);
++    n = lua_str2ul(s1, &s2, base);
+     if (s1 != s2) {  /* at least one valid digit? */
+       while (isspace((unsigned char)(*s2))) s2++;  /* skip trailing spaces */
+       if (*s2 == '\0') {  /* no invalid trailing characters? */
++	  
++		/* Push as number, there needs to be separate 'luaB_tointeger' for
++		 * when the caller wants to preserve the bits (matters if unsigned
++		 * values are used).
++		 */
+         lua_pushnumber(L, (lua_Number)n);
+         return 1;
+       }
+@@ -144,7 +151,7 @@ static int luaB_setfenv (lua_State *L) {
+   luaL_checktype(L, 2, LUA_TTABLE);
+   getfunc(L, 0);
+   lua_pushvalue(L, 2);
+-  if (lua_isnumber(L, 1) && lua_tonumber(L, 1) == 0) {
++  if (lua_isnumber(L, 1) && lua_tointeger(L, 1) == 0) {
+     /* change environment of current thread */
+     lua_pushthread(L);
+     lua_insert(L, -2);
+@@ -209,7 +216,7 @@ static int luaB_collectgarbage (lua_Stat
+       return 1;
+     }
+     default: {
+-      lua_pushnumber(L, res);
++      lua_pushinteger(L, res);
+       return 1;
+     }
+   }
+@@ -631,6 +638,8 @@ static void base_open (lua_State *L) {
+   luaL_register(L, "_G", base_funcs);
+   lua_pushliteral(L, LUA_VERSION);
+   lua_setglobal(L, "_VERSION");  /* set global _VERSION */
++  lua_pushliteral(L, LUA_LNUM);
++  lua_setglobal(L, "_LNUM");  /* "[complex] double|float|ldouble int32|int64" */
+   /* `ipairs' and `pairs' need auxiliary functions as upvalues */
+   auxopen(L, "ipairs", luaB_ipairs, ipairsaux);
+   auxopen(L, "pairs", luaB_pairs, luaB_next);
+--- a/src/lcode.c
++++ b/src/lcode.c
+@@ -22,13 +22,18 @@
+ #include "lopcodes.h"
+ #include "lparser.h"
+ #include "ltable.h"
++#include "lnum.h"
+ 
+ 
+ #define hasjumps(e)	((e)->t != (e)->f)
+ 
+-
+ static int isnumeral(expdesc *e) {
+-  return (e->k == VKNUM && e->t == NO_JUMP && e->f == NO_JUMP);
++  int ek=
++#ifdef LNUM_COMPLEX
++    (e->k == VKNUM2) ||
++#endif
++    (e->k == VKINT) || (e->k == VKNUM);
++  return (ek && e->t == NO_JUMP && e->f == NO_JUMP);
+ }
+ 
+ 
+@@ -231,12 +236,16 @@ static int addk (FuncState *fs, TValue *
+   TValue *idx = luaH_set(L, fs->h, k);
+   Proto *f = fs->f;
+   int oldsize = f->sizek;
+-  if (ttisnumber(idx)) {
+-    lua_assert(luaO_rawequalObj(&fs->f->k[cast_int(nvalue(idx))], v));
+-    return cast_int(nvalue(idx));
++  if (ttype(idx)==LUA_TNUMBER) {
++    luai_normalize(idx);
++    lua_assert( ttype(idx)==LUA_TINT );     /* had no fraction */
++  }
++  if (ttisint(idx)) {
++    lua_assert(luaO_rawequalObj(&fs->f->k[ivalue(idx)], v));
++    return cast_int(ivalue(idx));
+   }
+   else {  /* constant not found; create a new entry */
+-    setnvalue(idx, cast_num(fs->nk));
++    setivalue(idx, fs->nk);
+     luaM_growvector(L, f->k, fs->nk, f->sizek, TValue,
+                     MAXARG_Bx, "constant table overflow");
+     while (oldsize < f->sizek) setnilvalue(&f->k[oldsize++]);
+@@ -261,6 +270,21 @@ int luaK_numberK (FuncState *fs, lua_Num
+ }
+ 
+ 
++int luaK_integerK (FuncState *fs, lua_Integer r) {
++  TValue o;
++  setivalue(&o, r);
++  return addk(fs, &o, &o);
++}
++
++
++#ifdef LNUM_COMPLEX
++static int luaK_imagK (FuncState *fs, lua_Number r) {
++  TValue o;
++  setnvalue_complex(&o, r*I);
++  return addk(fs, &o, &o);
++}
++#endif
++
+ static int boolK (FuncState *fs, int b) {
+   TValue o;
+   setbvalue(&o, b);
+@@ -359,6 +383,16 @@ static void discharge2reg (FuncState *fs
+       luaK_codeABx(fs, OP_LOADK, reg, luaK_numberK(fs, e->u.nval));
+       break;
+     }
++    case VKINT: {
++      luaK_codeABx(fs, OP_LOADK, reg, luaK_integerK(fs, e->u.ival));
++      break;
++    }
++#ifdef LNUM_COMPLEX
++    case VKNUM2: {
++      luaK_codeABx(fs, OP_LOADK, reg, luaK_imagK(fs, e->u.nval));
++      break;
++    }
++#endif
+     case VRELOCABLE: {
+       Instruction *pc = &getcode(fs, e);
+       SETARG_A(*pc, reg);
+@@ -444,6 +478,10 @@ void luaK_exp2val (FuncState *fs, expdes
+ int luaK_exp2RK (FuncState *fs, expdesc *e) {
+   luaK_exp2val(fs, e);
+   switch (e->k) {
++#ifdef LNUM_COMPLEX
++    case VKNUM2:
++#endif
++    case VKINT:
+     case VKNUM:
+     case VTRUE:
+     case VFALSE:
+@@ -451,6 +489,10 @@ int luaK_exp2RK (FuncState *fs, expdesc 
+       if (fs->nk <= MAXINDEXRK) {  /* constant fit in RK operand? */
+         e->u.s.info = (e->k == VNIL)  ? nilK(fs) :
+                       (e->k == VKNUM) ? luaK_numberK(fs, e->u.nval) :
++                      (e->k == VKINT) ? luaK_integerK(fs, e->u.ival) :
++#ifdef LNUM_COMPLEX
++                      (e->k == VKNUM2) ? luaK_imagK(fs, e->u.nval) :
++#endif
+                                         boolK(fs, (e->k == VTRUE));
+         e->k = VK;
+         return RKASK(e->u.s.info);
+@@ -540,7 +582,10 @@ void luaK_goiftrue (FuncState *fs, expde
+   int pc;  /* pc of last jump */
+   luaK_dischargevars(fs, e);
+   switch (e->k) {
+-    case VK: case VKNUM: case VTRUE: {
++#ifdef LNUM_COMPLEX
++    case VKNUM2:
++#endif
++    case VKINT: case VK: case VKNUM: case VTRUE: {
+       pc = NO_JUMP;  /* always true; do nothing */
+       break;
+     }
+@@ -590,7 +635,10 @@ static void codenot (FuncState *fs, expd
+       e->k = VTRUE;
+       break;
+     }
+-    case VK: case VKNUM: case VTRUE: {
++#ifdef LNUM_COMPLEX
++    case VKNUM2:
++#endif
++    case VKINT: case VK: case VKNUM: case VTRUE: {
+       e->k = VFALSE;
+       break;
+     }
+@@ -626,25 +674,70 @@ void luaK_indexed (FuncState *fs, expdes
+ 
+ static int constfolding (OpCode op, expdesc *e1, expdesc *e2) {
+   lua_Number v1, v2, r;
++  int vkres= VKNUM;
+   if (!isnumeral(e1) || !isnumeral(e2)) return 0;
+-  v1 = e1->u.nval;
+-  v2 = e2->u.nval;
++
++  /* real and imaginary parts don't mix. */
++#ifdef LNUM_COMPLEX
++  if (e1->k == VKNUM2) {
++    if ((op != OP_UNM) && (e2->k != VKNUM2)) return 0; 
++    vkres= VKNUM2; }
++  else if (e2->k == VKNUM2) { return 0; }
++#endif
++  if ((e1->k == VKINT) && (e2->k == VKINT)) {
++    lua_Integer i1= e1->u.ival, i2= e2->u.ival;
++    lua_Integer rr;
++    int done= 0;
++    /* Integer/integer calculations (may end up producing floating point) */
++    switch (op) {
++      case OP_ADD: done= try_addint( &rr, i1, i2 ); break;
++      case OP_SUB: done= try_subint( &rr, i1, i2 ); break;
++      case OP_MUL: done= try_mulint( &rr, i1, i2 ); break;
++      case OP_DIV: done= try_divint( &rr, i1, i2 ); break;
++      case OP_MOD: done= try_modint( &rr, i1, i2 ); break;
++      case OP_POW: done= try_powint( &rr, i1, i2 ); break;
++      case OP_UNM: done= try_unmint( &rr, i1 ); break;
++      default:     done= 0; break;
++    }
++    if (done) {
++      e1->u.ival = rr;  /* remained within integer range */
++      return 1;
++    }
++  }
++  v1 = (e1->k == VKINT) ? ((lua_Number)e1->u.ival) : e1->u.nval;
++  v2 = (e2->k == VKINT) ? ((lua_Number)e2->u.ival) : e2->u.nval;
++
+   switch (op) {
+     case OP_ADD: r = luai_numadd(v1, v2); break;
+     case OP_SUB: r = luai_numsub(v1, v2); break;
+-    case OP_MUL: r = luai_nummul(v1, v2); break;
++    case OP_MUL: 
++#ifdef LNUM_COMPLEX
++        if (vkres==VKNUM2) return 0;    /* leave to runtime (could do here, but not worth it?) */
++#endif
++        r = luai_nummul(v1, v2); break;
+     case OP_DIV:
+       if (v2 == 0) return 0;  /* do not attempt to divide by 0 */
+-      r = luai_numdiv(v1, v2); break;
++#ifdef LNUM_COMPLEX
++        if (vkres==VKNUM2) return 0;    /* leave to runtime */
++#endif
++        r = luai_numdiv(v1, v2); break;
+     case OP_MOD:
+       if (v2 == 0) return 0;  /* do not attempt to divide by 0 */
++#ifdef LNUM_COMPLEX
++      if (vkres==VKNUM2) return 0;    /* leave to runtime */
++#endif
+       r = luai_nummod(v1, v2); break;
+-    case OP_POW: r = luai_numpow(v1, v2); break;
++    case OP_POW: 
++#ifdef LNUM_COMPLEX
++      if (vkres==VKNUM2) return 0;    /* leave to runtime */
++#endif
++      r = luai_numpow(v1, v2); break;
+     case OP_UNM: r = luai_numunm(v1); break;
+     case OP_LEN: return 0;  /* no constant folding for 'len' */
+     default: lua_assert(0); r = 0; break;
+   }
+   if (luai_numisnan(r)) return 0;  /* do not attempt to produce NaN */
++  e1->k = cast(expkind,vkres);
+   e1->u.nval = r;
+   return 1;
+ }
+@@ -688,7 +781,8 @@ static void codecomp (FuncState *fs, OpC
+ 
+ void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e) {
+   expdesc e2;
+-  e2.t = e2.f = NO_JUMP; e2.k = VKNUM; e2.u.nval = 0;
++  e2.t = e2.f = NO_JUMP; e2.k = VKINT; e2.u.ival = 0;
++
+   switch (op) {
+     case OPR_MINUS: {
+       if (!isnumeral(e))
+--- a/src/lcode.h
++++ b/src/lcode.h
+@@ -71,6 +71,6 @@ LUAI_FUNC void luaK_prefix (FuncState *f
+ LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
+ LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, expdesc *v2);
+ LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
+-
++LUAI_FUNC int luaK_integerK (FuncState *fs, lua_Integer r);
+ 
+ #endif
+--- a/src/ldebug.c
++++ b/src/ldebug.c
+@@ -183,7 +183,7 @@ static void collectvalidlines (lua_State
+     int *lineinfo = f->l.p->lineinfo;
+     int i;
+     for (i=0; i<f->l.p->sizelineinfo; i++)
+-      setbvalue(luaH_setnum(L, t, lineinfo[i]), 1);
++      setbvalue(luaH_setint(L, t, lineinfo[i]), 1);
+     sethvalue(L, L->top, t); 
+   }
+   incr_top(L);
+@@ -566,7 +566,7 @@ static int isinstack (CallInfo *ci, cons
+ 
+ void luaG_typeerror (lua_State *L, const TValue *o, const char *op) {
+   const char *name = NULL;
+-  const char *t = luaT_typenames[ttype(o)];
++  const char *t = luaT_typenames[ttype_ext(o)];
+   const char *kind = (isinstack(L->ci, o)) ?
+                          getobjname(L, L->ci, cast_int(o - L->base), &name) :
+                          NULL;
+@@ -594,8 +594,8 @@ void luaG_aritherror (lua_State *L, cons
+ 
+ 
+ int luaG_ordererror (lua_State *L, const TValue *p1, const TValue *p2) {
+-  const char *t1 = luaT_typenames[ttype(p1)];
+-  const char *t2 = luaT_typenames[ttype(p2)];
++  const char *t1 = luaT_typenames[ttype_ext(p1)];
++  const char *t2 = luaT_typenames[ttype_ext(p2)];
+   if (t1[2] == t2[2])
+     luaG_runerror(L, "attempt to compare two %s values", t1);
+   else
+--- a/src/ldo.c
++++ b/src/ldo.c
+@@ -220,9 +220,9 @@ static StkId adjust_varargs (lua_State *
+     luaD_checkstack(L, p->maxstacksize);
+     htab = luaH_new(L, nvar, 1);  /* create `arg' table */
+     for (i=0; i<nvar; i++)  /* put extra arguments into `arg' table */
+-      setobj2n(L, luaH_setnum(L, htab, i+1), L->top - nvar + i);
++      setobj2n(L, luaH_setint(L, htab, i+1), L->top - nvar + i);
+     /* store counter in field `n' */
+-    setnvalue(luaH_setstr(L, htab, luaS_newliteral(L, "n")), cast_num(nvar));
++    setivalue(luaH_setstr(L, htab, luaS_newliteral(L, "n")), nvar);
+   }
+ #endif
+   /* move fixed parameters to final position */
+--- a/src/ldump.c
++++ b/src/ldump.c
+@@ -52,6 +52,11 @@ static void DumpNumber(lua_Number x, Dum
+  DumpVar(x,D);
+ }
+ 
++static void DumpInteger(lua_Integer x, DumpState* D)
++{
++ DumpVar(x,D);
++}
++
+ static void DumpVector(const void* b, int n, size_t size, DumpState* D)
+ {
+  DumpInt(n,D);
+@@ -93,8 +98,11 @@ static void DumpConstants(const Proto* f
+ 	DumpChar(bvalue(o),D);
+ 	break;
+    case LUA_TNUMBER:
+-	DumpNumber(nvalue(o),D);
++	DumpNumber(nvalue_fast(o),D);
+ 	break;
++   case LUA_TINT:
++	DumpInteger(ivalue(o),D);
++    break;
+    case LUA_TSTRING:
+ 	DumpString(rawtsvalue(o),D);
+ 	break;
+--- a/src/liolib.c
++++ b/src/liolib.c
+@@ -9,6 +9,7 @@
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
++#include <ctype.h>
+ 
+ #define liolib_c
+ #define LUA_LIB
+@@ -18,7 +19,8 @@
+ #include "lauxlib.h"
+ #include "lualib.h"
+ 
+-
++#include "lnum.h"
++#include "llex.h"
+ 
+ #define IO_INPUT	1
+ #define IO_OUTPUT	2
+@@ -269,6 +271,13 @@ static int io_lines (lua_State *L) {
+ ** =======================================================
+ */
+ 
++/*
++* Many problems if we intend the same 'n' format specifier (see 'file:read()')
++* to work for both FP and integer numbers, without losing their accuracy. So
++* we don't. 'n' reads numbers as floating points, 'i' as integers. Old code
++* remains valid, but won't provide full integer accuracy (this only matters
++* with float FP and/or 64-bit integers).
++*/
+ 
+ static int read_number (lua_State *L, FILE *f) {
+   lua_Number d;
+@@ -282,6 +291,43 @@ static int read_number (lua_State *L, FI
+   }
+ }
+ 
++static int read_integer (lua_State *L, FILE *f) {
++  lua_Integer i;
++  if (fscanf(f, LUA_INTEGER_SCAN, &i) == 1) {
++    lua_pushinteger(L, i);
++    return 1;
++  }
++  else return 0;  /* read fails */
++}
++
++#ifdef LNUM_COMPLEX
++static int read_complex (lua_State *L, FILE *f) {
++  /* NNN / NNNi / NNN+MMMi / NNN-MMMi */
++  lua_Number a,b;
++  if (fscanf(f, LUA_NUMBER_SCAN, &a) == 1) {
++    int c=fgetc(f);
++    switch(c) {
++        case 'i':
++            lua_pushcomplex(L, a*I);
++            return 1;
++        case '+':
++        case '-':
++            /* "i" is consumed if at the end; just 'NNN+MMM' will most likely
++             * behave as if "i" was there? (TBD: test)
++             */
++            if (fscanf(f, LUA_NUMBER_SCAN "i", &b) == 1) {
++                lua_pushcomplex(L, a+ (c=='+' ? b:-b)*I);
++                return 1;
++            }
++    }
++    ungetc( c,f );
++    lua_pushnumber(L,a);  /*real part only*/
++    return 1;
++  }
++  return 0;  /* read fails */
++}
++#endif
++
+ 
+ static int test_eof (lua_State *L, FILE *f) {
+   int c = getc(f);
+@@ -355,6 +401,14 @@ static int g_read (lua_State *L, FILE *f
+           case 'n':  /* number */
+             success = read_number(L, f);
+             break;
++          case 'i':  /* integer (full accuracy) */
++            success = read_integer(L, f);
++            break;
++#ifdef LNUM_COMPLEX
++          case 'c':  /* complex */
++            success = read_complex(L, f);
++            break;
++#endif
+           case 'l':  /* line */
+             success = read_line(L, f);
+             break;
+@@ -415,9 +469,10 @@ static int g_write (lua_State *L, FILE *
+   int status = 1;
+   for (; nargs--; arg++) {
+     if (lua_type(L, arg) == LUA_TNUMBER) {
+-      /* optimization: could be done exactly as for strings */
+-      status = status &&
+-          fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg)) > 0;
++      if (lua_isinteger(L,arg))
++          status = status && fprintf(f, LUA_INTEGER_FMT, lua_tointeger(L, arg)) > 0;
++      else
++          status = status && fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg)) > 0;
+     }
+     else {
+       size_t l;
+@@ -460,7 +515,7 @@ static int f_setvbuf (lua_State *L) {
+   static const char *const modenames[] = {"no", "full", "line", NULL};
+   FILE *f = tofile(L);
+   int op = luaL_checkoption(L, 2, NULL, modenames);
+-  lua_Integer sz = luaL_optinteger(L, 3, LUAL_BUFFERSIZE);
++  size_t sz = luaL_optint32(L, 3, LUAL_BUFFERSIZE);
+   int res = setvbuf(f, NULL, mode[op], sz);
+   return pushresult(L, res == 0, NULL);
+ }
+--- a/src/llex.c
++++ b/src/llex.c
+@@ -22,6 +22,7 @@
+ #include "lstring.h"
+ #include "ltable.h"
+ #include "lzio.h"
++#include "lnum.h"
+ 
+ 
+ 
+@@ -34,13 +35,17 @@
+ 
+ 
+ /* ORDER RESERVED */
+-const char *const luaX_tokens [] = {
++static const char *const luaX_tokens [] = {
+     "and", "break", "do", "else", "elseif",
+     "end", "false", "for", "function", "if",
+     "in", "local", "nil", "not", "or", "repeat",
+     "return", "then", "true", "until", "while",
+     "..", "...", "==", ">=", "<=", "~=",
+     "<number>", "<name>", "<string>", "<eof>",
++    "<integer>",
++#ifdef LNUM_COMPLEX
++    "<number2>",
++#endif
+     NULL
+ };
+ 
+@@ -90,7 +95,11 @@ static const char *txtToken (LexState *l
+   switch (token) {
+     case TK_NAME:
+     case TK_STRING:
++    case TK_INT:
+     case TK_NUMBER:
++#ifdef LNUM_COMPLEX
++    case TK_NUMBER2:
++#endif
+       save(ls, '\0');
+       return luaZ_buffer(ls->buff);
+     default:
+@@ -175,23 +184,27 @@ static void buffreplace (LexState *ls, c
+     if (p[n] == from) p[n] = to;
+ }
+ 
+-
+-static void trydecpoint (LexState *ls, SemInfo *seminfo) {
++/* TK_NUMBER (/ TK_NUMBER2) */
++static int trydecpoint (LexState *ls, SemInfo *seminfo) {
+   /* format error: try to update decimal point separator */
+   struct lconv *cv = localeconv();
+   char old = ls->decpoint;
++  int ret;
+   ls->decpoint = (cv ? cv->decimal_point[0] : '.');
+   buffreplace(ls, old, ls->decpoint);  /* try updated decimal separator */
+-  if (!luaO_str2d(luaZ_buffer(ls->buff), &seminfo->r)) {
++  ret= luaO_str2d(luaZ_buffer(ls->buff), &seminfo->r, NULL);
++  if (!ret) {
+     /* format error with correct decimal point: no more options */
+     buffreplace(ls, ls->decpoint, '.');  /* undo change (for error message) */
+     luaX_lexerror(ls, "malformed number", TK_NUMBER);
+   }
++  return ret;
+ }
+ 
+ 
+-/* LUA_NUMBER */
+-static void read_numeral (LexState *ls, SemInfo *seminfo) {
++/* TK_NUMBER / TK_INT (/TK_NUMBER2) */
++static int read_numeral (LexState *ls, SemInfo *seminfo) {
++  int ret;
+   lua_assert(isdigit(ls->current));
+   do {
+     save_and_next(ls);
+@@ -202,8 +215,9 @@ static void read_numeral (LexState *ls, 
+     save_and_next(ls);
+   save(ls, '\0');
+   buffreplace(ls, '.', ls->decpoint);  /* follow locale for decimal point */
+-  if (!luaO_str2d(luaZ_buffer(ls->buff), &seminfo->r))  /* format error? */
+-    trydecpoint(ls, seminfo); /* try to update decimal point separator */
++  ret= luaO_str2d(luaZ_buffer(ls->buff), &seminfo->r, &seminfo->i );
++  if (!ret) return trydecpoint(ls, seminfo); /* try to update decimal point separator */
++  return ret;
+ }
+ 
+ 
+@@ -331,6 +345,7 @@ static void read_string (LexState *ls, i
+ }
+ 
+ 
++/* char / TK_* */
+ static int llex (LexState *ls, SemInfo *seminfo) {
+   luaZ_resetbuffer(ls->buff);
+   for (;;) {
+@@ -402,8 +417,7 @@ static int llex (LexState *ls, SemInfo *
+         }
+         else if (!isdigit(ls->current)) return '.';
+         else {
+-          read_numeral(ls, seminfo);
+-          return TK_NUMBER;
++          return read_numeral(ls, seminfo);
+         }
+       }
+       case EOZ: {
+@@ -416,8 +430,7 @@ static int llex (LexState *ls, SemInfo *
+           continue;
+         }
+         else if (isdigit(ls->current)) {
+-          read_numeral(ls, seminfo);
+-          return TK_NUMBER;
++          return read_numeral(ls, seminfo);
+         }
+         else if (isalpha(ls->current) || ls->current == '_') {
+           /* identifier or reserved word */
+--- a/src/llex.h
++++ b/src/llex.h
+@@ -29,19 +29,22 @@ enum RESERVED {
+   TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
+   /* other terminal symbols */
+   TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, TK_NUMBER,
+-  TK_NAME, TK_STRING, TK_EOS
++  TK_NAME, TK_STRING, TK_EOS, TK_INT
++#ifdef LNUM_COMPLEX
++  , TK_NUMBER2   /* imaginary constants: Ni */ 
++#endif
+ };
+ 
+ /* number of reserved words */
+ #define NUM_RESERVED	(cast(int, TK_WHILE-FIRST_RESERVED+1))
+ 
+ 
+-/* array with token `names' */
+-LUAI_DATA const char *const luaX_tokens [];
+-
+-
++/* SemInfo is a local data structure of 'llex.c', used for carrying a string
++ * or a number. A separate token (TK_*) will tell, how to interpret the data.
++ */      
+ typedef union {
+   lua_Number r;
++  lua_Integer i;
+   TString *ts;
+ } SemInfo;  /* semantics information */
+ 
+--- a/src/llimits.h
++++ b/src/llimits.h
+@@ -49,6 +49,7 @@ typedef LUAI_USER_ALIGNMENT_T L_Umaxalig
+ 
+ /* result of a `usual argument conversion' over lua_Number */
+ typedef LUAI_UACNUMBER l_uacNumber;
++typedef LUAI_UACINTEGER l_uacInteger;
+ 
+ 
+ /* internal assertions for in-house debugging */
+@@ -80,7 +81,6 @@ typedef LUAI_UACNUMBER l_uacNumber;
+ #define cast_int(i)	cast(int, (i))
+ 
+ 
+-
+ /*
+ ** type for virtual-machine instructions
+ ** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
+--- a/src/lmathlib.c
++++ b/src/lmathlib.c
+@@ -4,7 +4,6 @@
+ ** See Copyright Notice in lua.h
+ */
+ 
+-
+ #include <stdlib.h>
+ #include <math.h>
+ 
+@@ -16,113 +15,210 @@
+ #include "lauxlib.h"
+ #include "lualib.h"
+ 
++/* 'luai_vectpow()' as a replacement for 'cpow()'. Defined in the header; we
++ * don't intrude the code libs internal functions.
++ */
++#ifdef LNUM_COMPLEX
++# include "lnum.h"    
++#endif
+ 
+ #undef PI
+-#define PI (3.14159265358979323846)
+-#define RADIANS_PER_DEGREE (PI/180.0)
+-
++#ifdef LNUM_FLOAT
++# define PI (3.14159265358979323846F)
++#elif defined(M_PI)
++# define PI M_PI
++#else
++# define PI (3.14159265358979323846264338327950288)
++#endif
++#define RADIANS_PER_DEGREE (PI/180)
+ 
++#undef HUGE
++#ifdef LNUM_FLOAT
++# define HUGE HUGE_VALF
++#elif defined(LNUM_LDOUBLE)
++# define HUGE HUGE_VALL
++#else
++# define HUGE HUGE_VAL
++#endif
+ 
+ static int math_abs (lua_State *L) {
+-  lua_pushnumber(L, fabs(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushnumber(L, _LF(cabs) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(fabs) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_sin (lua_State *L) {
+-  lua_pushnumber(L, sin(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(csin) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(sin) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_sinh (lua_State *L) {
+-  lua_pushnumber(L, sinh(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(csinh) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(sinh) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_cos (lua_State *L) {
+-  lua_pushnumber(L, cos(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(ccos) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(cos) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_cosh (lua_State *L) {
+-  lua_pushnumber(L, cosh(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(ccosh) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(cosh) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_tan (lua_State *L) {
+-  lua_pushnumber(L, tan(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(ctan) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(tan) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_tanh (lua_State *L) {
+-  lua_pushnumber(L, tanh(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(ctanh) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(tanh) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_asin (lua_State *L) {
+-  lua_pushnumber(L, asin(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(casin) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(asin) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_acos (lua_State *L) {
+-  lua_pushnumber(L, acos(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(cacos) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(acos) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_atan (lua_State *L) {
+-  lua_pushnumber(L, atan(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(catan) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(atan) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_atan2 (lua_State *L) {
+-  lua_pushnumber(L, atan2(luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
++  /* scalars only */
++  lua_pushnumber(L, _LF(atan2) (luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
+   return 1;
+ }
+ 
+ static int math_ceil (lua_State *L) {
+-  lua_pushnumber(L, ceil(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_Complex v= luaL_checkcomplex(L, 1);
++  lua_pushcomplex(L, _LF(ceil) (_LF(creal)(v)) + _LF(ceil) (_LF(cimag)(v))*I);
++#else
++  lua_pushnumber(L, _LF(ceil) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_floor (lua_State *L) {
+-  lua_pushnumber(L, floor(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_Complex v= luaL_checkcomplex(L, 1);
++  lua_pushcomplex(L, _LF(floor) (_LF(creal)(v)) + _LF(floor) (_LF(cimag)(v))*I);
++#else
++  lua_pushnumber(L, _LF(floor) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+-static int math_fmod (lua_State *L) {
+-  lua_pushnumber(L, fmod(luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
++static int math_fmod (lua_State *L) {  
++  /* scalars only */
++  lua_pushnumber(L, _LF(fmod) (luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
+   return 1;
+ }
+ 
+ static int math_modf (lua_State *L) {
+-  double ip;
+-  double fp = modf(luaL_checknumber(L, 1), &ip);
++  /* scalars only */
++  lua_Number ip;
++  lua_Number fp = _LF(modf) (luaL_checknumber(L, 1), &ip);
+   lua_pushnumber(L, ip);
+   lua_pushnumber(L, fp);
+   return 2;
+ }
+ 
+ static int math_sqrt (lua_State *L) {
+-  lua_pushnumber(L, sqrt(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(csqrt) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(sqrt) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_pow (lua_State *L) {
+-  lua_pushnumber(L, pow(luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
++#ifdef LNUM_COMPLEX
++  /* C99 'cpow' gives somewhat inaccurate results (i.e. (-1)^2 = -1+1.2246467991474e-16i). 
++  * 'luai_vectpow' smoothens such, reusing it is the reason we need to #include "lnum.h".
++  */
++  lua_pushcomplex(L, luai_vectpow(luaL_checkcomplex(L,1), luaL_checkcomplex(L,2)));
++#else
++  lua_pushnumber(L, _LF(pow) (luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
++#endif
+   return 1;
+ }
+ 
+ static int math_log (lua_State *L) {
+-  lua_pushnumber(L, log(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(clog) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(log) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_log10 (lua_State *L) {
+-  lua_pushnumber(L, log10(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  /* Not in standard <complex.h> , but easy to calculate: log_a(x) = log_b(x) / log_b(a) 
++  */
++  lua_pushcomplex(L, _LF(clog) (luaL_checkcomplex(L,1)) / _LF(log) (10));
++#else
++  lua_pushnumber(L, _LF(log10) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_exp (lua_State *L) {
+-  lua_pushnumber(L, exp(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(cexp) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(exp) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+@@ -138,19 +234,20 @@ static int math_rad (lua_State *L) {
+ 
+ static int math_frexp (lua_State *L) {
+   int e;
+-  lua_pushnumber(L, frexp(luaL_checknumber(L, 1), &e));
++  lua_pushnumber(L, _LF(frexp) (luaL_checknumber(L, 1), &e));
+   lua_pushinteger(L, e);
+   return 2;
+ }
+ 
+ static int math_ldexp (lua_State *L) {
+-  lua_pushnumber(L, ldexp(luaL_checknumber(L, 1), luaL_checkint(L, 2)));
++  lua_pushnumber(L, _LF(ldexp) (luaL_checknumber(L, 1), luaL_checkint(L, 2)));
+   return 1;
+ }
+ 
+ 
+ 
+ static int math_min (lua_State *L) {
++  /* scalars only */
+   int n = lua_gettop(L);  /* number of arguments */
+   lua_Number dmin = luaL_checknumber(L, 1);
+   int i;
+@@ -165,6 +262,7 @@ static int math_min (lua_State *L) {
+ 
+ 
+ static int math_max (lua_State *L) {
++  /* scalars only */
+   int n = lua_gettop(L);  /* number of arguments */
+   lua_Number dmax = luaL_checknumber(L, 1);
+   int i;
+@@ -182,25 +280,20 @@ static int math_random (lua_State *L) {
+   /* the `%' avoids the (rare) case of r==1, and is needed also because on
+      some systems (SunOS!) `rand()' may return a value larger than RAND_MAX */
+   lua_Number r = (lua_Number)(rand()%RAND_MAX) / (lua_Number)RAND_MAX;
+-  switch (lua_gettop(L)) {  /* check number of arguments */
+-    case 0: {  /* no arguments */
+-      lua_pushnumber(L, r);  /* Number between 0 and 1 */
+-      break;
+-    }
+-    case 1: {  /* only upper limit */
+-      int u = luaL_checkint(L, 1);
+-      luaL_argcheck(L, 1<=u, 1, "interval is empty");
+-      lua_pushnumber(L, floor(r*u)+1);  /* int between 1 and `u' */
+-      break;
+-    }
+-    case 2: {  /* lower and upper limits */
+-      int l = luaL_checkint(L, 1);
+-      int u = luaL_checkint(L, 2);
+-      luaL_argcheck(L, l<=u, 2, "interval is empty");
+-      lua_pushnumber(L, floor(r*(u-l+1))+l);  /* int between `l' and `u' */
+-      break;
+-    }
+-    default: return luaL_error(L, "wrong number of arguments");
++  int n= lua_gettop(L);  /* number of arguments */
++  if (n==0) {	/* no arguments: range [0,1) */
++    lua_pushnumber(L, r);
++  } else if (n<=2) {	/* int range [1,u] or [l,u] */
++    int l= n==1 ? 1 : luaL_checkint(L, 1);
++    int u = luaL_checkint(L, n);
++    int tmp;
++    lua_Number d;
++    luaL_argcheck(L, l<=u, n, "interval is empty");
++    d= _LF(floor)(r*(u-l+1));
++    lua_number2int(tmp,d);
++    lua_pushinteger(L, l+tmp);
++  } else {
++    return luaL_error(L, "wrong number of arguments");
+   }
+   return 1;
+ }
+@@ -211,6 +304,66 @@ static int math_randomseed (lua_State *L
+   return 0;
+ }
+ 
++/* 
++* Lua 5.1 does not have acosh, asinh, atanh for scalars (not ANSI C)
++*/
++#if __STDC_VERSION__ >= 199901L
++static int math_acosh (lua_State *L) {
++# ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(cacosh) (luaL_checkcomplex(L,1)));
++# else
++  lua_pushnumber(L, _LF(acosh) (luaL_checknumber(L,1)));
++# endif
++  return 1;
++}
++static int math_asinh (lua_State *L) {
++# ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(casinh) (luaL_checkcomplex(L,1)));
++# else
++  lua_pushnumber(L, _LF(asinh) (luaL_checknumber(L,1)));
++# endif
++  return 1;
++}
++static int math_atanh (lua_State *L) {
++# ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(catanh) (luaL_checkcomplex(L,1)));
++# else
++  lua_pushnumber(L, _LF(atanh) (luaL_checknumber(L,1)));
++# endif
++  return 1;
++}
++#endif
++
++/* 
++ * C99 complex functions, not covered above.
++*/
++#ifdef LNUM_COMPLEX
++static int math_arg (lua_State *L) {
++  lua_pushnumber(L, _LF(carg) (luaL_checkcomplex(L,1)));
++  return 1;
++}
++
++static int math_imag (lua_State *L) {
++  lua_pushnumber(L, _LF(cimag) (luaL_checkcomplex(L,1)));
++  return 1;
++}
++
++static int math_real (lua_State *L) {
++  lua_pushnumber(L, _LF(creal) (luaL_checkcomplex(L,1)));
++  return 1;
++}
++
++static int math_conj (lua_State *L) {
++  lua_pushcomplex(L, _LF(conj) (luaL_checkcomplex(L,1)));
++  return 1;
++}
++
++static int math_proj (lua_State *L) {
++  lua_pushcomplex(L, _LF(cproj) (luaL_checkcomplex(L,1)));
++  return 1;
++}
++#endif
++
+ 
+ static const luaL_Reg mathlib[] = {
+   {"abs",   math_abs},
+@@ -241,6 +394,18 @@ static const luaL_Reg mathlib[] = {
+   {"sqrt",  math_sqrt},
+   {"tanh",   math_tanh},
+   {"tan",   math_tan},
++#if __STDC_VERSION__ >= 199901L
++  {"acosh",  math_acosh},
++  {"asinh",  math_asinh},
++  {"atanh",  math_atanh},
++#endif
++#ifdef LNUM_COMPLEX
++  {"arg",   math_arg},
++  {"imag",  math_imag},
++  {"real",  math_real},
++  {"conj",  math_conj},
++  {"proj",  math_proj},
++#endif
+   {NULL, NULL}
+ };
+ 
+@@ -252,8 +417,10 @@ LUALIB_API int luaopen_math (lua_State *
+   luaL_register(L, LUA_MATHLIBNAME, mathlib);
+   lua_pushnumber(L, PI);
+   lua_setfield(L, -2, "pi");
+-  lua_pushnumber(L, HUGE_VAL);
++  lua_pushnumber(L, HUGE);
+   lua_setfield(L, -2, "huge");
++  lua_pushinteger(L, LUA_INTEGER_MAX );
++  lua_setfield(L, -2, "hugeint");
+ #if defined(LUA_COMPAT_MOD)
+   lua_getfield(L, -1, "fmod");
+   lua_setfield(L, -2, "mod");
+--- /dev/null
++++ b/src/lnum.c
+@@ -0,0 +1,312 @@
++/*
++** $Id: lnum.c,v ... $
++** Internal number model
++** See Copyright Notice in lua.h
++*/
++
++#include <stdlib.h>
++#include <math.h>
++#include <ctype.h>
++#include <string.h>
++#include <stdio.h>
++#include <errno.h>
++
++#define lnum_c
++#define LUA_CORE
++
++#include "lua.h"
++#include "llex.h"
++#include "lnum.h"
++
++/*
++** lua_real2str converts a (non-complex) number to a string.
++** lua_str2real converts a string to a (non-complex) number.
++*/
++#define lua_real2str(s,n)  sprintf((s), LUA_NUMBER_FMT, (n))
++
++/*
++* Note: Only 'strtod()' is part of ANSI C; others are C99 and
++* may need '--std=c99' compiler setting (at least on Ubuntu 7.10).
++* 
++* Visual C++ 2008 Express does not have 'strtof()', nor 'strtold()'.
++* References to '_strtold()' exist but don't compile. It seems best
++* to leave Windows users with DOUBLE only (or compile with MinGW).
++*
++* In practise, using '(long double)strtod' is a risky thing, since
++* it will cause accuracy loss in reading in numbers, and such losses
++* will pile up in later processing. Get a real 'strtold()' or don't
++* use that mode at all.
++*/
++#ifdef LNUM_DOUBLE
++# define lua_str2real	strtod
++#elif defined(LNUM_FLOAT)
++# define lua_str2real	strtof
++#elif defined(LNUM_LDOUBLE)
++# define lua_str2real	strtold
++#endif
++
++#define lua_integer2str(s,v) sprintf((s), LUA_INTEGER_FMT, (v))
++
++/* 's' is expected to be LUAI_MAXNUMBER2STR long (enough for any number)
++*/
++void luaO_num2buf( char *s, const TValue *o )
++{
++  lua_Number n;
++  lua_assert( ttisnumber(o) );
++
++  /* Reason to handle integers differently is not only speed, but accuracy as
++   * well. We want to make any integer tostring() without roundings, at all.
++   */
++  if (ttisint(o)) {
++    lua_integer2str( s, ivalue(o) );
++    return;
++  }
++  n= nvalue_fast(o);
++  lua_real2str(s, n);
++
++#ifdef LNUM_COMPLEX
++  lua_Number n2= nvalue_img_fast(o);
++  if (n2!=0) {   /* Postfix with +-Ni */
++      int re0= (n == 0);
++      char *s2= re0 ? s : strchr(s,'\0'); 
++      if ((!re0) && (n2>0)) *s2++= '+';
++      lua_real2str( s2, n2 );
++      strcat(s2,"i");
++  }
++#endif
++}
++
++/*
++* If a LUA_TNUMBER has integer value, give it.
++*/
++int /*bool*/ tt_integer_valued( const TValue *o, lua_Integer *ref ) {
++  lua_Number d;
++  lua_Integer i;
++
++  lua_assert( ttype(o)==LUA_TNUMBER );
++  lua_assert( ref );
++#ifdef LNUM_COMPLEX
++  if (nvalue_img_fast(o)!=0) return 0;
++#endif
++  d= nvalue_fast(o);
++  lua_number2integer(i, d);
++  if (cast_num(i) == d) {
++    *ref= i; return 1;
++  }
++  return 0;
++}
++
++/* 
++ * Lua 5.1.3 (using 'strtod()') allows 0x+hex but not 0+octal. This is good,
++ * and we should NOT use 'autobase' 0 with 'strtoul[l]()' for this reason.
++ *
++ * Lua 5.1.3 allows '0x...' numbers to overflow and lose precision; this is not
++ * good. On Visual C++ 2008, 'strtod()' does not even take them in. Better to
++ * require hex values to fit 'lua_Integer' or give an error that they don't?
++ *
++ * Full hex range (0 .. 0xff..ff) is stored as integers, not to lose any bits.
++ * Numerical value of 0xff..ff will be -1, if used in calculations.
++ * 
++ * Returns: TK_INT for a valid integer, '*endptr_ref' updated
++ *          TK_NUMBER for seemingly numeric, to be parsed as floating point
++ *          0 for bad characters, not a number (or '0x' out of range)
++ */
++static int luaO_str2i (const char *s, lua_Integer *res, char **endptr_ref) {
++  char *endptr;
++  /* 'v' gets ULONG_MAX on possible overflow (which is > LUA_INTEGER_MAX);
++   * we don't have to check 'errno' here.
++   */
++  unsigned LUA_INTEGER v= lua_str2ul(s, &endptr, 10);
++  if (endptr == s) return 0;  /* nothing numeric */
++  if (v==0 && *endptr=='x') {
++    errno= 0;   /* needs to be set, 'strtoul[l]' does not clear it */
++    v= lua_str2ul(endptr+1, &endptr, 16);  /* retry as hex, unsigned range */
++    if (errno==ERANGE) {   /* clamped to 0xff..ff */
++#if (defined(LNUM_INT32) && !defined(LNUM_FLOAT)) || defined(LNUM_LDOUBLE)
++      return TK_NUMBER; /* Allow to be read as floating point (has more integer range) */
++#else
++      return 0;  /* Reject the number */
++#endif
++    }
++  } else if ((v > LUA_INTEGER_MAX) || (*endptr && (!isspace(*endptr)))) {
++    return TK_NUMBER;	/* not in signed range, or has '.', 'e' etc. trailing */
++  }
++  *res= (lua_Integer)v;
++  *endptr_ref= endptr;
++  return TK_INT;
++}
++
++/* 0 / TK_NUMBER / TK_INT (/ TK_NUMBER2) */
++int luaO_str2d (const char *s, lua_Number *res_n, lua_Integer *res_i) {
++  char *endptr;
++  int ret= TK_NUMBER;
++  /* Check integers first, if caller is allowing. 
++   * If 'res2'==NULL, they're only looking for floating point. 
++   */
++  if (res_i) {
++    ret= luaO_str2i(s,res_i,&endptr);
++    if (ret==0) return 0;
++  }
++  if (ret==TK_NUMBER) {
++    lua_assert(res_n);
++    /* Note: Visual C++ 2008 Express 'strtod()' does not read in "0x..."
++     *       numbers; it will read '0' and spit 'x' as endptr.
++     *       This means hex constants not fitting in 'lua_Integer' won't 
++     *       be read in at all. What to do?
++     */
++    *res_n = lua_str2real(s, &endptr);
++    if (endptr == s) return 0;  /* conversion failed */
++    /* Visual C++ 2008 'strtod()' does not allow "0x..." input. */
++#if defined(_MSC_VER) && !defined(LNUM_FLOAT) && !defined(LNUM_INT64)
++    if (*res_n==0 && *endptr=='x') {
++      /* Hex constant too big for 'lua_Integer' but that could fit in 'lua_Number'
++       * integer bits 
++       */
++      unsigned __int64 v= _strtoui64( s, &endptr, 16 );
++      /* We just let > 64 bit values be clamped to _UI64_MAX (MSDN does not say 'errno'==ERANGE would be set) */
++      *res_n= cast_num(v);
++      if (*res_n != v) return 0;    /* Would have lost accuracy */
++    }
++#endif
++#ifdef LNUM_COMPLEX
++    if (*endptr == 'i') { endptr++; ret= TK_NUMBER2; }
++#endif
++  }
++  if (*endptr) {
++    while (isspace(cast(unsigned char, *endptr))) endptr++;
++    if (*endptr) return 0;  /* invalid trail */
++  }
++  return ret;
++}
++
++
++/* Functions for finding out, when integer operations remain in range
++ * (and doing them).
++ */
++int try_addint( lua_Integer *r, lua_Integer ib, lua_Integer ic ) {
++  lua_Integer v= ib+ic; /* may overflow */
++  if (ib>0 && ic>0)      { if (v < 0) return 0; /*overflow, use floats*/ }
++  else if (ib<0 && ic<0) { if (v >= 0) return 0; }
++  *r= v;
++  return 1;
++}
++
++int try_subint( lua_Integer *r, lua_Integer ib, lua_Integer ic ) {
++  lua_Integer v= ib-ic; /* may overflow */
++  if (ib>=0 && ic<0)     { if (v < 0) return 0; /*overflow, use floats*/ }
++  else if (ib<0 && ic>0) { if (v >= 0) return 0; }
++  *r= v;
++  return 1;
++}
++
++int try_mulint( lua_Integer *r, lua_Integer ib, lua_Integer ic ) {
++  if (ib!=LUA_INTEGER_MIN && ic!=LUA_INTEGER_MIN) {
++    lua_Integer b= luai_abs(ib), c= luai_abs(ic);
++    if ( (ib==0) || (LUA_INTEGER_MAX/b >= c) ) {
++      *r= ib*ic;  /* no overflow */
++      return 1;
++    }
++  } else if (ib==0 || ic==0) {
++    *r= 0; return 1;
++  }
++
++  /* Result can be LUA_INTEGER_MIN; if it is, calculating it using floating 
++   * point will not cause accuracy loss.
++   */
++  if ( luai_nummul( cast_num(ib), cast_num(ic) ) == LUA_INTEGER_MIN ) {
++    *r= LUA_INTEGER_MIN;
++    return 1;
++  }
++  return 0;
++}
++
++int try_divint( lua_Integer *r, lua_Integer ib, lua_Integer ic ) {
++  /* N/0: leave to float side, to give an error
++  */
++  if (ic==0) return 0;
++
++  /* N/LUA_INTEGER_MIN: always non-integer results, or 0 or +1
++  */
++  if (ic==LUA_INTEGER_MIN) {
++    if (ib==LUA_INTEGER_MIN) { *r=1; return 1; }
++    if (ib==0) { *r=0; return 1; }
++
++  /* LUA_INTEGER_MIN (-2^31|63)/N: calculate using float side (either the division 
++   *    causes non-integer results, or there is no accuracy loss in int->fp->int
++   *    conversions (N=2,4,8,..,256 and N=2^30,2^29,..2^23).
++   */
++  } else if (ib==LUA_INTEGER_MIN) {
++    lua_Number d= luai_numdiv( cast_num(LUA_INTEGER_MIN), cast_num(ic) );
++    lua_Integer i; lua_number2integer(i,d);
++    if (cast_num(i)==d) { *r= i; return 1; }
++  
++  } else {
++    /* Note: We _can_ use ANSI C mod here, even on negative values, since
++     *       we only test for == 0 (the sign would be implementation dependent).
++     */
++     if (ib%ic == 0) { *r= ib/ic; return 1; }
++  }
++
++  return 0;
++}
++
++int try_modint( lua_Integer *r, lua_Integer ib, lua_Integer ic ) {
++  if (ic!=0) {
++    /* ANSI C can be trusted when b%c==0, or when values are non-negative. 
++     * b - (floor(b/c) * c)
++     *   -->
++     * + +: b - (b/c) * c (b % c can be used)
++     * - -: b - (b/c) * c (b % c could work, but not defined by ANSI C)
++     * 0 -: b - (b/c) * c (=0, b % c could work, but not defined by ANSI C)
++     * - +: b - (b/c-1) * c (when b!=-c)
++     * + -: b - (b/c-1) * c (when b!=-c)
++     *
++     * o MIN%MIN ends up 0, via overflow in calcs but that does not matter.
++     * o MIN%MAX ends up MAX-1 (and other such numbers), also after overflow,
++     *   but that does not matter, results do.
++     */
++    lua_Integer v= ib % ic;
++    if ( v!=0 && (ib<0 || ic<0) ) {
++      v= ib - ((ib/ic) - ((ib<=0 && ic<0) ? 0:1)) * ic;
++    }      
++    /* Result should always have same sign as 2nd argument. (PIL2) */
++    lua_assert( (v<0) ? (ic<0) : (v>0) ? (ic>0) : 1 );
++    *r= v;
++    return 1;
++  }
++  return 0;  /* let float side return NaN */
++}
++
++int try_powint( lua_Integer *r, lua_Integer ib, lua_Integer ic ) {
++
++    /* In FLOAT/INT32 or FLOAT|DOUBLE/INT64 modes, calculating integer powers 
++     * via FP realm may lose accuracy (i.e. 7^11 = 1977326743, which fits int32
++     * but not 23-bit float mantissa). 
++     *
++     * The current solution is dumb, but it works and uses little code. Use of
++     * integer powers is not anticipated to be very frequent (apart from 2^x,
++     * which is separately optimized).
++     */
++  if (ib==0) *r=0;
++  else if (ic<0) return 0;  /* FP realm */
++  else if (ib==2 && ic < (int)sizeof(lua_Integer)*8-1) *r= ((lua_Integer)1)<<ic;   /* 1,2,4,...2^30 | 2^62 optimization */
++  else if (ic==0) *r=1;
++  else if (luai_abs(ib)==1) *r= (ic%2) ? ib:1;
++  else {
++    lua_Integer x= ib;
++    while( --ic ) {
++      if (!try_mulint( &x, x, ib ))
++        return 0; /* FP realm */
++    }
++    *r= x;
++  }
++  return 1;
++}
++
++int try_unmint( lua_Integer *r, lua_Integer ib ) {
++  /* Negating LUA_INTEGER_MIN leaves the range. */
++  if ( ib != LUA_INTEGER_MIN )  
++    { *r= -ib; return 1; }
++  return 0;
++}
++
+--- /dev/null
++++ b/src/lnum.h
+@@ -0,0 +1,116 @@
++/*
++** $Id: lnum.h,v ... $
++** Internal Number model
++** See Copyright Notice in lua.h
++*/
++
++#ifndef lnum_h
++#define lnum_h
++
++#include <math.h>
++
++#include "lobject.h"
++
++/*
++** The luai_num* macros define the primitive operations over 'lua_Number's
++** (not 'lua_Integer's, not 'lua_Complex').
++*/
++#define luai_numadd(a,b)	((a)+(b))
++#define luai_numsub(a,b)	((a)-(b))
++#define luai_nummul(a,b)	((a)*(b))
++#define luai_numdiv(a,b)	((a)/(b))
++#define luai_nummod(a,b)	((a) - _LF(floor)((a)/(b))*(b))
++#define luai_numpow(a,b)	(_LF(pow)(a,b))
++#define luai_numunm(a)		(-(a))
++#define luai_numeq(a,b)	    ((a)==(b))
++#define luai_numlt(a,b)	    ((a)<(b))
++#define luai_numle(a,b)	    ((a)<=(b))
++#define luai_numisnan(a)	(!luai_numeq((a), (a)))
++
++int try_addint( lua_Integer *r, lua_Integer ib, lua_Integer ic );
++int try_subint( lua_Integer *r, lua_Integer ib, lua_Integer ic );
++int try_mulint( lua_Integer *r, lua_Integer ib, lua_Integer ic );
++int try_divint( lua_Integer *r, lua_Integer ib, lua_Integer ic );
++int try_modint( lua_Integer *r, lua_Integer ib, lua_Integer ic );
++int try_powint( lua_Integer *r, lua_Integer ib, lua_Integer ic );
++int try_unmint( lua_Integer *r, lua_Integer ib );
++
++#ifdef LNUM_COMPLEX
++  static inline lua_Complex luai_vectunm( lua_Complex a ) { return -a; }
++  static inline lua_Complex luai_vectadd( lua_Complex a, lua_Complex b ) { return a+b; }
++  static inline lua_Complex luai_vectsub( lua_Complex a, lua_Complex b ) { return a-b; }
++  static inline lua_Complex luai_vectmul( lua_Complex a, lua_Complex b ) { return a*b; }
++  static inline lua_Complex luai_vectdiv( lua_Complex a, lua_Complex b ) { return a/b; }
++
++/* 
++ * C99 does not provide modulus for complex numbers. It most likely is not
++ * meaningful at all.
++ */
++
++/* 
++ * Complex power
++ *
++ * C99 'cpow' gives inaccurate results for many common cases s.a. (1i)^2 -> 
++ * -1+1.2246467991474e-16i (OS X 10.4, gcc 4.0.1 build 5367)
++ * 
++ * [(a+bi)^(c+di)] = (r^c) * exp(-d*t) * cos(c*t + d*ln(r)) +
++ *                 = (r^c) * exp(-d*t) * sin(c*t + d*ln(r)) *i
++ * r = sqrt(a^2+b^2), t = arctan( b/a )
++ * 
++ * Reference: <http://home.att.net/~srschmitt/complexnumbers.html>
++ * Could also be calculated using: x^y = exp(ln(x)*y)
++ *
++ * Note: Defined here (and not in .c) so 'lmathlib.c' can share the 
++ *       implementation.
++ */
++  static inline
++  lua_Complex luai_vectpow( lua_Complex a, lua_Complex b )
++  {
++# if 1
++    lua_Number ar= _LF(creal)(a), ai= _LF(cimag)(a);
++    lua_Number br= _LF(creal)(b), bi= _LF(cimag)(b);
++    
++    if (ai==0 && bi==0) {     /* a^c (real) */
++        return luai_numpow( ar, br );
++    } 
++
++    int br_int= (int)br;
++    
++    if ( ai!=0 && bi==0 && br_int==br && br_int!=0 && br_int!=INT_MIN ) { 
++        /* (a+bi)^N, N = { +-1,+-2, ... +-INT_MAX } 
++        */
++        lua_Number k= luai_numpow( _LF(sqrt) (ar*ar + ai*ai), br );
++        lua_Number cos_z, sin_z;
++
++        /* Situation depends upon c (N) in the following manner:
++         * 
++         * N%4==0                                => cos(c*t)=1, sin(c*t)=0
++         * (N*sign(b))%4==1 or (N*sign(b))%4==-3 => cos(c*t)=0, sin(c*t)=1
++         * N%4==2 or N%4==-2                     => cos(c*t)=-1, sin(c*t)=0
++         * (N*sign(b))%4==-1 or (N*sign(b))%4==3 => cos(c*t)=0, sin(c*t)=-1
++         */
++      int br_int_abs = br_int<0 ? -br_int:br_int;
++      
++      switch( (br_int_abs%4) * (br_int<0 ? -1:1) * (ai<0 ? -1:1) ) {
++        case 0:             cos_z=1, sin_z=0; break;
++        case 2: case -2:    cos_z=-1, sin_z=0; break;
++        case 1: case -3:    cos_z=0, sin_z=1; break;
++        case 3: case -1:    cos_z=0, sin_z=-1; break;
++        default:            lua_assert(0); return 0;
++      }
++      return k*cos_z + (k*sin_z)*I;
++    }
++# endif
++    return _LF(cpow) ( a, b );
++  }
++#endif
++
++LUAI_FUNC int luaO_str2d (const char *s, lua_Number *res1, lua_Integer *res2);
++LUAI_FUNC void luaO_num2buf( char *s, const TValue *o );
++
++LUAI_FUNC int /*bool*/ tt_integer_valued( const TValue *o, lua_Integer *ref );
++
++#define luai_normalize(o) \
++{ lua_Integer _i; if (tt_integer_valued(o,&_i)) setivalue(o,_i); }
++
++#endif
+--- /dev/null
++++ b/src/lnum_config.h
+@@ -0,0 +1,221 @@
++/*
++** $Id: lnum_config.h,v ... $
++** Internal Number model
++** See Copyright Notice in lua.h
++*/
++
++#ifndef lnum_config_h
++#define lnum_config_h
++
++/*
++** Default number modes
++*/
++#if (!defined LNUM_DOUBLE) && (!defined LNUM_FLOAT) && (!defined LNUM_LDOUBLE)
++# define LNUM_FLOAT
++#endif
++#if (!defined LNUM_INT16) && (!defined LNUM_INT32) && (!defined LNUM_INT64)
++# define LNUM_INT32
++#endif
++
++/*
++** Require C99 mode for COMPLEX, FLOAT and LDOUBLE (only DOUBLE is ANSI C).
++*/
++#if defined(LNUM_COMPLEX) && (__STDC_VERSION__ < 199901L)
++# error "Need C99 for complex (use '--std=c99' or similar)"
++#elif defined(LNUM_LDOUBLE) && (__STDC_VERSION__ < 199901L) && !defined(_MSC_VER)
++# error "Need C99 for 'long double' (use '--std=c99' or similar)"
++#elif defined(LNUM_FLOAT) && (__STDC_VERSION__ < 199901L)
++/* LNUM_FLOAT not supported on Windows */
++# error "Need C99 for 'float' (use '--std=c99' or similar)"
++#endif
++ 
++/*
++** Number mode identifier to accompany the version string.
++*/
++#ifdef LNUM_COMPLEX
++# define _LNUM1 "complex "
++#else
++# define _LNUM1 ""
++#endif
++#ifdef LNUM_DOUBLE
++# define _LNUM2 "double"
++#elif defined(LNUM_FLOAT)
++# define _LNUM2 "float"
++#elif defined(LNUM_LDOUBLE)
++# define _LNUM2 "ldouble"
++#endif
++#ifdef LNUM_INT32
++# define _LNUM3 "int32"
++#elif defined(LNUM_INT64)
++# define _LNUM3 "int64"
++#elif defined(LNUM_INT16)
++# define _LNUM3 "int16"
++#endif
++#define LUA_LNUM _LNUM1 _LNUM2 " " _LNUM3
++
++/*
++** LUA_NUMBER is the type of floating point number in Lua
++** LUA_NUMBER_SCAN is the format for reading numbers.
++** LUA_NUMBER_FMT is the format for writing numbers.
++*/
++#ifdef LNUM_FLOAT
++# define LUA_NUMBER         float
++# define LUA_NUMBER_SCAN    "%f"
++# define LUA_NUMBER_FMT     "%g"  
++#elif (defined LNUM_DOUBLE)
++# define LUA_NUMBER	        double
++# define LUA_NUMBER_SCAN    "%lf"
++# define LUA_NUMBER_FMT     "%.14g"
++#elif (defined LNUM_LDOUBLE)
++# define LUA_NUMBER         long double
++# define LUA_NUMBER_SCAN    "%Lg"
++# define LUA_NUMBER_FMT     "%.20Lg"
++#endif
++
++
++/* 
++** LUAI_MAXNUMBER2STR: size of a buffer fitting any number->string result.
++**
++**  double:  24 (sign, x.xxxxxxxxxxxxxxe+nnnn, and \0)
++**  int64:   21 (19 digits, sign, and \0)
++**  long double: 43 for 128-bit (sign, x.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxe+nnnn, and \0)
++**           30 for 80-bit (sign, x.xxxxxxxxxxxxxxxxxxxxe+nnnn, and \0)
++*/
++#ifdef LNUM_LDOUBLE
++# define _LUAI_MN2S 44
++#else
++# define _LUAI_MN2S 24
++#endif
++
++#ifdef LNUM_COMPLEX
++# define LUAI_MAXNUMBER2STR (2*_LUAI_MN2S)
++#else
++# define LUAI_MAXNUMBER2STR _LUAI_MN2S
++#endif
++
++/*
++** LUA_INTEGER is the integer type used by lua_pushinteger/lua_tointeger/lua_isinteger.
++** LUA_INTEGER_SCAN is the format for reading integers
++** LUA_INTEGER_FMT is the format for writing integers
++**
++** Note: Visual C++ 2005 does not have 'strtoull()', use '_strtoui64()' instead.
++*/
++#ifdef LNUM_INT32
++# if LUAI_BITSINT > 16
++#  define LUA_INTEGER   int
++#  define LUA_INTEGER_SCAN "%d"
++#  define LUA_INTEGER_FMT "%d"
++# else
++/* Note: 'LUA_INTEGER' being 'ptrdiff_t' (as in Lua 5.1) causes problems with
++ *       'printf()' operations. Also 'unsigned ptrdiff_t' is invalid.
++ */
++#  define LUA_INTEGER   long
++#  define LUA_INTEGER_SCAN "%ld"
++#  define LUA_INTEGER_FMT "%ld"
++# endif
++# define LUA_INTEGER_MAX 0x7FFFFFFF             /* 2^31-1 */
++/* */
++#elif defined(LNUM_INT64)
++# define LUA_INTEGER	long long
++# ifdef _MSC_VER
++#  define lua_str2ul    _strtoui64
++# else
++#  define lua_str2ul    strtoull
++# endif
++# define LUA_INTEGER_SCAN "%lld"
++# define LUA_INTEGER_FMT "%lld"
++# define LUA_INTEGER_MAX 0x7fffffffffffffffLL       /* 2^63-1 */ 
++# define LUA_INTEGER_MIN (-LUA_INTEGER_MAX - 1LL)   /* -2^63 */
++/* */
++#elif defined(LNUM_INT16)
++# if LUAI_BITSINT > 16
++#  define LUA_INTEGER    short
++#  define LUA_INTEGER_SCAN "%hd"
++#  define LUA_INTEGER_FMT "%hd"
++# else
++#  define LUA_INTEGER    int
++#  define LUA_INTEGER_SCAN "%d"
++#  define LUA_INTEGER_FMT "%d"
++# endif
++# define LUA_INTEGER_MAX 0x7FFF             /* 2^16-1 */
++#endif
++
++#ifndef lua_str2ul
++# define lua_str2ul (unsigned LUA_INTEGER)strtoul
++#endif
++#ifndef LUA_INTEGER_MIN
++# define LUA_INTEGER_MIN (-LUA_INTEGER_MAX -1)  /* -2^16|32 */
++#endif
++
++/*
++@@ lua_number2int is a macro to convert lua_Number to int.
++@@ lua_number2integer is a macro to convert lua_Number to lua_Integer.
++** CHANGE them if you know a faster way to convert a lua_Number to
++** int (with any rounding method and without throwing errors) in your
++** system. In Pentium machines, a naive typecast from double to int
++** in C is extremely slow, so any alternative is worth trying.
++*/
++
++/* On a Pentium, resort to a trick */
++#if defined(LNUM_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \
++    (defined(__i386) || defined (_M_IX86) || defined(__i386__))
++
++/* On a Microsoft compiler, use assembler */
++# if defined(_MSC_VER)
++#  define lua_number2int(i,d)   __asm fld d   __asm fistp i
++# else
++
++/* the next trick should work on any Pentium, but sometimes clashes
++   with a DirectX idiosyncrasy */
++union luai_Cast { double l_d; long l_l; };
++#  define lua_number2int(i,d) \
++  { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; }
++# endif
++
++# ifndef LNUM_INT64
++#  define lua_number2integer    lua_number2int
++# endif
++
++/* this option always works, but may be slow */
++#else
++# define lua_number2int(i,d)        ((i)=(int)(d))
++#endif
++
++/* Note: Some compilers (OS X gcc 4.0?) may choke on double->long long conversion 
++ *       since it can lose precision. Others do require 'long long' there.  
++ */
++#ifndef lua_number2integer
++# define lua_number2integer(i,d)    ((i)=(lua_Integer)(d))
++#endif
++
++/*
++** 'luai_abs()' to give absolute value of 'lua_Integer'
++*/
++#ifdef LNUM_INT32
++# define luai_abs abs
++#elif defined(LNUM_INT64) && (__STDC_VERSION__ >= 199901L)
++# define luai_abs llabs
++#else
++# define luai_abs(v) ((v) >= 0 ? (v) : -(v))
++#endif
++
++/*
++** LUAI_UACNUMBER is the result of an 'usual argument conversion' over a number.
++** LUAI_UACINTEGER the same, over an integer.
++*/
++#define LUAI_UACNUMBER	double
++#define LUAI_UACINTEGER long
++
++/* ANSI C only has math funcs for 'double. C99 required for float and long double
++ * variants.
++ */
++#ifdef LNUM_DOUBLE
++# define _LF(name) name
++#elif defined(LNUM_FLOAT)
++# define _LF(name) name ## f
++#elif defined(LNUM_LDOUBLE)
++# define _LF(name) name ## l
++#endif
++
++#endif
++
+--- a/src/lobject.c
++++ b/src/lobject.c
+@@ -21,7 +21,8 @@
+ #include "lstate.h"
+ #include "lstring.h"
+ #include "lvm.h"
+-
++#include "llex.h"
++#include "lnum.h"
+ 
+ 
+ const TValue luaO_nilobject_ = {{NULL}, LUA_TNIL};
+@@ -70,12 +71,31 @@ int luaO_log2 (unsigned int x) {
+ 
+ 
+ int luaO_rawequalObj (const TValue *t1, const TValue *t2) {
+-  if (ttype(t1) != ttype(t2)) return 0;
++  if (!ttype_ext_same(t1,t2)) return 0;
+   else switch (ttype(t1)) {
+     case LUA_TNIL:
+       return 1;
++    case LUA_TINT:
++      if (ttype(t2)==LUA_TINT)
++        return ivalue(t1) == ivalue(t2);
++      else {  /* t1:int, t2:num */
++#ifdef LNUM_COMPLEX
++        if (nvalue_img_fast(t2) != 0) return 0;
++#endif
++        /* Avoid doing accuracy losing cast, if possible. */
++        lua_Integer tmp;
++        if (tt_integer_valued(t2,&tmp)) 
++          return ivalue(t1) == tmp;
++        else
++          return luai_numeq( cast_num(ivalue(t1)), nvalue_fast(t2) );
++        }
+     case LUA_TNUMBER:
+-      return luai_numeq(nvalue(t1), nvalue(t2));
++        if (ttype(t2)==LUA_TINT)
++          return luaO_rawequalObj(t2, t1);  /* swap LUA_TINT to left */
++#ifdef LNUM_COMPLEX
++        if (!luai_numeq(nvalue_img_fast(t1), nvalue_img_fast(t2))) return 0;
++#endif
++        return luai_numeq(nvalue_fast(t1), nvalue_fast(t2));
+     case LUA_TBOOLEAN:
+       return bvalue(t1) == bvalue(t2);  /* boolean true must be 1 !! */
+     case LUA_TLIGHTUSERDATA:
+@@ -86,21 +106,6 @@ int luaO_rawequalObj (const TValue *t1, 
+   }
+ }
+ 
+-
+-int luaO_str2d (const char *s, lua_Number *result) {
+-  char *endptr;
+-  *result = lua_str2number(s, &endptr);
+-  if (endptr == s) return 0;  /* conversion failed */
+-  if (*endptr == 'x' || *endptr == 'X')  /* maybe an hexadecimal constant? */
+-    *result = cast_num(strtoul(s, &endptr, 16));
+-  if (*endptr == '\0') return 1;  /* most common case */
+-  while (isspace(cast(unsigned char, *endptr))) endptr++;
+-  if (*endptr != '\0') return 0;  /* invalid trailing characters? */
+-  return 1;
+-}
+-
+-
+-
+ static void pushstr (lua_State *L, const char *str) {
+   setsvalue2s(L, L->top, luaS_new(L, str));
+   incr_top(L);
+@@ -131,7 +136,11 @@ const char *luaO_pushvfstring (lua_State
+         break;
+       }
+       case 'd': {
+-        setnvalue(L->top, cast_num(va_arg(argp, int)));
++        /* This is tricky for 64-bit integers; maybe they even cannot be
++         * supported on all compilers; depends on the conversions applied to
++         * variable argument lists. TBD: test!
++         */
++        setivalue(L->top, (lua_Integer) va_arg(argp, l_uacInteger));
+         incr_top(L);
+         break;
+       }
+@@ -212,3 +221,4 @@ void luaO_chunkid (char *out, const char
+     }
+   }
+ }
++
+--- a/src/lobject.h
++++ b/src/lobject.h
+@@ -17,7 +17,11 @@
+ 
+ 
+ /* tags for values visible from Lua */
+-#define LAST_TAG	LUA_TTHREAD
++#if LUA_TINT > LUA_TTHREAD
++# define LAST_TAG   LUA_TINT
++#else
++# define LAST_TAG	LUA_TTHREAD
++#endif
+ 
+ #define NUM_TAGS	(LAST_TAG+1)
+ 
+@@ -59,7 +63,12 @@ typedef struct GCheader {
+ typedef union {
+   GCObject *gc;
+   void *p;
++#ifdef LNUM_COMPLEX
++  lua_Complex n;
++#else
+   lua_Number n;
++#endif
++  lua_Integer i;
+   int b;
+ } Value;
+ 
+@@ -77,7 +86,11 @@ typedef struct lua_TValue {
+ 
+ /* Macros to test type */
+ #define ttisnil(o)	(ttype(o) == LUA_TNIL)
+-#define ttisnumber(o)	(ttype(o) == LUA_TNUMBER)
++#define ttisint(o) (ttype(o) == LUA_TINT)
++#define ttisnumber(o) ((ttype(o) == LUA_TINT) || (ttype(o) == LUA_TNUMBER))
++#ifdef LNUM_COMPLEX
++# define ttiscomplex(o) ((ttype(o) == LUA_TNUMBER) && (nvalue_img_fast(o)!=0))
++#endif
+ #define ttisstring(o)	(ttype(o) == LUA_TSTRING)
+ #define ttistable(o)	(ttype(o) == LUA_TTABLE)
+ #define ttisfunction(o)	(ttype(o) == LUA_TFUNCTION)
+@@ -90,7 +103,25 @@ typedef struct lua_TValue {
+ #define ttype(o)	((o)->tt)
+ #define gcvalue(o)	check_exp(iscollectable(o), (o)->value.gc)
+ #define pvalue(o)	check_exp(ttislightuserdata(o), (o)->value.p)
+-#define nvalue(o)	check_exp(ttisnumber(o), (o)->value.n)
++
++#define ttype_ext(o) ( ttype(o) == LUA_TINT ? LUA_TNUMBER : ttype(o) )
++#define ttype_ext_same(o1,o2) ( (ttype(o1)==ttype(o2)) || (ttisnumber(o1) && ttisnumber(o2)) )
++
++/* '_fast' variants are for cases where 'ttype(o)' is known to be LUA_TNUMBER.
++ */
++#ifdef LNUM_COMPLEX
++#  define nvalue_complex_fast(o) check_exp( ttype(o)==LUA_TNUMBER, (o)->value.n )   
++#  define nvalue_fast(o)     ( _LF(creal) ( nvalue_complex_fast(o) ) )
++#  define nvalue_img_fast(o) ( _LF(cimag) ( nvalue_complex_fast(o) ) )
++#  define nvalue_complex(o) check_exp( ttisnumber(o), (ttype(o)==LUA_TINT) ? (o)->value.i : (o)->value.n )
++#  define nvalue_img(o) check_exp( ttisnumber(o), (ttype(o)==LUA_TINT) ? 0 : _LF(cimag)( (o)->value.n ) ) 
++#  define nvalue(o) check_exp( ttisnumber(o), (ttype(o)==LUA_TINT) ? cast_num((o)->value.i) : _LF(creal)((o)->value.n) ) 
++#else
++# define nvalue(o)	check_exp( ttisnumber(o), (ttype(o)==LUA_TINT) ? cast_num((o)->value.i) : (o)->value.n )
++# define nvalue_fast(o) check_exp( ttype(o)==LUA_TNUMBER, (o)->value.n )   
++#endif
++#define ivalue(o)	check_exp( ttype(o)==LUA_TINT, (o)->value.i )
++
+ #define rawtsvalue(o)	check_exp(ttisstring(o), &(o)->value.gc->ts)
+ #define tsvalue(o)	(&rawtsvalue(o)->tsv)
+ #define rawuvalue(o)	check_exp(ttisuserdata(o), &(o)->value.gc->u)
+@@ -116,8 +147,27 @@ typedef struct lua_TValue {
+ /* Macros to set values */
+ #define setnilvalue(obj) ((obj)->tt=LUA_TNIL)
+ 
+-#define setnvalue(obj,x) \
+-  { TValue *i_o=(obj); i_o->value.n=(x); i_o->tt=LUA_TNUMBER; }
++/* Must not have side effects, 'x' may be expression.
++*/
++#define setivalue(obj,x) \
++    { TValue *i_o=(obj); i_o->value.i=(x); i_o->tt=LUA_TINT; }
++
++# define setnvalue(obj,x) \
++    { TValue *i_o=(obj); i_o->value.n= (x); i_o->tt=LUA_TNUMBER; }
++
++/* Note: Complex always has "inline", both are C99.
++*/
++#ifdef LNUM_COMPLEX
++  static inline void setnvalue_complex_fast( TValue *obj, lua_Complex x ) {
++    lua_assert( _LF(cimag)(x) != 0 );
++    obj->value.n= x; obj->tt= LUA_TNUMBER;
++  }
++  static inline void setnvalue_complex( TValue *obj, lua_Complex x ) {
++    if (_LF(cimag)(x) == 0) { setnvalue(obj, _LF(creal)(x)); }
++    else { obj->value.n= x; obj->tt= LUA_TNUMBER; }
++  }
++#endif
++
+ 
+ #define setpvalue(obj,x) \
+   { TValue *i_o=(obj); i_o->value.p=(x); i_o->tt=LUA_TLIGHTUSERDATA; }
+@@ -155,9 +205,6 @@ typedef struct lua_TValue {
+     i_o->value.gc=cast(GCObject *, (x)); i_o->tt=LUA_TPROTO; \
+     checkliveness(G(L),i_o); }
+ 
+-
+-
+-
+ #define setobj(L,obj1,obj2) \
+   { const TValue *o2=(obj2); TValue *o1=(obj1); \
+     o1->value = o2->value; o1->tt=o2->tt; \
+@@ -185,8 +232,11 @@ typedef struct lua_TValue {
+ 
+ #define setttype(obj, tt) (ttype(obj) = (tt))
+ 
+-
+-#define iscollectable(o)	(ttype(o) >= LUA_TSTRING)
++#if LUA_TINT >= LUA_TSTRING
++# define iscollectable(o)	((ttype(o) >= LUA_TSTRING) && (ttype(o) != LUA_TINT))
++#else
++# define iscollectable(o)	(ttype(o) >= LUA_TSTRING)
++#endif
+ 
+ 
+ 
+@@ -370,12 +420,10 @@ LUAI_FUNC int luaO_log2 (unsigned int x)
+ LUAI_FUNC int luaO_int2fb (unsigned int x);
+ LUAI_FUNC int luaO_fb2int (int x);
+ LUAI_FUNC int luaO_rawequalObj (const TValue *t1, const TValue *t2);
+-LUAI_FUNC int luaO_str2d (const char *s, lua_Number *result);
+ LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt,
+                                                        va_list argp);
+ LUAI_FUNC const char *luaO_pushfstring (lua_State *L, const char *fmt, ...);
+ LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t len);
+ 
+-
+ #endif
+ 
+--- a/src/loslib.c
++++ b/src/loslib.c
+@@ -186,15 +186,30 @@ static int os_time (lua_State *L) {
+   }
+   if (t == (time_t)(-1))
+     lua_pushnil(L);
+-  else
+-    lua_pushnumber(L, (lua_Number)t);
++  else {
++     /* On float systems the pushed value must be an integer, NOT a number.
++      * Otherwise, accuracy is lost in the time_t->float conversion.
++      */
++#ifdef LNUM_FLOAT
++     lua_pushinteger(L, (lua_Integer) t);
++#else
++     lua_pushnumber(L, (lua_Number) t);
++#endif
++     }
+   return 1;
+ }
+ 
+ 
+ static int os_difftime (lua_State *L) {
++#ifdef LNUM_FLOAT
++  lua_Integer i= (lua_Integer)
++    difftime( (time_t)(luaL_checkinteger(L, 1)),
++              (time_t)(luaL_optinteger(L, 2, 0)));
++  lua_pushinteger(L, i);
++#else
+   lua_pushnumber(L, difftime((time_t)(luaL_checknumber(L, 1)),
+                              (time_t)(luaL_optnumber(L, 2, 0))));
++#endif
+   return 1;
+ }
+ 
+--- a/src/lparser.c
++++ b/src/lparser.c
+@@ -33,7 +33,6 @@
+ 
+ #define luaY_checklimit(fs,v,l,m)	if ((v)>(l)) errorlimit(fs,l,m)
+ 
+-
+ /*
+ ** nodes for block list (list of active blocks)
+ */
+@@ -72,7 +71,7 @@ static void errorlimit (FuncState *fs, i
+   const char *msg = (fs->f->linedefined == 0) ?
+     luaO_pushfstring(fs->L, "main function has more than %d %s", limit, what) :
+     luaO_pushfstring(fs->L, "function at line %d has more than %d %s",
+-                            fs->f->linedefined, limit, what);
++                            (fs->f->linedefined), limit, what);
+   luaX_lexerror(fs->ls, msg, 0);
+ }
+ 
+@@ -733,6 +732,18 @@ static void simpleexp (LexState *ls, exp
+       v->u.nval = ls->t.seminfo.r;
+       break;
+     }
++    case TK_INT: {
++      init_exp(v, VKINT, 0);
++      v->u.ival = ls->t.seminfo.i;
++      break;
++    }
++#ifdef LNUM_COMPLEX
++    case TK_NUMBER2: {
++      init_exp(v, VKNUM2, 0);
++      v->u.nval = ls->t.seminfo.r;
++      break;
++    }
++#endif
+     case TK_STRING: {
+       codestring(ls, v, ls->t.seminfo.ts);
+       break;
+@@ -1079,7 +1090,7 @@ static void fornum (LexState *ls, TStrin
+   if (testnext(ls, ','))
+     exp1(ls);  /* optional step */
+   else {  /* default step = 1 */
+-    luaK_codeABx(fs, OP_LOADK, fs->freereg, luaK_numberK(fs, 1));
++    luaK_codeABx(fs, OP_LOADK, fs->freereg, luaK_integerK(fs, 1));
+     luaK_reserveregs(fs, 1);
+   }
+   forbody(ls, base, line, 1, 1);
+--- a/src/lparser.h
++++ b/src/lparser.h
+@@ -31,7 +31,11 @@ typedef enum {
+   VRELOCABLE,	/* info = instruction pc */
+   VNONRELOC,	/* info = result register */
+   VCALL,	/* info = instruction pc */
+-  VVARARG	/* info = instruction pc */
++  VVARARG,	/* info = instruction pc */
++  VKINT     /* ival = integer value */
++#ifdef LNUM_COMPLEX
++  ,VKNUM2   /* nval = imaginary value */
++#endif
+ } expkind;
+ 
+ typedef struct expdesc {
+@@ -39,6 +43,7 @@ typedef struct expdesc {
+   union {
+     struct { int info, aux; } s;
+     lua_Number nval;
++    lua_Integer ival;
+   } u;
+   int t;  /* patch list of `exit when true' */
+   int f;  /* patch list of `exit when false' */
+--- a/src/lstrlib.c
++++ b/src/lstrlib.c
+@@ -43,8 +43,8 @@ static ptrdiff_t posrelat (ptrdiff_t pos
+ static int str_sub (lua_State *L) {
+   size_t l;
+   const char *s = luaL_checklstring(L, 1, &l);
+-  ptrdiff_t start = posrelat(luaL_checkinteger(L, 2), l);
+-  ptrdiff_t end = posrelat(luaL_optinteger(L, 3, -1), l);
++  ptrdiff_t start = posrelat(luaL_checkint32(L, 2), l);
++  ptrdiff_t end = posrelat(luaL_optint32(L, 3, -1), l);
+   if (start < 1) start = 1;
+   if (end > (ptrdiff_t)l) end = (ptrdiff_t)l;
+   if (start <= end)
+@@ -106,8 +106,8 @@ static int str_rep (lua_State *L) {
+ static int str_byte (lua_State *L) {
+   size_t l;
+   const char *s = luaL_checklstring(L, 1, &l);
+-  ptrdiff_t posi = posrelat(luaL_optinteger(L, 2, 1), l);
+-  ptrdiff_t pose = posrelat(luaL_optinteger(L, 3, posi), l);
++  ptrdiff_t posi = posrelat(luaL_optint32(L, 2, 1), l);
++  ptrdiff_t pose = posrelat(luaL_optint32(L, 3, posi), l);
+   int n, i;
+   if (posi <= 0) posi = 1;
+   if ((size_t)pose > l) pose = l;
+@@ -496,7 +496,7 @@ static int str_find_aux (lua_State *L, i
+   size_t l1, l2;
+   const char *s = luaL_checklstring(L, 1, &l1);
+   const char *p = luaL_checklstring(L, 2, &l2);
+-  ptrdiff_t init = posrelat(luaL_optinteger(L, 3, 1), l1) - 1;
++  ptrdiff_t init = posrelat(luaL_optint32(L, 3, 1), l1) - 1;
+   if (init < 0) init = 0;
+   else if ((size_t)(init) > l1) init = (ptrdiff_t)l1;
+   if (find && (lua_toboolean(L, 4) ||  /* explicit request? */
+@@ -690,7 +690,7 @@ static int str_gsub (lua_State *L) {
+ ** maximum size of each format specification (such as '%-099.99d')
+ ** (+10 accounts for %99.99x plus margin of error)
+ */
+-#define MAX_FORMAT	(sizeof(FLAGS) + sizeof(LUA_INTFRMLEN) + 10)
++#define MAX_FORMAT	(sizeof(FLAGS) + sizeof(LUA_INTEGER_FMT)-2 + 10)
+ 
+ 
+ static void addquoted (lua_State *L, luaL_Buffer *b, int arg) {
+@@ -747,9 +747,9 @@ static const char *scanformat (lua_State
+ static void addintlen (char *form) {
+   size_t l = strlen(form);
+   char spec = form[l - 1];
+-  strcpy(form + l - 1, LUA_INTFRMLEN);
+-  form[l + sizeof(LUA_INTFRMLEN) - 2] = spec;
+-  form[l + sizeof(LUA_INTFRMLEN) - 1] = '\0';
++  const char *tmp= LUA_INTEGER_FMT;   /* "%lld" or "%ld" */
++  strcpy(form + l - 1, tmp+1);
++  form[l + sizeof(LUA_INTEGER_FMT)-4] = spec;
+ }
+ 
+ 
+@@ -779,12 +779,12 @@ static int str_format (lua_State *L) {
+         }
+         case 'd':  case 'i': {
+           addintlen(form);
+-          sprintf(buff, form, (LUA_INTFRM_T)luaL_checknumber(L, arg));
++          sprintf(buff, form, luaL_checkinteger(L, arg));
+           break;
+         }
+         case 'o':  case 'u':  case 'x':  case 'X': {
+           addintlen(form);
+-          sprintf(buff, form, (unsigned LUA_INTFRM_T)luaL_checknumber(L, arg));
++          sprintf(buff, form, (unsigned LUA_INTEGER)luaL_checkinteger(L, arg));
+           break;
+         }
+         case 'e':  case 'E': case 'f':
+--- a/src/ltable.c
++++ b/src/ltable.c
+@@ -33,6 +33,7 @@
+ #include "lobject.h"
+ #include "lstate.h"
+ #include "ltable.h"
++#include "lnum.h"
+ 
+ 
+ /*
+@@ -51,25 +52,15 @@
+   
+ #define hashstr(t,str)  hashpow2(t, (str)->tsv.hash)
+ #define hashboolean(t,p)        hashpow2(t, p)
+-
++#define hashint(t,i)    hashpow2(t,i)
+ 
+ /*
+ ** for some types, it is better to avoid modulus by power of 2, as
+ ** they tend to have many 2 factors.
+ */
+ #define hashmod(t,n)	(gnode(t, ((n) % ((sizenode(t)-1)|1))))
+-
+-
+ #define hashpointer(t,p)	hashmod(t, IntPoint(p))
+ 
+-
+-/*
+-** number of ints inside a lua_Number
+-*/
+-#define numints		cast_int(sizeof(lua_Number)/sizeof(int))
+-
+-
+-
+ #define dummynode		(&dummynode_)
+ 
+ static const Node dummynode_ = {
+@@ -80,27 +71,46 @@ static const Node dummynode_ = {
+ 
+ /*
+ ** hash for lua_Numbers
++**
++** for non-complex modes, never called with 'lua_Integer' value range (s.a. 0)
+ */
+ static Node *hashnum (const Table *t, lua_Number n) {
+-  unsigned int a[numints];
+-  int i;
+-  if (luai_numeq(n, 0))  /* avoid problems with -0 */
+-    return gnode(t, 0);
+-  memcpy(a, &n, sizeof(a));
+-  for (i = 1; i < numints; i++) a[0] += a[i];
+-  return hashmod(t, a[0]);
++  const unsigned int *p= cast(const unsigned int *,&n);
++  unsigned int sum= *p;
++  unsigned int m= sizeof(lua_Number)/sizeof(int);
++  unsigned int i;
++  /* OS X Intel has 'm'==4 and gives "Bus error" if the last integer of 
++   * 'n' is read; the actual size of long double is only 80 bits = 10 bytes.
++   * Linux x86 has 'm'==3, and does not require reduction.
++   */
++#if defined(LNUM_LDOUBLE) && defined(__i386__)
++  if (m>3) m--;
++#endif
++  for (i = 1; i < m; i++) sum += p[i];
++  return hashmod(t, sum);
+ }
+ 
+ 
+-
+ /*
+ ** returns the `main' position of an element in a table (that is, the index
+ ** of its hash value)
++**
++** Floating point numbers with integer value give the hash position of the
++** integer (so they use the same table position).
+ */
+ static Node *mainposition (const Table *t, const TValue *key) {
++  lua_Integer i;
+   switch (ttype(key)) {
+     case LUA_TNUMBER:
+-      return hashnum(t, nvalue(key));
++      if (tt_integer_valued(key,&i)) 
++        return hashint(t, i);
++#ifdef LNUM_COMPLEX
++      if (nvalue_img_fast(key)!=0 && luai_numeq(nvalue_fast(key),0))
++        return gnode(t, 0);  /* 0 and -0 to give same hash */
++#endif
++      return hashnum(t, nvalue_fast(key));
++    case LUA_TINT:
++      return hashint(t, ivalue(key));
+     case LUA_TSTRING:
+       return hashstr(t, rawtsvalue(key));
+     case LUA_TBOOLEAN:
+@@ -116,16 +126,20 @@ static Node *mainposition (const Table *
+ /*
+ ** returns the index for `key' if `key' is an appropriate key to live in
+ ** the array part of the table, -1 otherwise.
++**
++** Anything <=0 is taken as not being in the array part.
+ */
+-static int arrayindex (const TValue *key) {
+-  if (ttisnumber(key)) {
+-    lua_Number n = nvalue(key);
+-    int k;
+-    lua_number2int(k, n);
+-    if (luai_numeq(cast_num(k), n))
+-      return k;
++static int arrayindex (const TValue *key, int max) {
++  lua_Integer k;
++  switch( ttype(key) ) {
++    case LUA_TINT:
++      k= ivalue(key); break;
++    case LUA_TNUMBER:
++      if (tt_integer_valued(key,&k)) break;
++    default:
++      return -1;  /* not to be used as array index */
+   }
+-  return -1;  /* `key' did not match some condition */
++  return ((k>0) && (k <= max)) ? cast_int(k) : -1;
+ }
+ 
+ 
+@@ -137,8 +151,8 @@ static int arrayindex (const TValue *key
+ static int findindex (lua_State *L, Table *t, StkId key) {
+   int i;
+   if (ttisnil(key)) return -1;  /* first iteration */
+-  i = arrayindex(key);
+-  if (0 < i && i <= t->sizearray)  /* is `key' inside array part? */
++  i = arrayindex(key, t->sizearray);
++  if (i>0)  /* inside array part? */
+     return i-1;  /* yes; that's the index (corrected to C) */
+   else {
+     Node *n = mainposition(t, key);
+@@ -163,7 +177,7 @@ int luaH_next (lua_State *L, Table *t, S
+   int i = findindex(L, t, key);  /* find original element */
+   for (i++; i < t->sizearray; i++) {  /* try first array part */
+     if (!ttisnil(&t->array[i])) {  /* a non-nil value? */
+-      setnvalue(key, cast_num(i+1));
++      setivalue(key, i+1);
+       setobj2s(L, key+1, &t->array[i]);
+       return 1;
+     }
+@@ -209,8 +223,8 @@ static int computesizes (int nums[], int
+ 
+ 
+ static int countint (const TValue *key, int *nums) {
+-  int k = arrayindex(key);
+-  if (0 < k && k <= MAXASIZE) {  /* is `key' an appropriate array index? */
++  int k = arrayindex(key,MAXASIZE);
++  if (k>0) {  /* appropriate array index? */
+     nums[ceillog2(k)]++;  /* count as such */
+     return 1;
+   }
+@@ -308,7 +322,7 @@ static void resize (lua_State *L, Table 
+     /* re-insert elements from vanishing slice */
+     for (i=nasize; i<oldasize; i++) {
+       if (!ttisnil(&t->array[i]))
+-        setobjt2t(L, luaH_setnum(L, t, i+1), &t->array[i]);
++        setobjt2t(L, luaH_setint(L, t, i+1), &t->array[i]);
+     }
+     /* shrink array */
+     luaM_reallocvector(L, t->array, oldasize, nasize, TValue);
+@@ -409,7 +423,9 @@ static TValue *newkey (lua_State *L, Tab
+     othern = mainposition(t, key2tval(mp));
+     if (othern != mp) {  /* is colliding node out of its main position? */
+       /* yes; move colliding node into free position */
+-      while (gnext(othern) != mp) othern = gnext(othern);  /* find previous */
++      while (gnext(othern) != mp) {
++        othern = gnext(othern);  /* find previous */
++      }
+       gnext(othern) = n;  /* redo the chain with `n' in place of `mp' */
+       *n = *mp;  /* copy colliding node into free pos. (mp->next also goes) */
+       gnext(mp) = NULL;  /* now `mp' is free */
+@@ -432,17 +448,18 @@ static TValue *newkey (lua_State *L, Tab
+ /*
+ ** search function for integers
+ */
+-const TValue *luaH_getnum (Table *t, int key) {
++const TValue *luaH_getint (Table *t, lua_Integer key) {
+   /* (1 <= key && key <= t->sizearray) */
+   if (cast(unsigned int, key-1) < cast(unsigned int, t->sizearray))
+     return &t->array[key-1];
+   else {
+-    lua_Number nk = cast_num(key);
+-    Node *n = hashnum(t, nk);
++    Node *n = hashint(t, key);
+     do {  /* check whether `key' is somewhere in the chain */
+-      if (ttisnumber(gkey(n)) && luai_numeq(nvalue(gkey(n)), nk))
++      if (ttisint(gkey(n)) && (ivalue(gkey(n)) == key)) {
+         return gval(n);  /* that's it */
+-      else n = gnext(n);
++      } else { 
++      n = gnext(n);
++    }
+     } while (n);
+     return luaO_nilobject;
+   }
+@@ -470,14 +487,12 @@ const TValue *luaH_get (Table *t, const 
+   switch (ttype(key)) {
+     case LUA_TNIL: return luaO_nilobject;
+     case LUA_TSTRING: return luaH_getstr(t, rawtsvalue(key));
++    case LUA_TINT: return luaH_getint(t, ivalue(key));
+     case LUA_TNUMBER: {
+-      int k;
+-      lua_Number n = nvalue(key);
+-      lua_number2int(k, n);
+-      if (luai_numeq(cast_num(k), nvalue(key))) /* index is int? */
+-        return luaH_getnum(t, k);  /* use specialized version */
+-      /* else go through */
+-    }
++      lua_Integer i;
++      if (tt_integer_valued(key,&i))
++        return luaH_getint(t,i);
++    } /* pass through */
+     default: {
+       Node *n = mainposition(t, key);
+       do {  /* check whether `key' is somewhere in the chain */
+@@ -498,20 +513,25 @@ TValue *luaH_set (lua_State *L, Table *t
+     return cast(TValue *, p);
+   else {
+     if (ttisnil(key)) luaG_runerror(L, "table index is nil");
+-    else if (ttisnumber(key) && luai_numisnan(nvalue(key)))
+-      luaG_runerror(L, "table index is NaN");
++    else if (ttype(key)==LUA_TNUMBER) {
++      lua_Integer k;
++      if (luai_numisnan(nvalue_fast(key)))
++        luaG_runerror(L, "table index is NaN");
++      if (tt_integer_valued(key,&k))
++        return luaH_setint(L, t, k);
++    }
+     return newkey(L, t, key);
+   }
+ }
+ 
+ 
+-TValue *luaH_setnum (lua_State *L, Table *t, int key) {
+-  const TValue *p = luaH_getnum(t, key);
++TValue *luaH_setint (lua_State *L, Table *t, lua_Integer key) {
++  const TValue *p = luaH_getint(t, key);
+   if (p != luaO_nilobject)
+     return cast(TValue *, p);
+   else {
+     TValue k;
+-    setnvalue(&k, cast_num(key));
++    setivalue(&k, key);
+     return newkey(L, t, &k);
+   }
+ }
+@@ -533,20 +553,21 @@ static int unbound_search (Table *t, uns
+   unsigned int i = j;  /* i is zero or a present index */
+   j++;
+   /* find `i' and `j' such that i is present and j is not */
+-  while (!ttisnil(luaH_getnum(t, j))) {
++  while (!ttisnil(luaH_getint(t, j))) {
+     i = j;
+     j *= 2;
+     if (j > cast(unsigned int, MAX_INT)) {  /* overflow? */
+       /* table was built with bad purposes: resort to linear search */
+-      i = 1;
+-      while (!ttisnil(luaH_getnum(t, i))) i++;
+-      return i - 1;
++      for( i = 1; i<MAX_INT+1; i++ ) {
++        if (ttisnil(luaH_getint(t, i))) break;
++      }
++      return i - 1;  /* up to MAX_INT */
+     }
+   }
+   /* now do a binary search between them */
+   while (j - i > 1) {
+     unsigned int m = (i+j)/2;
+-    if (ttisnil(luaH_getnum(t, m))) j = m;
++    if (ttisnil(luaH_getint(t, m))) j = m;
+     else i = m;
+   }
+   return i;
+--- a/src/ltable.h
++++ b/src/ltable.h
+@@ -18,8 +18,8 @@
+ #define key2tval(n)	(&(n)->i_key.tvk)
+ 
+ 
+-LUAI_FUNC const TValue *luaH_getnum (Table *t, int key);
+-LUAI_FUNC TValue *luaH_setnum (lua_State *L, Table *t, int key);
++LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key);
++LUAI_FUNC TValue *luaH_setint (lua_State *L, Table *t, lua_Integer key);
+ LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key);
+ LUAI_FUNC TValue *luaH_setstr (lua_State *L, Table *t, TString *key);
+ LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key);
+--- a/src/ltm.c
++++ b/src/ltm.c
+@@ -19,7 +19,6 @@
+ #include "ltm.h"
+ 
+ 
+-
+ const char *const luaT_typenames[] = {
+   "nil", "boolean", "userdata", "number",
+   "string", "table", "function", "userdata", "thread",
+@@ -67,6 +66,9 @@ const TValue *luaT_gettmbyobj (lua_State
+     case LUA_TUSERDATA:
+       mt = uvalue(o)->metatable;
+       break;
++    case LUA_TINT:
++      mt = G(L)->mt[LUA_TNUMBER];
++      break;
+     default:
+       mt = G(L)->mt[ttype(o)];
+   }
+--- a/src/lua.c
++++ b/src/lua.c
+@@ -16,7 +16,7 @@
+ 
+ #include "lauxlib.h"
+ #include "lualib.h"
+-
++#include "llimits.h"
+ 
+ 
+ static lua_State *globalL = NULL;
+@@ -382,6 +382,15 @@ int main (int argc, char **argv) {
+     l_message(argv[0], "cannot create state: not enough memory");
+     return EXIT_FAILURE;
+   }
++  /* Checking 'sizeof(lua_Integer)' cannot be made in preprocessor on all compilers.
++  */
++#ifdef LNUM_INT16
++  lua_assert( sizeof(lua_Integer) == 2 );
++#elif defined(LNUM_INT32)
++  lua_assert( sizeof(lua_Integer) == 4 );
++#elif defined(LNUM_INT64)
++  lua_assert( sizeof(lua_Integer) == 8 );
++#endif
+   s.argc = argc;
+   s.argv = argv;
+   status = lua_cpcall(L, &pmain, &s);
+--- a/src/lua.h
++++ b/src/lua.h
+@@ -19,7 +19,7 @@
+ #define LUA_VERSION	"Lua 5.1"
+ #define LUA_RELEASE	"Lua 5.1.5"
+ #define LUA_VERSION_NUM	501
+-#define LUA_COPYRIGHT	"Copyright (C) 1994-2012 Lua.org, PUC-Rio"
++#define LUA_COPYRIGHT	"Copyright (C) 1994-2012 Lua.org, PUC-Rio" " (" LUA_LNUM ")"
+ #define LUA_AUTHORS 	"R. Ierusalimschy, L. H. de Figueiredo & W. Celes"
+ 
+ 
+@@ -71,6 +71,16 @@ typedef void * (*lua_Alloc) (void *ud, v
+ */
+ #define LUA_TNONE		(-1)
+ 
++/* LUA_TINT is an internal type, not visible to applications. There are three
++ * potential values where it can be tweaked to (code autoadjusts to these):
++ *
++ * -2: not 'usual' type value; good since 'LUA_TINT' is not part of the API
++ * LUA_TNUMBER+1: shifts other type values upwards, breaking binary compatibility
++ *     not acceptable for 5.1, maybe 5.2 onwards?
++ *  9: greater than existing (5.1) type values.
++*/
++#define LUA_TINT (-2)
++
+ #define LUA_TNIL		0
+ #define LUA_TBOOLEAN		1
+ #define LUA_TLIGHTUSERDATA	2
+@@ -139,6 +149,8 @@ LUA_API int             (lua_isuserdata)
+ LUA_API int             (lua_type) (lua_State *L, int idx);
+ LUA_API const char     *(lua_typename) (lua_State *L, int tp);
+ 
++LUA_API int             (lua_isinteger) (lua_State *L, int idx);
++
+ LUA_API int            (lua_equal) (lua_State *L, int idx1, int idx2);
+ LUA_API int            (lua_rawequal) (lua_State *L, int idx1, int idx2);
+ LUA_API int            (lua_lessthan) (lua_State *L, int idx1, int idx2);
+@@ -244,6 +256,19 @@ LUA_API lua_Alloc (lua_getallocf) (lua_S
+ LUA_API void lua_setallocf (lua_State *L, lua_Alloc f, void *ud);
+ 
+ 
++/*
++* It is unnecessary to break Lua C API 'lua_tonumber()' compatibility, just
++* because the Lua number type is complex. Most C modules would use scalars
++* only. We'll introduce new 'lua_tocomplex' and 'lua_pushcomplex' for when
++* the module really wants to use them.
++*/
++#ifdef LNUM_COMPLEX
++  #include <complex.h>
++  typedef LUA_NUMBER complex lua_Complex;
++  LUA_API lua_Complex (lua_tocomplex) (lua_State *L, int idx);
++  LUA_API void (lua_pushcomplex) (lua_State *L, lua_Complex v);
++#endif
++
+ 
+ /* 
+ ** ===============================================================
+@@ -268,7 +293,12 @@ LUA_API void lua_setallocf (lua_State *L
+ #define lua_isboolean(L,n)	(lua_type(L, (n)) == LUA_TBOOLEAN)
+ #define lua_isthread(L,n)	(lua_type(L, (n)) == LUA_TTHREAD)
+ #define lua_isnone(L,n)		(lua_type(L, (n)) == LUA_TNONE)
+-#define lua_isnoneornil(L, n)	(lua_type(L, (n)) <= 0)
++
++#if LUA_TINT < 0
++# define lua_isnoneornil(L, n)	( (lua_type(L,(n)) <= 0) && (lua_type(L,(n)) != LUA_TINT) )
++#else
++# define lua_isnoneornil(L, n)	(lua_type(L, (n)) <= 0)
++#endif
+ 
+ #define lua_pushliteral(L, s)	\
+ 	lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1)
+@@ -386,3 +416,4 @@ struct lua_Debug {
+ 
+ 
+ #endif
++
+--- a/src/luaconf.h
++++ b/src/luaconf.h
+@@ -10,7 +10,9 @@
+ 
+ #include <limits.h>
+ #include <stddef.h>
+-
++#ifdef lua_assert
++# include <assert.h>
++#endif
+ 
+ /*
+ ** ==================================================================
+@@ -136,14 +138,38 @@
+ 
+ 
+ /*
+-@@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.
+-** CHANGE that if ptrdiff_t is not adequate on your machine. (On most
+-** machines, ptrdiff_t gives a good choice between int or long.)
++@@ LUAI_BITSINT defines the number of bits in an int.
++** CHANGE here if Lua cannot automatically detect the number of bits of
++** your machine. Probably you do not need to change this.
+ */
+-#define LUA_INTEGER	ptrdiff_t
++/* avoid overflows in comparison */
++#if INT_MAX-20 < 32760
++#define LUAI_BITSINT	16
++#elif INT_MAX > 2147483640L
++/* int has at least 32 bits */
++#define LUAI_BITSINT	32
++#else
++#error "you must define LUA_BITSINT with number of bits in an integer"
++#endif
+ 
+ 
+ /*
++@@ LNUM_DOUBLE | LNUM_FLOAT | LNUM_LDOUBLE: Generic Lua number mode
++@@ LNUM_INT32 | LNUM_INT64: Integer type
++@@ LNUM_COMPLEX: Define for using 'a+bi' numbers
++@@
++@@ You can combine LNUM_xxx but only one of each group. I.e. '-DLNUM_FLOAT
++@@ -DLNUM_INT32 -DLNUM_COMPLEX' gives float range complex numbers, with 
++@@ 32-bit scalar integer range optimized.
++**
++** These are kept in a separate configuration file mainly for ease of patching
++** (can be changed if integerated to Lua proper).
++*/
++/*#define LNUM_DOUBLE*/
++/*#define LNUM_INT32*/
++#include "lnum_config.h"
++
++/*
+ @@ LUA_API is a mark for all core API functions.
+ @@ LUALIB_API is a mark for all standard library functions.
+ ** CHANGE them if you need to define those functions in some special way.
+@@ -383,22 +409,6 @@
+ 
+ 
+ /*
+-@@ LUAI_BITSINT defines the number of bits in an int.
+-** CHANGE here if Lua cannot automatically detect the number of bits of
+-** your machine. Probably you do not need to change this.
+-*/
+-/* avoid overflows in comparison */
+-#if INT_MAX-20 < 32760
+-#define LUAI_BITSINT	16
+-#elif INT_MAX > 2147483640L
+-/* int has at least 32 bits */
+-#define LUAI_BITSINT	32
+-#else
+-#error "you must define LUA_BITSINT with number of bits in an integer"
+-#endif
+-
+-
+-/*
+ @@ LUAI_UINT32 is an unsigned integer with at least 32 bits.
+ @@ LUAI_INT32 is an signed integer with at least 32 bits.
+ @@ LUAI_UMEM is an unsigned integer big enough to count the total
+@@ -425,6 +435,15 @@
+ #define LUAI_MEM	long
+ #endif
+ 
++/*
++@@ LUAI_BOOL carries 0 and nonzero (normally 1). It may be defined as 'char'
++** (to save memory), 'int' (for speed), 'bool' (for C++) or '_Bool' (C99)
++*/
++#ifdef __cplusplus
++# define LUAI_BOOL bool
++#else
++# define LUAI_BOOL int
++#endif
+ 
+ /*
+ @@ LUAI_MAXCALLS limits the number of nested calls.
+@@ -490,101 +509,6 @@
+ /* }================================================================== */
+ 
+ 
+-
+-
+-/*
+-** {==================================================================
+-@@ LUA_NUMBER is the type of numbers in Lua.
+-** CHANGE the following definitions only if you want to build Lua
+-** with a number type different from double. You may also need to
+-** change lua_number2int & lua_number2integer.
+-** ===================================================================
+-*/
+-
+-#define LUA_NUMBER_DOUBLE
+-#define LUA_NUMBER	double
+-
+-/*
+-@@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
+-@* over a number.
+-*/
+-#define LUAI_UACNUMBER	double
+-
+-
+-/*
+-@@ LUA_NUMBER_SCAN is the format for reading numbers.
+-@@ LUA_NUMBER_FMT is the format for writing numbers.
+-@@ lua_number2str converts a number to a string.
+-@@ LUAI_MAXNUMBER2STR is maximum size of previous conversion.
+-@@ lua_str2number converts a string to a number.
+-*/
+-#define LUA_NUMBER_SCAN		"%lf"
+-#define LUA_NUMBER_FMT		"%.14g"
+-#define lua_number2str(s,n)	sprintf((s), LUA_NUMBER_FMT, (n))
+-#define LUAI_MAXNUMBER2STR	32 /* 16 digits, sign, point, and \0 */
+-#define lua_str2number(s,p)	strtod((s), (p))
+-
+-
+-/*
+-@@ The luai_num* macros define the primitive operations over numbers.
+-*/
+-#if defined(LUA_CORE)
+-#include <math.h>
+-#define luai_numadd(a,b)	((a)+(b))
+-#define luai_numsub(a,b)	((a)-(b))
+-#define luai_nummul(a,b)	((a)*(b))
+-#define luai_numdiv(a,b)	((a)/(b))
+-#define luai_nummod(a,b)	((a) - floor((a)/(b))*(b))
+-#define luai_numpow(a,b)	(pow(a,b))
+-#define luai_numunm(a)		(-(a))
+-#define luai_numeq(a,b)		((a)==(b))
+-#define luai_numlt(a,b)		((a)<(b))
+-#define luai_numle(a,b)		((a)<=(b))
+-#define luai_numisnan(a)	(!luai_numeq((a), (a)))
+-#endif
+-
+-
+-/*
+-@@ lua_number2int is a macro to convert lua_Number to int.
+-@@ lua_number2integer is a macro to convert lua_Number to lua_Integer.
+-** CHANGE them if you know a faster way to convert a lua_Number to
+-** int (with any rounding method and without throwing errors) in your
+-** system. In Pentium machines, a naive typecast from double to int
+-** in C is extremely slow, so any alternative is worth trying.
+-*/
+-
+-/* On a Pentium, resort to a trick */
+-#if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \
+-    (defined(__i386) || defined (_M_IX86) || defined(__i386__))
+-
+-/* On a Microsoft compiler, use assembler */
+-#if defined(_MSC_VER)
+-
+-#define lua_number2int(i,d)   __asm fld d   __asm fistp i
+-#define lua_number2integer(i,n)		lua_number2int(i, n)
+-
+-/* the next trick should work on any Pentium, but sometimes clashes
+-   with a DirectX idiosyncrasy */
+-#else
+-
+-union luai_Cast { double l_d; long l_l; };
+-#define lua_number2int(i,d) \
+-  { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; }
+-#define lua_number2integer(i,n)		lua_number2int(i, n)
+-
+-#endif
+-
+-
+-/* this option always works, but may be slow */
+-#else
+-#define lua_number2int(i,d)	((i)=(int)(d))
+-#define lua_number2integer(i,d)	((i)=(lua_Integer)(d))
+-
+-#endif
+-
+-/* }================================================================== */
+-
+-
+ /*
+ @@ LUAI_USER_ALIGNMENT_T is a type that requires maximum alignment.
+ ** CHANGE it if your system requires alignments larger than double. (For
+@@ -728,28 +652,6 @@ union luai_Cast { double l_d; long l_l; 
+ #define luai_userstateyield(L,n)	((void)L)
+ 
+ 
+-/*
+-@@ LUA_INTFRMLEN is the length modifier for integer conversions
+-@* in 'string.format'.
+-@@ LUA_INTFRM_T is the integer type correspoding to the previous length
+-@* modifier.
+-** CHANGE them if your system supports long long or does not support long.
+-*/
+-
+-#if defined(LUA_USELONGLONG)
+-
+-#define LUA_INTFRMLEN		"ll"
+-#define LUA_INTFRM_T		long long
+-
+-#else
+-
+-#define LUA_INTFRMLEN		"l"
+-#define LUA_INTFRM_T		long
+-
+-#endif
+-
+-
+-
+ /* =================================================================== */
+ 
+ /*
+--- a/src/lundump.c
++++ b/src/lundump.c
+@@ -73,6 +73,13 @@ static lua_Number LoadNumber(LoadState* 
+  return x;
+ }
+ 
++static lua_Integer LoadInteger(LoadState* S)
++{
++ lua_Integer x;
++ LoadVar(S,x);
++ return x;
++}
++
+ static TString* LoadString(LoadState* S)
+ {
+  size_t size;
+@@ -119,6 +126,9 @@ static void LoadConstants(LoadState* S, 
+    case LUA_TNUMBER:
+ 	setnvalue(o,LoadNumber(S));
+ 	break;
++   case LUA_TINT:   /* Integer type saved in bytecode (see lcode.c) */
++	setivalue(o,LoadInteger(S));
++	break;
+    case LUA_TSTRING:
+ 	setsvalue2n(S->L,o,LoadString(S));
+ 	break;
+@@ -223,5 +233,22 @@ void luaU_header (char* h)
+  *h++=(char)sizeof(size_t);
+  *h++=(char)sizeof(Instruction);
+  *h++=(char)sizeof(lua_Number);
+- *h++=(char)(((lua_Number)0.5)==0);		/* is lua_Number integral? */
++
++ /* 
++  * Last byte of header (0/1 in unpatched Lua 5.1.3):
++  *
++  * 0: lua_Number is float or double, lua_Integer not used. (nonpatched only)
++  * 1: lua_Number is integer (nonpatched only)
++  *
++  * +2: LNUM_INT16: sizeof(lua_Integer)
++  * +4: LNUM_INT32: sizeof(lua_Integer)
++  * +8: LNUM_INT64: sizeof(lua_Integer)
++  *
++  * +0x80: LNUM_COMPLEX
++  */
++ *h++ = (char)(sizeof(lua_Integer)
++#ifdef LNUM_COMPLEX
++    | 0x80
++#endif
++    );
+ }
+--- a/src/lvm.c
++++ b/src/lvm.c
+@@ -25,22 +25,35 @@
+ #include "ltable.h"
+ #include "ltm.h"
+ #include "lvm.h"
+-
+-
++#include "llex.h"
++#include "lnum.h"
+ 
+ /* limit for table tag-method chains (to avoid loops) */
+ #define MAXTAGLOOP	100
+ 
+ 
+-const TValue *luaV_tonumber (const TValue *obj, TValue *n) {
+-  lua_Number num;
++/*
++ * If 'obj' is a string, it is tried to be interpreted as a number.
++ */
++const TValue *luaV_tonumber ( const TValue *obj, TValue *n) {
++  lua_Number d;
++  lua_Integer i;
++  
+   if (ttisnumber(obj)) return obj;
+-  if (ttisstring(obj) && luaO_str2d(svalue(obj), &num)) {
+-    setnvalue(n, num);
+-    return n;
+-  }
+-  else
+-    return NULL;
++
++  if (ttisstring(obj)) {
++    switch( luaO_str2d( svalue(obj), &d, &i ) ) {
++        case TK_INT:
++            setivalue(n,i); return n;
++        case TK_NUMBER: 
++            setnvalue(n,d); return n;
++#ifdef LNUM_COMPLEX
++        case TK_NUMBER2:    /* "N.NNNi", != 0 */
++            setnvalue_complex_fast(n, d*I); return n;
++#endif
++        }
++    }
++  return NULL;
+ }
+ 
+ 
+@@ -49,8 +62,7 @@ int luaV_tostring (lua_State *L, StkId o
+     return 0;
+   else {
+     char s[LUAI_MAXNUMBER2STR];
+-    lua_Number n = nvalue(obj);
+-    lua_number2str(s, n);
++    luaO_num2buf(s,obj);
+     setsvalue2s(L, obj, luaS_new(L, s));
+     return 1;
+   }
+@@ -222,59 +234,127 @@ static int l_strcmp (const TString *ls, 
+ }
+ 
+ 
++#ifdef LNUM_COMPLEX
++void error_complex( lua_State *L, const TValue *l, const TValue *r )
++{
++  char buf1[ LUAI_MAXNUMBER2STR ];
++  char buf2[ LUAI_MAXNUMBER2STR ];
++  luaO_num2buf( buf1, l );
++  luaO_num2buf( buf2, r );
++  luaG_runerror( L, "unable to compare: %s with %s", buf1, buf2 );
++  /* no return */
++}
++#endif
++
++
+ int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r) {
+   int res;
+-  if (ttype(l) != ttype(r))
++  int tl,tr;
++  lua_Integer tmp;
++
++  if (!ttype_ext_same(l,r))
+     return luaG_ordererror(L, l, r);
+-  else if (ttisnumber(l))
+-    return luai_numlt(nvalue(l), nvalue(r));
+-  else if (ttisstring(l))
+-    return l_strcmp(rawtsvalue(l), rawtsvalue(r)) < 0;
+-  else if ((res = call_orderTM(L, l, r, TM_LT)) != -1)
++#ifdef LNUM_COMPLEX
++  if ( (nvalue_img(l)!=0) || (nvalue_img(r)!=0) )
++    error_complex( L, l, r );
++#endif
++  tl= ttype(l); tr= ttype(r);
++  if (tl==tr) {  /* clear arithmetics */
++    switch(tl) {
++      case LUA_TINT:      return ivalue(l) < ivalue(r);
++      case LUA_TNUMBER:   return luai_numlt(nvalue_fast(l), nvalue_fast(r));
++      case LUA_TSTRING:   return l_strcmp(rawtsvalue(l), rawtsvalue(r)) < 0;
++    }
++  } else if (tl==LUA_TINT) {  /* l:int, r:num */
++    /* Avoid accuracy losing casts: if 'r' is integer by value, do comparisons
++     * in integer realm. Only otherwise cast 'l' to FP (which might change its
++     * value).
++     */
++    if (tt_integer_valued(r,&tmp)) 
++        return ivalue(l) < tmp;
++    else 
++        return luai_numlt( cast_num(ivalue(l)), nvalue_fast(r) );
++
++  } else if (tl==LUA_TNUMBER) {  /* l:num, r:int */
++    if (tt_integer_valued(l,&tmp)) 
++        return tmp < ivalue(r);
++    else
++        return luai_numlt( nvalue_fast(l), cast_num(ivalue(r)) );
++
++  } else if ((res = call_orderTM(L, l, r, TM_LT)) != -1)
+     return res;
++
+   return luaG_ordererror(L, l, r);
+ }
+ 
+ 
+ static int lessequal (lua_State *L, const TValue *l, const TValue *r) {
+   int res;
+-  if (ttype(l) != ttype(r))
++  int tl, tr;
++  lua_Integer tmp;
++
++  if (!ttype_ext_same(l,r))
+     return luaG_ordererror(L, l, r);
+-  else if (ttisnumber(l))
+-    return luai_numle(nvalue(l), nvalue(r));
+-  else if (ttisstring(l))
+-    return l_strcmp(rawtsvalue(l), rawtsvalue(r)) <= 0;
+-  else if ((res = call_orderTM(L, l, r, TM_LE)) != -1)  /* first try `le' */
++#ifdef LNUM_COMPLEX
++  if ( (nvalue_img(l)!=0) || (nvalue_img(r)!=0) )
++    error_complex( L, l, r );
++#endif
++  tl= ttype(l); tr= ttype(r);
++  if (tl==tr) {  /* clear arithmetics */
++    switch(tl) {
++      case LUA_TINT:      return ivalue(l) <= ivalue(r);
++      case LUA_TNUMBER:   return luai_numle(nvalue_fast(l), nvalue_fast(r));
++      case LUA_TSTRING:   return l_strcmp(rawtsvalue(l), rawtsvalue(r)) <= 0;
++    }
++  }
++  if (tl==LUA_TINT) {  /* l:int, r:num */
++    if (tt_integer_valued(r,&tmp)) 
++        return ivalue(l) <= tmp;
++    else
++        return luai_numle( cast_num(ivalue(l)), nvalue_fast(r) );
++
++  } else if (tl==LUA_TNUMBER) {  /* l:num, r:int */
++    if (tt_integer_valued(l,&tmp)) 
++        return tmp <= ivalue(r);
++    else
++        return luai_numle( nvalue_fast(l), cast_num(ivalue(r)) );
++
++  } else if ((res = call_orderTM(L, l, r, TM_LE)) != -1)  /* first try `le' */
+     return res;
+   else if ((res = call_orderTM(L, r, l, TM_LT)) != -1)  /* else try `lt' */
+     return !res;
++
+   return luaG_ordererror(L, l, r);
+ }
+ 
+ 
+-int luaV_equalval (lua_State *L, const TValue *t1, const TValue *t2) {
++/* Note: 'luaV_equalval()' and 'luaO_rawequalObj()' have largely overlapping
++ *       implementation. LUA_TNIL..LUA_TLIGHTUSERDATA cases could be handled
++ *       simply by the 'default' case here.
++ */
++int luaV_equalval (lua_State *L, const TValue *l, const TValue *r) {
+   const TValue *tm;
+-  lua_assert(ttype(t1) == ttype(t2));
+-  switch (ttype(t1)) {
++  lua_assert(ttype_ext_same(l,r));
++  switch (ttype(l)) {
+     case LUA_TNIL: return 1;
+-    case LUA_TNUMBER: return luai_numeq(nvalue(t1), nvalue(t2));
+-    case LUA_TBOOLEAN: return bvalue(t1) == bvalue(t2);  /* true must be 1 !! */
+-    case LUA_TLIGHTUSERDATA: return pvalue(t1) == pvalue(t2);
++    case LUA_TINT:
++    case LUA_TNUMBER: return luaO_rawequalObj(l,r);
++    case LUA_TBOOLEAN: return bvalue(l) == bvalue(r);  /* true must be 1 !! */
++    case LUA_TLIGHTUSERDATA: return pvalue(l) == pvalue(r);
+     case LUA_TUSERDATA: {
+-      if (uvalue(t1) == uvalue(t2)) return 1;
+-      tm = get_compTM(L, uvalue(t1)->metatable, uvalue(t2)->metatable,
+-                         TM_EQ);
++      if (uvalue(l) == uvalue(r)) return 1;
++      tm = get_compTM(L, uvalue(l)->metatable, uvalue(r)->metatable, TM_EQ);
+       break;  /* will try TM */
+     }
+     case LUA_TTABLE: {
+-      if (hvalue(t1) == hvalue(t2)) return 1;
+-      tm = get_compTM(L, hvalue(t1)->metatable, hvalue(t2)->metatable, TM_EQ);
++      if (hvalue(l) == hvalue(r)) return 1;
++      tm = get_compTM(L, hvalue(l)->metatable, hvalue(r)->metatable, TM_EQ);
+       break;  /* will try TM */
+     }
+-    default: return gcvalue(t1) == gcvalue(t2);
++    default: return gcvalue(l) == gcvalue(r);
+   }
+   if (tm == NULL) return 0;  /* no TM? */
+-  callTMres(L, L->top, tm, t1, t2);  /* call TM */
++  callTMres(L, L->top, tm, l, r);  /* call TM */
+   return !l_isfalse(L->top);
+ }
+ 
+@@ -314,30 +394,6 @@ void luaV_concat (lua_State *L, int tota
+ }
+ 
+ 
+-static void Arith (lua_State *L, StkId ra, const TValue *rb,
+-                   const TValue *rc, TMS op) {
+-  TValue tempb, tempc;
+-  const TValue *b, *c;
+-  if ((b = luaV_tonumber(rb, &tempb)) != NULL &&
+-      (c = luaV_tonumber(rc, &tempc)) != NULL) {
+-    lua_Number nb = nvalue(b), nc = nvalue(c);
+-    switch (op) {
+-      case TM_ADD: setnvalue(ra, luai_numadd(nb, nc)); break;
+-      case TM_SUB: setnvalue(ra, luai_numsub(nb, nc)); break;
+-      case TM_MUL: setnvalue(ra, luai_nummul(nb, nc)); break;
+-      case TM_DIV: setnvalue(ra, luai_numdiv(nb, nc)); break;
+-      case TM_MOD: setnvalue(ra, luai_nummod(nb, nc)); break;
+-      case TM_POW: setnvalue(ra, luai_numpow(nb, nc)); break;
+-      case TM_UNM: setnvalue(ra, luai_numunm(nb)); break;
+-      default: lua_assert(0); break;
+-    }
+-  }
+-  else if (!call_binTM(L, rb, rc, ra, op))
+-    luaG_aritherror(L, rb, rc);
+-}
+-
+-
+-
+ /*
+ ** some macros for common tasks in `luaV_execute'
+ */
+@@ -361,17 +417,154 @@ static void Arith (lua_State *L, StkId r
+ #define Protect(x)	{ L->savedpc = pc; {x;}; base = L->base; }
+ 
+ 
+-#define arith_op(op,tm) { \
+-        TValue *rb = RKB(i); \
+-        TValue *rc = RKC(i); \
+-        if (ttisnumber(rb) && ttisnumber(rc)) { \
+-          lua_Number nb = nvalue(rb), nc = nvalue(rc); \
+-          setnvalue(ra, op(nb, nc)); \
+-        } \
+-        else \
+-          Protect(Arith(L, ra, rb, rc, tm)); \
++/* Note: if called for unary operations, 'rc'=='rb'.
++ */
++static void Arith (lua_State *L, StkId ra, const TValue *rb,
++                   const TValue *rc, TMS op) {
++  TValue tempb, tempc;
++  const TValue *b, *c;
++  lua_Number nb,nc;
++
++  if ((b = luaV_tonumber(rb, &tempb)) != NULL &&
++      (c = luaV_tonumber(rc, &tempc)) != NULL) {
++
++    /* Keep integer arithmetics in the integer realm, if possible.
++     */
++    if (ttisint(b) && ttisint(c)) {
++      lua_Integer ib = ivalue(b), ic = ivalue(c);
++      lua_Integer *ri = &ra->value.i;
++      ra->tt= LUA_TINT;  /* part of 'setivalue(ra)' */
++      switch (op) {
++        case TM_ADD: if (try_addint( ri, ib, ic)) return; break;
++        case TM_SUB: if (try_subint( ri, ib, ic)) return; break;
++        case TM_MUL: if (try_mulint( ri, ib, ic)) return; break;
++        case TM_DIV: if (try_divint( ri, ib, ic)) return; break;
++        case TM_MOD: if (try_modint( ri, ib, ic)) return; break;
++        case TM_POW: if (try_powint( ri, ib, ic)) return; break;
++        case TM_UNM: if (try_unmint( ri, ib)) return; break;
++        default: lua_assert(0);
++      }
++    }
++    /* Fallback to floating point, when leaving range. */
++
++#ifdef LNUM_COMPLEX
++    if ((nvalue_img(b)!=0) || (nvalue_img(c)!=0)) {
++      lua_Complex r;
++      if (op==TM_UNM) {
++        r= -nvalue_complex_fast(b);     /* never an integer (or scalar) */
++        setnvalue_complex_fast( ra, r );
++      } else {
++        lua_Complex bb= nvalue_complex(b), cc= nvalue_complex(c);
++        switch (op) {
++          case TM_ADD: r= bb + cc; break;
++          case TM_SUB: r= bb - cc; break;
++          case TM_MUL: r= bb * cc; break;
++          case TM_DIV: r= bb / cc; break;
++          case TM_MOD: 
++            luaG_runerror(L, "attempt to use %% on complex numbers");  /* no return */
++          case TM_POW: r= luai_vectpow( bb, cc ); break;
++          default: lua_assert(0); r=0;
++        }
++        setnvalue_complex( ra, r );
+       }
++      return;
++    }
++#endif
++    nb = nvalue(b); nc = nvalue(c);
++    switch (op) {
++      case TM_ADD: setnvalue(ra, luai_numadd(nb, nc)); return;
++      case TM_SUB: setnvalue(ra, luai_numsub(nb, nc)); return;
++      case TM_MUL: setnvalue(ra, luai_nummul(nb, nc)); return;
++      case TM_DIV: setnvalue(ra, luai_numdiv(nb, nc)); return;
++      case TM_MOD: setnvalue(ra, luai_nummod(nb, nc)); return;
++      case TM_POW: setnvalue(ra, luai_numpow(nb, nc)); return;
++      case TM_UNM: setnvalue(ra, luai_numunm(nb)); return;
++      default: lua_assert(0);
++    }
++  }
++  
++  /* Either operand not a number */
++  if (!call_binTM(L, rb, rc, ra, op))
++    luaG_aritherror(L, rb, rc);
++}
+ 
++/* Helper macro to sort arithmetic operations into four categories:
++ *  TK_INT: integer - integer operands
++ *  TK_NUMBER: number - number (non complex, either may be integer)
++ *  TK_NUMBER2: complex numbers (at least the other)
++ *  0: non-numeric (at least the other)
++*/
++#ifdef LNUM_COMPLEX
++static inline int arith_mode( const TValue *rb, const TValue *rc ) {
++  if (ttisint(rb) && ttisint(rc)) return TK_INT;
++  if (ttiscomplex(rb) || ttiscomplex(rc)) return TK_NUMBER2;
++  if (ttisnumber(rb) && ttisnumber(rc)) return TK_NUMBER;
++  return 0;
++}
++#else
++# define arith_mode(rb,rc) \
++    ( (ttisint(rb) && ttisint(rc)) ? TK_INT : \
++      (ttisnumber(rb) && ttisnumber(rc)) ? TK_NUMBER : 0 )
++#endif
++
++/* arith_op macro for two operators:
++ * automatically chooses, which function (number, integer, complex) to use
++ */
++#define ARITH_OP2_START( op_num, op_int ) \
++  int failed= 0; \
++  switch( arith_mode(rb,rc) ) { \
++    case TK_INT: \
++      if (op_int ( &(ra)->value.i, ivalue(rb), ivalue(rc) )) \
++        { ra->tt= LUA_TINT; break; } /* else flow through */ \
++    case TK_NUMBER: \
++      setnvalue(ra, op_num ( nvalue(rb), nvalue(rc) )); break;
++
++#define ARITH_OP2_END \
++    default: \
++      failed= 1; break; \
++  } if (!failed) continue;
++
++#define arith_op_continue_scalar( op_num, op_int ) \
++    ARITH_OP2_START( op_num, op_int ) \
++    ARITH_OP2_END
++
++#ifdef LNUM_COMPLEX
++# define arith_op_continue( op_num, op_int, op_complex ) \
++    ARITH_OP2_START( op_num, op_int ) \
++      case TK_NUMBER2: \
++        setnvalue_complex( ra, op_complex ( nvalue_complex(rb), nvalue_complex(rc) ) ); break; \
++    ARITH_OP2_END
++#else
++# define arith_op_continue(op_num,op_int,_) arith_op_continue_scalar(op_num,op_int)
++#endif
++
++/* arith_op macro for one operator:
++ */
++#define ARITH_OP1_START( op_num, op_int ) \
++  int failed= 0; \
++  switch( arith_mode(rb,rb) ) { \
++    case TK_INT: \
++      if (op_int ( &(ra)->value.i, ivalue(rb) )) \
++        { ra->tt= LUA_TINT; break; } /* else flow through */ \
++      case TK_NUMBER: \
++        setnvalue(ra, op_num (nvalue(rb))); break; \
++
++#define ARITH_OP1_END \
++      default: \
++        failed= 1; break; \
++  } if (!failed) continue;
++
++#ifdef LNUM_COMPLEX
++# define arith_op1_continue( op_num, op_int, op_complex ) \
++    ARITH_OP1_START( op_num, op_int ) \
++      case TK_NUMBER2: \
++        setnvalue_complex( ra, op_complex ( nvalue_complex_fast(rb) )); break; \
++    ARITH_OP1_END
++#else
++# define arith_op1_continue( op_num, op_int, _ ) \
++    ARITH_OP1_START( op_num, op_int ) \
++    ARITH_OP1_END
++#endif
+ 
+ 
+ void luaV_execute (lua_State *L, int nexeccalls) {
+@@ -472,38 +665,45 @@ void luaV_execute (lua_State *L, int nex
+         continue;
+       }
+       case OP_ADD: {
+-        arith_op(luai_numadd, TM_ADD);
++        TValue *rb = RKB(i), *rc= RKC(i);
++        arith_op_continue( luai_numadd, try_addint, luai_vectadd );
++        Protect(Arith(L, ra, rb, rc, TM_ADD)); \
+         continue;
+       }
+       case OP_SUB: {
+-        arith_op(luai_numsub, TM_SUB);
++        TValue *rb = RKB(i), *rc= RKC(i);
++        arith_op_continue( luai_numsub, try_subint, luai_vectsub );
++        Protect(Arith(L, ra, rb, rc, TM_SUB));
+         continue;
+       }
+       case OP_MUL: {
+-        arith_op(luai_nummul, TM_MUL);
++        TValue *rb = RKB(i), *rc= RKC(i);
++        arith_op_continue(luai_nummul, try_mulint, luai_vectmul);
++        Protect(Arith(L, ra, rb, rc, TM_MUL));
+         continue;
+       }
+       case OP_DIV: {
+-        arith_op(luai_numdiv, TM_DIV);
++        TValue *rb = RKB(i), *rc= RKC(i);
++        arith_op_continue(luai_numdiv, try_divint, luai_vectdiv);
++        Protect(Arith(L, ra, rb, rc, TM_DIV));
+         continue;
+       }
+       case OP_MOD: {
+-        arith_op(luai_nummod, TM_MOD);
++        TValue *rb = RKB(i), *rc= RKC(i);
++        arith_op_continue_scalar(luai_nummod, try_modint);  /* scalars only */
++        Protect(Arith(L, ra, rb, rc, TM_MOD));
+         continue;
+       }
+       case OP_POW: {
+-        arith_op(luai_numpow, TM_POW);
++        TValue *rb = RKB(i), *rc= RKC(i);
++        arith_op_continue(luai_numpow, try_powint, luai_vectpow);
++        Protect(Arith(L, ra, rb, rc, TM_POW));
+         continue;
+       }
+       case OP_UNM: {
+         TValue *rb = RB(i);
+-        if (ttisnumber(rb)) {
+-          lua_Number nb = nvalue(rb);
+-          setnvalue(ra, luai_numunm(nb));
+-        }
+-        else {
+-          Protect(Arith(L, ra, rb, rb, TM_UNM));
+-        }
++        arith_op1_continue(luai_numunm, try_unmint, luai_vectunm);
++        Protect(Arith(L, ra, rb, rb, TM_UNM));
+         continue;
+       }
+       case OP_NOT: {
+@@ -515,11 +715,11 @@ void luaV_execute (lua_State *L, int nex
+         const TValue *rb = RB(i);
+         switch (ttype(rb)) {
+           case LUA_TTABLE: {
+-            setnvalue(ra, cast_num(luaH_getn(hvalue(rb))));
++            setivalue(ra, luaH_getn(hvalue(rb)));
+             break;
+           }
+           case LUA_TSTRING: {
+-            setnvalue(ra, cast_num(tsvalue(rb)->len));
++            setivalue(ra, tsvalue(rb)->len);
+             break;
+           }
+           default: {  /* try metamethod */
+@@ -652,14 +852,30 @@ void luaV_execute (lua_State *L, int nex
+         }
+       }
+       case OP_FORLOOP: {
+-        lua_Number step = nvalue(ra+2);
+-        lua_Number idx = luai_numadd(nvalue(ra), step); /* increment index */
+-        lua_Number limit = nvalue(ra+1);
+-        if (luai_numlt(0, step) ? luai_numle(idx, limit)
+-                                : luai_numle(limit, idx)) {
+-          dojump(L, pc, GETARG_sBx(i));  /* jump back */
+-          setnvalue(ra, idx);  /* update internal index... */
+-          setnvalue(ra+3, idx);  /* ...and external index */
++        /* If start,step and limit are all integers, we don't need to check
++         * against overflow in the looping.
++         */
++        if (ttisint(ra) && ttisint(ra+1) && ttisint(ra+2)) {
++          lua_Integer step = ivalue(ra+2);
++          lua_Integer idx = ivalue(ra) + step; /* increment index */
++          lua_Integer limit = ivalue(ra+1);
++          if (step > 0 ? (idx <= limit) : (limit <= idx)) {
++            dojump(L, pc, GETARG_sBx(i));  /* jump back */
++            setivalue(ra, idx);  /* update internal index... */
++            setivalue(ra+3, idx);  /* ...and external index */
++          }
++        } else {
++          /* non-integer looping (don't use 'nvalue_fast', some may be integer!) 
++          */
++          lua_Number step = nvalue(ra+2);
++          lua_Number idx = luai_numadd(nvalue(ra), step); /* increment index */
++          lua_Number limit = nvalue(ra+1);
++          if (luai_numlt(0, step) ? luai_numle(idx, limit)
++                                  : luai_numle(limit, idx)) {
++            dojump(L, pc, GETARG_sBx(i));  /* jump back */
++            setnvalue(ra, idx);  /* update internal index... */
++            setnvalue(ra+3, idx);  /* ...and external index */
++          }
+         }
+         continue;
+       }
+@@ -668,13 +884,21 @@ void luaV_execute (lua_State *L, int nex
+         const TValue *plimit = ra+1;
+         const TValue *pstep = ra+2;
+         L->savedpc = pc;  /* next steps may throw errors */
++        /* Using same location for tonumber's both arguments, effectively does
++         * in-place modification (string->number). */
+         if (!tonumber(init, ra))
+           luaG_runerror(L, LUA_QL("for") " initial value must be a number");
+         else if (!tonumber(plimit, ra+1))
+           luaG_runerror(L, LUA_QL("for") " limit must be a number");
+         else if (!tonumber(pstep, ra+2))
+           luaG_runerror(L, LUA_QL("for") " step must be a number");
+-        setnvalue(ra, luai_numsub(nvalue(ra), nvalue(pstep)));
++        /* Step back one value (keep within integers if we can)
++         */
++        if (!( ttisint(ra) && ttisint(pstep) &&
++               try_subint( &ra->value.i, ivalue(ra), ivalue(pstep) ) )) {
++            /* don't use 'nvalue_fast()', values may be integer */
++            setnvalue(ra, luai_numsub(nvalue(ra), nvalue(pstep)));
++        }
+         dojump(L, pc, GETARG_sBx(i));
+         continue;
+       }
+@@ -711,7 +935,7 @@ void luaV_execute (lua_State *L, int nex
+           luaH_resizearray(L, h, last);  /* pre-alloc it at once */
+         for (; n > 0; n--) {
+           TValue *val = ra+n;
+-          setobj2t(L, luaH_setnum(L, h, last--), val);
++          setobj2t(L, luaH_setint(L, h, last--), val);
+           luaC_barriert(L, h, val);
+         }
+         continue;
+--- a/src/lvm.h
++++ b/src/lvm.h
+@@ -15,11 +15,9 @@
+ 
+ #define tostring(L,o) ((ttype(o) == LUA_TSTRING) || (luaV_tostring(L, o)))
+ 
+-#define tonumber(o,n)	(ttype(o) == LUA_TNUMBER || \
+-                         (((o) = luaV_tonumber(o,n)) != NULL))
++#define tonumber(o,n) (ttisnumber(o) || (((o) = luaV_tonumber(o,n)) != NULL))
+ 
+-#define equalobj(L,o1,o2) \
+-	(ttype(o1) == ttype(o2) && luaV_equalval(L, o1, o2))
++#define equalobj(L,o1,o2) (ttype_ext_same(o1,o2) && luaV_equalval(L, o1, o2))
+ 
+ 
+ LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r);
+--- a/src/print.c
++++ b/src/print.c
+@@ -14,6 +14,7 @@
+ #include "lobject.h"
+ #include "lopcodes.h"
+ #include "lundump.h"
++#include "lnum.h"
+ 
+ #define PrintFunction	luaU_print
+ 
+@@ -59,8 +60,16 @@ static void PrintConstant(const Proto* f
+   case LUA_TBOOLEAN:
+ 	printf(bvalue(o) ? "true" : "false");
+ 	break;
++  case LUA_TINT:
++	printf(LUA_INTEGER_FMT,ivalue(o));
++	break;
+   case LUA_TNUMBER:
+-	printf(LUA_NUMBER_FMT,nvalue(o));
++#ifdef LNUM_COMPLEX
++    // TBD: Do we get complex values here?
++    { lua_Number b= nvalue_img_fast(o);
++	  printf( LUA_NUMBER_FMT "%s" LUA_NUMBER_FMT "i", nvalue_fast(o), b>=0 ? "+":"", b ); }
++#endif
++	printf(LUA_NUMBER_FMT,nvalue_fast(o));
+ 	break;
+   case LUA_TSTRING:
+ 	PrintString(rawtsvalue(o));
diff --git a/package/utils/lua/patches-host/011-lnum-use-double.patch b/package/utils/lua/patches-host/011-lnum-use-double.patch
new file mode 100644
index 0000000000..14c720bf19
--- /dev/null
+++ b/package/utils/lua/patches-host/011-lnum-use-double.patch
@@ -0,0 +1,11 @@
+--- a/src/lnum_config.h
++++ b/src/lnum_config.h
+@@ -11,7 +11,7 @@
+ ** Default number modes
+ */
+ #if (!defined LNUM_DOUBLE) && (!defined LNUM_FLOAT) && (!defined LNUM_LDOUBLE)
+-# define LNUM_FLOAT
++# define LNUM_DOUBLE
+ #endif
+ #if (!defined LNUM_INT16) && (!defined LNUM_INT32) && (!defined LNUM_INT64)
+ # define LNUM_INT32
diff --git a/package/utils/lua/patches-host/015-lnum-ppc-compat.patch b/package/utils/lua/patches-host/015-lnum-ppc-compat.patch
new file mode 100644
index 0000000000..2ea59f1769
--- /dev/null
+++ b/package/utils/lua/patches-host/015-lnum-ppc-compat.patch
@@ -0,0 +1,11 @@
+--- a/src/lua.h
++++ b/src/lua.h
+@@ -79,7 +79,7 @@ typedef void * (*lua_Alloc) (void *ud, v
+  *     not acceptable for 5.1, maybe 5.2 onwards?
+  *  9: greater than existing (5.1) type values.
+ */
+-#define LUA_TINT (-2)
++#define LUA_TINT 9
+ 
+ #define LUA_TNIL		0
+ #define LUA_TBOOLEAN		1
diff --git a/package/utils/lua/patches-host/030-archindependent-bytecode.patch b/package/utils/lua/patches-host/030-archindependent-bytecode.patch
new file mode 100644
index 0000000000..8dfef85d0d
--- /dev/null
+++ b/package/utils/lua/patches-host/030-archindependent-bytecode.patch
@@ -0,0 +1,111 @@
+--- a/src/ldump.c
++++ b/src/ldump.c
+@@ -67,12 +67,12 @@ static void DumpString(const TString* s,
+ {
+  if (s==NULL || getstr(s)==NULL)
+  {
+-  size_t size=0;
++  unsigned int size=0;
+   DumpVar(size,D);
+  }
+  else
+  {
+-  size_t size=s->tsv.len+1;		/* include trailing '\0' */
++  unsigned int size=s->tsv.len+1;		/* include trailing '\0' */
+   DumpVar(size,D);
+   DumpBlock(getstr(s),size,D);
+  }
+--- a/src/lundump.c
++++ b/src/lundump.c
+@@ -25,6 +25,7 @@ typedef struct {
+  ZIO* Z;
+  Mbuffer* b;
+  const char* name;
++ int swap;
+ } LoadState;
+ 
+ #ifdef LUAC_TRUST_BINARIES
+@@ -40,7 +41,6 @@ static void error(LoadState* S, const ch
+ }
+ #endif
+ 
+-#define LoadMem(S,b,n,size)	LoadBlock(S,b,(n)*(size))
+ #define	LoadByte(S)		(lu_byte)LoadChar(S)
+ #define LoadVar(S,x)		LoadMem(S,&x,1,sizeof(x))
+ #define LoadVector(S,b,n,size)	LoadMem(S,b,n,size)
+@@ -51,6 +51,49 @@ static void LoadBlock(LoadState* S, void
+  IF (r!=0, "unexpected end");
+ }
+ 
++static void LoadMem (LoadState* S, void* b, int n, size_t size)
++{
++ LoadBlock(S,b,n*size);
++ if (S->swap)
++ {
++  char* p=(char*) b;
++  char c;
++  switch (size)
++  {
++   case 1:
++  	break;
++   case 2:
++	while (n--)
++	{
++	 c=p[0]; p[0]=p[1]; p[1]=c;
++	 p+=2;
++	}
++  	break;
++   case 4:
++	while (n--)
++	{
++	 c=p[0]; p[0]=p[3]; p[3]=c;
++	 c=p[1]; p[1]=p[2]; p[2]=c;
++	 p+=4;
++	}
++  	break;
++   case 8:
++	while (n--)
++	{
++	 c=p[0]; p[0]=p[7]; p[7]=c;
++	 c=p[1]; p[1]=p[6]; p[6]=c;
++	 c=p[2]; p[2]=p[5]; p[5]=c;
++	 c=p[3]; p[3]=p[4]; p[4]=c;
++	 p+=8;
++	}
++  	break;
++   default:
++   	IF(1, "bad size");
++  	break;
++  }
++ }
++}
++
+ static int LoadChar(LoadState* S)
+ {
+  char x;
+@@ -82,7 +125,7 @@ static lua_Integer LoadInteger(LoadState
+ 
+ static TString* LoadString(LoadState* S)
+ {
+- size_t size;
++ unsigned int size;
+  LoadVar(S,size);
+  if (size==0)
+   return NULL;
+@@ -196,6 +239,7 @@ static void LoadHeader(LoadState* S)
+  char s[LUAC_HEADERSIZE];
+  luaU_header(h);
+  LoadBlock(S,s,LUAC_HEADERSIZE);
++ S->swap=(s[6]!=h[6]); s[6]=h[6];
+  IF (memcmp(h,s,LUAC_HEADERSIZE)!=0, "bad header");
+ }
+ 
+@@ -230,7 +274,7 @@ void luaU_header (char* h)
+  *h++=(char)LUAC_FORMAT;
+  *h++=(char)*(char*)&x;				/* endianness */
+  *h++=(char)sizeof(int);
+- *h++=(char)sizeof(size_t);
++ *h++=(char)sizeof(unsigned int);
+  *h++=(char)sizeof(Instruction);
+  *h++=(char)sizeof(lua_Number);
+ 
diff --git a/package/utils/lua/patches-host/100-no_readline.patch b/package/utils/lua/patches-host/100-no_readline.patch
new file mode 100644
index 0000000000..209c302bb7
--- /dev/null
+++ b/package/utils/lua/patches-host/100-no_readline.patch
@@ -0,0 +1,49 @@
+--- a/src/luaconf.h
++++ b/src/luaconf.h
+@@ -38,7 +38,6 @@
+ #if defined(LUA_USE_LINUX)
+ #define LUA_USE_POSIX
+ #define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
+-#define LUA_USE_READLINE	/* needs some extra libraries */
+ #endif
+ 
+ #if defined(LUA_USE_MACOSX)
+--- a/src/Makefile
++++ b/src/Makefile
+@@ -17,6 +17,7 @@
+ MYCFLAGS=
+ MYLDFLAGS=
+ MYLIBS=
++# USE_READLINE=1
+ 
+ # == END OF USER SETTINGS. NO NEED TO CHANGE ANYTHING BELOW THIS LINE =========
+ 
+@@ -75,7 +76,7 @@
+ 	@echo "MYLIBS = $(MYLIBS)"
+ 
+ # convenience targets for popular platforms
+-
++RFLAG=$(if $(USE_READLINE),-DLUA_USE_READLINE)
+ none:
+ 	@echo "Please choose a platform:"
+ 	@echo "   $(PLATS)"
+@@ -90,16 +91,16 @@
+ 	$(MAKE) all MYCFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN" MYLIBS="-Wl,-E"
+ 
+ freebsd:
+-	$(MAKE) all MYCFLAGS="-DLUA_USE_LINUX" MYLIBS="-Wl,-E -lreadline"
++	$(MAKE) all MYCFLAGS="-DLUA_USE_LINUX" $(RFLAG)" MYLIBS="-Wl,-E$(if $(USE_READLINE), -lreadline)"
+ 
+ generic:
+ 	$(MAKE) all MYCFLAGS=
+ 
+ linux:
+-	$(MAKE) all MYCFLAGS=-DLUA_USE_LINUX MYLIBS="-Wl,-E -ldl -lreadline -lhistory -lncurses"
++	$(MAKE) all MYCFLAGS="-DLUA_USE_LINUX $(RFLAG)" MYLIBS="-Wl,-E -ldl $(if $(USE_READLINE), -lreadline -lhistory -lncurses)"
+ 
+ macosx:
+-	$(MAKE) all MYCFLAGS=-DLUA_USE_LINUX MYLIBS="-lreadline"
++	$(MAKE) all MYCFLAGS=-DLUA_USE_LINUX $(if $(USE_READLINE), MYLIBS="-lreadline")
+ # use this on Mac OS X 10.3-
+ #	$(MAKE) all MYCFLAGS=-DLUA_USE_MACOSX
+ 
diff --git a/package/utils/lua/patches/010-lua-5.1.3-lnum-full-260308.patch b/package/utils/lua/patches/010-lua-5.1.3-lnum-full-260308.patch
new file mode 100644
index 0000000000..74b8c6f8f0
--- /dev/null
+++ b/package/utils/lua/patches/010-lua-5.1.3-lnum-full-260308.patch
@@ -0,0 +1,3736 @@
+--- a/src/Makefile
++++ b/src/Makefile
+@@ -25,7 +25,7 @@ PLATS= aix ansi bsd freebsd generic linu
+ LUA_A=	liblua.a
+ CORE_O=	lapi.o lcode.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o lmem.o \
+ 	lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o  \
+-	lundump.o lvm.o lzio.o
++	lundump.o lvm.o lzio.o lnum.o
+ LIB_O=	lauxlib.o lbaselib.o ldblib.o liolib.o lmathlib.o loslib.o ltablib.o \
+ 	lstrlib.o loadlib.o linit.o
+ 
+@@ -148,6 +148,7 @@ llex.o: llex.c lua.h luaconf.h ldo.h lob
+ lmathlib.o: lmathlib.c lua.h luaconf.h lauxlib.h lualib.h
+ lmem.o: lmem.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h \
+   ltm.h lzio.h lmem.h ldo.h
++lnum.o: lnum.c lua.h llex.h lnum.h
+ loadlib.o: loadlib.c lua.h luaconf.h lauxlib.h lualib.h
+ lobject.o: lobject.c lua.h luaconf.h ldo.h lobject.h llimits.h lstate.h \
+   ltm.h lzio.h lmem.h lstring.h lgc.h lvm.h
+@@ -179,4 +180,18 @@ lzio.o: lzio.c lua.h luaconf.h llimits.h
+ print.o: print.c ldebug.h lstate.h lua.h luaconf.h lobject.h llimits.h \
+   ltm.h lzio.h lmem.h lopcodes.h lundump.h
+ 
++luaconf.h: lnum_config.h
++lapi.c: lnum.h
++lauxlib.c: llimits.h
++lbaselib.c: llimits.h lobject.h lapi.h
++lcode.c: lnum.h
++liolib.c: lnum.h llex.h
++llex.c: lnum.h
++lnum.h: lobject.h
++lobject.c: llex.h lnum.h
++ltable.c: lnum.h
++lua.c: llimits.h
++lvm.c: llex.h lnum.h
++print.c: lnum.h
++
+ # (end of Makefile)
+--- a/src/lapi.c
++++ b/src/lapi.c
+@@ -28,7 +28,7 @@
+ #include "ltm.h"
+ #include "lundump.h"
+ #include "lvm.h"
+-
++#include "lnum.h"
+ 
+ 
+ const char lua_ident[] =
+@@ -241,12 +241,13 @@ LUA_API void lua_pushvalue (lua_State *L
+ 
+ LUA_API int lua_type (lua_State *L, int idx) {
+   StkId o = index2adr(L, idx);
+-  return (o == luaO_nilobject) ? LUA_TNONE : ttype(o);
++  return (o == luaO_nilobject) ? LUA_TNONE : ttype_ext(o);
+ }
+ 
+ 
+ LUA_API const char *lua_typename (lua_State *L, int t) {
+   UNUSED(L);
++  lua_assert( t!= LUA_TINT );
+   return (t == LUA_TNONE) ? "no value" : luaT_typenames[t];
+ }
+ 
+@@ -264,6 +265,14 @@ LUA_API int lua_isnumber (lua_State *L, 
+ }
+ 
+ 
++LUA_API int lua_isinteger (lua_State *L, int idx) {
++  TValue tmp;
++  lua_Integer dum;
++  const TValue *o = index2adr(L, idx);
++  return tonumber(o,&tmp) && (ttisint(o) || tt_integer_valued(o,&dum));
++}
++
++
+ LUA_API int lua_isstring (lua_State *L, int idx) {
+   int t = lua_type(L, idx);
+   return (t == LUA_TSTRING || t == LUA_TNUMBER);
+@@ -309,31 +318,66 @@ LUA_API int lua_lessthan (lua_State *L, 
+ }
+ 
+ 
+-
+ LUA_API lua_Number lua_tonumber (lua_State *L, int idx) {
+   TValue n;
+   const TValue *o = index2adr(L, idx);
+-  if (tonumber(o, &n))
++  if (tonumber(o, &n)) {
++#ifdef LNUM_COMPLEX
++    if (nvalue_img(o) != 0)
++      luaG_runerror(L, "expecting a real number");
++#endif
+     return nvalue(o);
+-  else
+-    return 0;
++  }
++  return 0;
+ }
+ 
+ 
+ LUA_API lua_Integer lua_tointeger (lua_State *L, int idx) {
+   TValue n;
++    /* Lua 5.1 documented behaviour is to return nonzero for non-integer:
++     * "If the number is not an integer, it is truncated in some non-specified way." 
++     * I would suggest to change this, to return 0 for anything that would
++     * not fit in 'lua_Integer'.
++     */
++#ifdef LUA_COMPAT_TOINTEGER
++  /* Lua 5.1 compatible */
+   const TValue *o = index2adr(L, idx);
+   if (tonumber(o, &n)) {
+-    lua_Integer res;
+-    lua_Number num = nvalue(o);
+-    lua_number2integer(res, num);
+-    return res;
++    lua_Integer i;
++    lua_Number d;
++    if (ttisint(o)) return ivalue(o);
++    d= nvalue_fast(o);
++# ifdef LNUM_COMPLEX
++    if (nvalue_img_fast(o) != 0)
++      luaG_runerror(L, "expecting a real number");
++# endif
++    lua_number2integer(i, d);
++    return i;
+   }
+-  else
+-    return 0;
++#else
++  /* New suggestion */
++  const TValue *o = index2adr(L, idx);
++  if (tonumber(o, &n)) {
++    lua_Integer i;
++    if (ttisint(o)) return ivalue(o);
++    if (tt_integer_valued(o,&i)) return i;
++  }
++#endif
++  return 0;
+ }
+ 
+ 
++#ifdef LNUM_COMPLEX
++LUA_API lua_Complex lua_tocomplex (lua_State *L, int idx) {
++  TValue tmp;
++  const TValue *o = index2adr(L, idx);
++  if (tonumber(o, &tmp))
++    return nvalue_complex(o);
++  return 0;
++}
++#endif
++
++
+ LUA_API int lua_toboolean (lua_State *L, int idx) {
+   const TValue *o = index2adr(L, idx);
+   return !l_isfalse(o);
+@@ -364,6 +408,7 @@ LUA_API size_t lua_objlen (lua_State *L,
+     case LUA_TSTRING: return tsvalue(o)->len;
+     case LUA_TUSERDATA: return uvalue(o)->len;
+     case LUA_TTABLE: return luaH_getn(hvalue(o));
++    case LUA_TINT:
+     case LUA_TNUMBER: {
+       size_t l;
+       lua_lock(L);  /* `luaV_tostring' may create a new string */
+@@ -426,6 +471,8 @@ LUA_API void lua_pushnil (lua_State *L) 
+ }
+ 
+ 
++/* 'lua_pushnumber()' may lose accuracy on integers, 'lua_pushinteger' will not.
++ */
+ LUA_API void lua_pushnumber (lua_State *L, lua_Number n) {
+   lua_lock(L);
+   setnvalue(L->top, n);
+@@ -434,12 +481,22 @@ LUA_API void lua_pushnumber (lua_State *
+ }
+ 
+ 
+-LUA_API void lua_pushinteger (lua_State *L, lua_Integer n) {
++LUA_API void lua_pushinteger (lua_State *L, lua_Integer i) {
++  lua_lock(L);
++  setivalue(L->top, i);
++  api_incr_top(L);
++  lua_unlock(L);
++}
++
++
++#ifdef LNUM_COMPLEX
++LUA_API void lua_pushcomplex (lua_State *L, lua_Complex v) {
+   lua_lock(L);
+-  setnvalue(L->top, cast_num(n));
++  setnvalue_complex( L->top, v );
+   api_incr_top(L);
+   lua_unlock(L);
+ }
++#endif
+ 
+ 
+ LUA_API void lua_pushlstring (lua_State *L, const char *s, size_t len) {
+@@ -569,7 +626,7 @@ LUA_API void lua_rawgeti (lua_State *L, 
+   lua_lock(L);
+   o = index2adr(L, idx);
+   api_check(L, ttistable(o));
+-  setobj2s(L, L->top, luaH_getnum(hvalue(o), n));
++  setobj2s(L, L->top, luaH_getint(hvalue(o), n));
+   api_incr_top(L);
+   lua_unlock(L);
+ }
+@@ -597,6 +654,9 @@ LUA_API int lua_getmetatable (lua_State 
+     case LUA_TUSERDATA:
+       mt = uvalue(obj)->metatable;
+       break;
++    case LUA_TINT:
++      mt = G(L)->mt[LUA_TNUMBER];
++      break;
+     default:
+       mt = G(L)->mt[ttype(obj)];
+       break;
+@@ -687,7 +747,7 @@ LUA_API void lua_rawseti (lua_State *L, 
+   api_checknelems(L, 1);
+   o = index2adr(L, idx);
+   api_check(L, ttistable(o));
+-  setobj2t(L, luaH_setnum(L, hvalue(o), n), L->top-1);
++  setobj2t(L, luaH_setint(L, hvalue(o), n), L->top-1);
+   luaC_barriert(L, hvalue(o), L->top-1);
+   L->top--;
+   lua_unlock(L);
+@@ -721,7 +781,7 @@ LUA_API int lua_setmetatable (lua_State 
+       break;
+     }
+     default: {
+-      G(L)->mt[ttype(obj)] = mt;
++      G(L)->mt[ttype_ext(obj)] = mt;
+       break;
+     }
+   }
+@@ -1085,3 +1145,32 @@ LUA_API const char *lua_setupvalue (lua_
+   return name;
+ }
+ 
++
++/* Help function for 'luaB_tonumber()', avoids multiple str->number
++ * conversions for Lua "tonumber()".
++ *
++ * Also pushes floating point numbers with integer value as integer, which
++ * can be used by 'tonumber()' in scripts to bring values back to integer
++ * realm.
++ *
++ * Note: The 'back to integer realm' is _not_ to affect string conversions:
++ * 'tonumber("4294967295.1")' should give a floating point value, although
++ * the value would be 4294967296 (and storable in int64 realm).
++ */
++int lua_pushvalue_as_number (lua_State *L, int idx)
++{
++  const TValue *o = index2adr(L, idx);
++  TValue tmp;
++  lua_Integer i;
++  if (ttisnumber(o)) {
++    if ( (!ttisint(o)) && tt_integer_valued(o,&i)) {
++      lua_pushinteger( L, i );
++      return 1;
++    }
++  } else if (!tonumber(o, &tmp)) {
++    return 0;
++  }
++  if (ttisint(o)) lua_pushinteger( L, ivalue(o) );
++  else lua_pushnumber( L, nvalue_fast(o) );
++  return 1;
++}
+--- a/src/lapi.h
++++ b/src/lapi.h
+@@ -13,4 +13,6 @@
+ 
+ LUAI_FUNC void luaA_pushobject (lua_State *L, const TValue *o);
+ 
++int lua_pushvalue_as_number (lua_State *L, int idx);
++
+ #endif
+--- a/src/lauxlib.c
++++ b/src/lauxlib.c
+@@ -23,7 +23,7 @@
+ #include "lua.h"
+ 
+ #include "lauxlib.h"
+-
++#include "llimits.h"
+ 
+ #define FREELIST_REF	0	/* free list of references */
+ 
+@@ -66,7 +66,7 @@ LUALIB_API int luaL_typerror (lua_State 
+ 
+ 
+ static void tag_error (lua_State *L, int narg, int tag) {
+-  luaL_typerror(L, narg, lua_typename(L, tag));
++  luaL_typerror(L, narg, tag==LUA_TINT ? "integer" : lua_typename(L, tag));
+ }
+ 
+ 
+@@ -188,8 +188,8 @@ LUALIB_API lua_Number luaL_optnumber (lu
+ 
+ LUALIB_API lua_Integer luaL_checkinteger (lua_State *L, int narg) {
+   lua_Integer d = lua_tointeger(L, narg);
+-  if (d == 0 && !lua_isnumber(L, narg))  /* avoid extra test when d is not 0 */
+-    tag_error(L, narg, LUA_TNUMBER);
++  if (d == 0 && !lua_isinteger(L, narg))  /* avoid extra test when d is not 0 */
++    tag_error(L, narg, LUA_TINT);
+   return d;
+ }
+ 
+@@ -200,6 +200,16 @@ LUALIB_API lua_Integer luaL_optinteger (
+ }
+ 
+ 
++#ifdef LNUM_COMPLEX
++LUALIB_API lua_Complex luaL_checkcomplex (lua_State *L, int narg) {
++  lua_Complex c = lua_tocomplex(L, narg);
++  if (c == 0 && !lua_isnumber(L, narg))  /* avoid extra test when c is not 0 */
++    tag_error(L, narg, LUA_TNUMBER);
++  return c;
++}
++#endif
++
++
+ LUALIB_API int luaL_getmetafield (lua_State *L, int obj, const char *event) {
+   if (!lua_getmetatable(L, obj))  /* no metatable? */
+     return 0;
+--- a/src/lauxlib.h
++++ b/src/lauxlib.h
+@@ -57,6 +57,12 @@ LUALIB_API lua_Number (luaL_optnumber) (
+ LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg);
+ LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg,
+                                           lua_Integer def);
++#define luaL_checkint32(L,narg) ((int)luaL_checkinteger(L,narg))
++#define luaL_optint32(L,narg,def) ((int)luaL_optinteger(L,narg,def))
++
++#ifdef LNUM_COMPLEX
++  LUALIB_API lua_Complex (luaL_checkcomplex) (lua_State *L, int narg);
++#endif
+ 
+ LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
+ LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t);
+--- a/src/lbaselib.c
++++ b/src/lbaselib.c
+@@ -18,7 +18,9 @@
+ 
+ #include "lauxlib.h"
+ #include "lualib.h"
+-
++#include "llimits.h"
++#include "lobject.h"
++#include "lapi.h"
+ 
+ 
+ 
+@@ -54,20 +56,25 @@ static int luaB_tonumber (lua_State *L) 
+   int base = luaL_optint(L, 2, 10);
+   if (base == 10) {  /* standard conversion */
+     luaL_checkany(L, 1);
+-    if (lua_isnumber(L, 1)) {
+-      lua_pushnumber(L, lua_tonumber(L, 1));
++    if (lua_isnumber(L, 1)) {       /* numeric string, or a number */
++      lua_pushvalue_as_number(L,1);     /* API extension (not to lose accuracy here) */
+       return 1;
+-    }
++	}
+   }
+   else {
+     const char *s1 = luaL_checkstring(L, 1);
+     char *s2;
+-    unsigned long n;
++    unsigned LUA_INTEGER n;
+     luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range");
+-    n = strtoul(s1, &s2, base);
++    n = lua_str2ul(s1, &s2, base);
+     if (s1 != s2) {  /* at least one valid digit? */
+       while (isspace((unsigned char)(*s2))) s2++;  /* skip trailing spaces */
+       if (*s2 == '\0') {  /* no invalid trailing characters? */
++	  
++		/* Push as number, there needs to be separate 'luaB_tointeger' for
++		 * when the caller wants to preserve the bits (matters if unsigned
++		 * values are used).
++		 */
+         lua_pushnumber(L, (lua_Number)n);
+         return 1;
+       }
+@@ -144,7 +151,7 @@ static int luaB_setfenv (lua_State *L) {
+   luaL_checktype(L, 2, LUA_TTABLE);
+   getfunc(L, 0);
+   lua_pushvalue(L, 2);
+-  if (lua_isnumber(L, 1) && lua_tonumber(L, 1) == 0) {
++  if (lua_isnumber(L, 1) && lua_tointeger(L, 1) == 0) {
+     /* change environment of current thread */
+     lua_pushthread(L);
+     lua_insert(L, -2);
+@@ -209,7 +216,7 @@ static int luaB_collectgarbage (lua_Stat
+       return 1;
+     }
+     default: {
+-      lua_pushnumber(L, res);
++      lua_pushinteger(L, res);
+       return 1;
+     }
+   }
+@@ -631,6 +638,8 @@ static void base_open (lua_State *L) {
+   luaL_register(L, "_G", base_funcs);
+   lua_pushliteral(L, LUA_VERSION);
+   lua_setglobal(L, "_VERSION");  /* set global _VERSION */
++  lua_pushliteral(L, LUA_LNUM);
++  lua_setglobal(L, "_LNUM");  /* "[complex] double|float|ldouble int32|int64" */
+   /* `ipairs' and `pairs' need auxiliary functions as upvalues */
+   auxopen(L, "ipairs", luaB_ipairs, ipairsaux);
+   auxopen(L, "pairs", luaB_pairs, luaB_next);
+--- a/src/lcode.c
++++ b/src/lcode.c
+@@ -22,13 +22,18 @@
+ #include "lopcodes.h"
+ #include "lparser.h"
+ #include "ltable.h"
++#include "lnum.h"
+ 
+ 
+ #define hasjumps(e)	((e)->t != (e)->f)
+ 
+-
+ static int isnumeral(expdesc *e) {
+-  return (e->k == VKNUM && e->t == NO_JUMP && e->f == NO_JUMP);
++  int ek=
++#ifdef LNUM_COMPLEX
++    (e->k == VKNUM2) ||
++#endif
++    (e->k == VKINT) || (e->k == VKNUM);
++  return (ek && e->t == NO_JUMP && e->f == NO_JUMP);
+ }
+ 
+ 
+@@ -231,12 +236,16 @@ static int addk (FuncState *fs, TValue *
+   TValue *idx = luaH_set(L, fs->h, k);
+   Proto *f = fs->f;
+   int oldsize = f->sizek;
+-  if (ttisnumber(idx)) {
+-    lua_assert(luaO_rawequalObj(&fs->f->k[cast_int(nvalue(idx))], v));
+-    return cast_int(nvalue(idx));
++  if (ttype(idx)==LUA_TNUMBER) {
++    luai_normalize(idx);
++    lua_assert( ttype(idx)==LUA_TINT );     /* had no fraction */
++  }
++  if (ttisint(idx)) {
++    lua_assert(luaO_rawequalObj(&fs->f->k[ivalue(idx)], v));
++    return cast_int(ivalue(idx));
+   }
+   else {  /* constant not found; create a new entry */
+-    setnvalue(idx, cast_num(fs->nk));
++    setivalue(idx, fs->nk);
+     luaM_growvector(L, f->k, fs->nk, f->sizek, TValue,
+                     MAXARG_Bx, "constant table overflow");
+     while (oldsize < f->sizek) setnilvalue(&f->k[oldsize++]);
+@@ -261,6 +270,21 @@ int luaK_numberK (FuncState *fs, lua_Num
+ }
+ 
+ 
++int luaK_integerK (FuncState *fs, lua_Integer r) {
++  TValue o;
++  setivalue(&o, r);
++  return addk(fs, &o, &o);
++}
++
++
++#ifdef LNUM_COMPLEX
++static int luaK_imagK (FuncState *fs, lua_Number r) {
++  TValue o;
++  setnvalue_complex(&o, r*I);
++  return addk(fs, &o, &o);
++}
++#endif
++
+ static int boolK (FuncState *fs, int b) {
+   TValue o;
+   setbvalue(&o, b);
+@@ -359,6 +383,16 @@ static void discharge2reg (FuncState *fs
+       luaK_codeABx(fs, OP_LOADK, reg, luaK_numberK(fs, e->u.nval));
+       break;
+     }
++    case VKINT: {
++      luaK_codeABx(fs, OP_LOADK, reg, luaK_integerK(fs, e->u.ival));
++      break;
++    }
++#ifdef LNUM_COMPLEX
++    case VKNUM2: {
++      luaK_codeABx(fs, OP_LOADK, reg, luaK_imagK(fs, e->u.nval));
++      break;
++    }
++#endif
+     case VRELOCABLE: {
+       Instruction *pc = &getcode(fs, e);
+       SETARG_A(*pc, reg);
+@@ -444,6 +478,10 @@ void luaK_exp2val (FuncState *fs, expdes
+ int luaK_exp2RK (FuncState *fs, expdesc *e) {
+   luaK_exp2val(fs, e);
+   switch (e->k) {
++#ifdef LNUM_COMPLEX
++    case VKNUM2:
++#endif
++    case VKINT:
+     case VKNUM:
+     case VTRUE:
+     case VFALSE:
+@@ -451,6 +489,10 @@ int luaK_exp2RK (FuncState *fs, expdesc 
+       if (fs->nk <= MAXINDEXRK) {  /* constant fit in RK operand? */
+         e->u.s.info = (e->k == VNIL)  ? nilK(fs) :
+                       (e->k == VKNUM) ? luaK_numberK(fs, e->u.nval) :
++                      (e->k == VKINT) ? luaK_integerK(fs, e->u.ival) :
++#ifdef LNUM_COMPLEX
++                      (e->k == VKNUM2) ? luaK_imagK(fs, e->u.nval) :
++#endif
+                                         boolK(fs, (e->k == VTRUE));
+         e->k = VK;
+         return RKASK(e->u.s.info);
+@@ -540,7 +582,10 @@ void luaK_goiftrue (FuncState *fs, expde
+   int pc;  /* pc of last jump */
+   luaK_dischargevars(fs, e);
+   switch (e->k) {
+-    case VK: case VKNUM: case VTRUE: {
++#ifdef LNUM_COMPLEX
++    case VKNUM2:
++#endif
++    case VKINT: case VK: case VKNUM: case VTRUE: {
+       pc = NO_JUMP;  /* always true; do nothing */
+       break;
+     }
+@@ -590,7 +635,10 @@ static void codenot (FuncState *fs, expd
+       e->k = VTRUE;
+       break;
+     }
+-    case VK: case VKNUM: case VTRUE: {
++#ifdef LNUM_COMPLEX
++    case VKNUM2:
++#endif
++    case VKINT: case VK: case VKNUM: case VTRUE: {
+       e->k = VFALSE;
+       break;
+     }
+@@ -626,25 +674,70 @@ void luaK_indexed (FuncState *fs, expdes
+ 
+ static int constfolding (OpCode op, expdesc *e1, expdesc *e2) {
+   lua_Number v1, v2, r;
++  int vkres= VKNUM;
+   if (!isnumeral(e1) || !isnumeral(e2)) return 0;
+-  v1 = e1->u.nval;
+-  v2 = e2->u.nval;
++
++  /* real and imaginary parts don't mix. */
++#ifdef LNUM_COMPLEX
++  if (e1->k == VKNUM2) {
++    if ((op != OP_UNM) && (e2->k != VKNUM2)) return 0; 
++    vkres= VKNUM2; }
++  else if (e2->k == VKNUM2) { return 0; }
++#endif
++  if ((e1->k == VKINT) && (e2->k == VKINT)) {
++    lua_Integer i1= e1->u.ival, i2= e2->u.ival;
++    lua_Integer rr;
++    int done= 0;
++    /* Integer/integer calculations (may end up producing floating point) */
++    switch (op) {
++      case OP_ADD: done= try_addint( &rr, i1, i2 ); break;
++      case OP_SUB: done= try_subint( &rr, i1, i2 ); break;
++      case OP_MUL: done= try_mulint( &rr, i1, i2 ); break;
++      case OP_DIV: done= try_divint( &rr, i1, i2 ); break;
++      case OP_MOD: done= try_modint( &rr, i1, i2 ); break;
++      case OP_POW: done= try_powint( &rr, i1, i2 ); break;
++      case OP_UNM: done= try_unmint( &rr, i1 ); break;
++      default:     done= 0; break;
++    }
++    if (done) {
++      e1->u.ival = rr;  /* remained within integer range */
++      return 1;
++    }
++  }
++  v1 = (e1->k == VKINT) ? ((lua_Number)e1->u.ival) : e1->u.nval;
++  v2 = (e2->k == VKINT) ? ((lua_Number)e2->u.ival) : e2->u.nval;
++
+   switch (op) {
+     case OP_ADD: r = luai_numadd(v1, v2); break;
+     case OP_SUB: r = luai_numsub(v1, v2); break;
+-    case OP_MUL: r = luai_nummul(v1, v2); break;
++    case OP_MUL: 
++#ifdef LNUM_COMPLEX
++        if (vkres==VKNUM2) return 0;    /* leave to runtime (could do here, but not worth it?) */
++#endif
++        r = luai_nummul(v1, v2); break;
+     case OP_DIV:
+       if (v2 == 0) return 0;  /* do not attempt to divide by 0 */
+-      r = luai_numdiv(v1, v2); break;
++#ifdef LNUM_COMPLEX
++        if (vkres==VKNUM2) return 0;    /* leave to runtime */
++#endif
++        r = luai_numdiv(v1, v2); break;
+     case OP_MOD:
+       if (v2 == 0) return 0;  /* do not attempt to divide by 0 */
++#ifdef LNUM_COMPLEX
++      if (vkres==VKNUM2) return 0;    /* leave to runtime */
++#endif
+       r = luai_nummod(v1, v2); break;
+-    case OP_POW: r = luai_numpow(v1, v2); break;
++    case OP_POW: 
++#ifdef LNUM_COMPLEX
++      if (vkres==VKNUM2) return 0;    /* leave to runtime */
++#endif
++      r = luai_numpow(v1, v2); break;
+     case OP_UNM: r = luai_numunm(v1); break;
+     case OP_LEN: return 0;  /* no constant folding for 'len' */
+     default: lua_assert(0); r = 0; break;
+   }
+   if (luai_numisnan(r)) return 0;  /* do not attempt to produce NaN */
++  e1->k = cast(expkind,vkres);
+   e1->u.nval = r;
+   return 1;
+ }
+@@ -688,7 +781,8 @@ static void codecomp (FuncState *fs, OpC
+ 
+ void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e) {
+   expdesc e2;
+-  e2.t = e2.f = NO_JUMP; e2.k = VKNUM; e2.u.nval = 0;
++  e2.t = e2.f = NO_JUMP; e2.k = VKINT; e2.u.ival = 0;
++
+   switch (op) {
+     case OPR_MINUS: {
+       if (!isnumeral(e))
+--- a/src/lcode.h
++++ b/src/lcode.h
+@@ -71,6 +71,6 @@ LUAI_FUNC void luaK_prefix (FuncState *f
+ LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
+ LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, expdesc *v2);
+ LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
+-
++LUAI_FUNC int luaK_integerK (FuncState *fs, lua_Integer r);
+ 
+ #endif
+--- a/src/ldebug.c
++++ b/src/ldebug.c
+@@ -183,7 +183,7 @@ static void collectvalidlines (lua_State
+     int *lineinfo = f->l.p->lineinfo;
+     int i;
+     for (i=0; i<f->l.p->sizelineinfo; i++)
+-      setbvalue(luaH_setnum(L, t, lineinfo[i]), 1);
++      setbvalue(luaH_setint(L, t, lineinfo[i]), 1);
+     sethvalue(L, L->top, t); 
+   }
+   incr_top(L);
+@@ -566,7 +566,7 @@ static int isinstack (CallInfo *ci, cons
+ 
+ void luaG_typeerror (lua_State *L, const TValue *o, const char *op) {
+   const char *name = NULL;
+-  const char *t = luaT_typenames[ttype(o)];
++  const char *t = luaT_typenames[ttype_ext(o)];
+   const char *kind = (isinstack(L->ci, o)) ?
+                          getobjname(L, L->ci, cast_int(o - L->base), &name) :
+                          NULL;
+@@ -594,8 +594,8 @@ void luaG_aritherror (lua_State *L, cons
+ 
+ 
+ int luaG_ordererror (lua_State *L, const TValue *p1, const TValue *p2) {
+-  const char *t1 = luaT_typenames[ttype(p1)];
+-  const char *t2 = luaT_typenames[ttype(p2)];
++  const char *t1 = luaT_typenames[ttype_ext(p1)];
++  const char *t2 = luaT_typenames[ttype_ext(p2)];
+   if (t1[2] == t2[2])
+     luaG_runerror(L, "attempt to compare two %s values", t1);
+   else
+--- a/src/ldo.c
++++ b/src/ldo.c
+@@ -220,9 +220,9 @@ static StkId adjust_varargs (lua_State *
+     luaD_checkstack(L, p->maxstacksize);
+     htab = luaH_new(L, nvar, 1);  /* create `arg' table */
+     for (i=0; i<nvar; i++)  /* put extra arguments into `arg' table */
+-      setobj2n(L, luaH_setnum(L, htab, i+1), L->top - nvar + i);
++      setobj2n(L, luaH_setint(L, htab, i+1), L->top - nvar + i);
+     /* store counter in field `n' */
+-    setnvalue(luaH_setstr(L, htab, luaS_newliteral(L, "n")), cast_num(nvar));
++    setivalue(luaH_setstr(L, htab, luaS_newliteral(L, "n")), nvar);
+   }
+ #endif
+   /* move fixed parameters to final position */
+--- a/src/ldump.c
++++ b/src/ldump.c
+@@ -52,6 +52,11 @@ static void DumpNumber(lua_Number x, Dum
+  DumpVar(x,D);
+ }
+ 
++static void DumpInteger(lua_Integer x, DumpState* D)
++{
++ DumpVar(x,D);
++}
++
+ static void DumpVector(const void* b, int n, size_t size, DumpState* D)
+ {
+  DumpInt(n,D);
+@@ -93,8 +98,11 @@ static void DumpConstants(const Proto* f
+ 	DumpChar(bvalue(o),D);
+ 	break;
+    case LUA_TNUMBER:
+-	DumpNumber(nvalue(o),D);
++	DumpNumber(nvalue_fast(o),D);
+ 	break;
++   case LUA_TINT:
++	DumpInteger(ivalue(o),D);
++    break;
+    case LUA_TSTRING:
+ 	DumpString(rawtsvalue(o),D);
+ 	break;
+--- a/src/liolib.c
++++ b/src/liolib.c
+@@ -9,6 +9,7 @@
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
++#include <ctype.h>
+ 
+ #define liolib_c
+ #define LUA_LIB
+@@ -18,7 +19,8 @@
+ #include "lauxlib.h"
+ #include "lualib.h"
+ 
+-
++#include "lnum.h"
++#include "llex.h"
+ 
+ #define IO_INPUT	1
+ #define IO_OUTPUT	2
+@@ -269,6 +271,13 @@ static int io_lines (lua_State *L) {
+ ** =======================================================
+ */
+ 
++/*
++* Many problems if we intend the same 'n' format specifier (see 'file:read()')
++* to work for both FP and integer numbers, without losing their accuracy. So
++* we don't. 'n' reads numbers as floating points, 'i' as integers. Old code
++* remains valid, but won't provide full integer accuracy (this only matters
++* with float FP and/or 64-bit integers).
++*/
+ 
+ static int read_number (lua_State *L, FILE *f) {
+   lua_Number d;
+@@ -282,6 +291,43 @@ static int read_number (lua_State *L, FI
+   }
+ }
+ 
++static int read_integer (lua_State *L, FILE *f) {
++  lua_Integer i;
++  if (fscanf(f, LUA_INTEGER_SCAN, &i) == 1) {
++    lua_pushinteger(L, i);
++    return 1;
++  }
++  else return 0;  /* read fails */
++}
++
++#ifdef LNUM_COMPLEX
++static int read_complex (lua_State *L, FILE *f) {
++  /* NNN / NNNi / NNN+MMMi / NNN-MMMi */
++  lua_Number a,b;
++  if (fscanf(f, LUA_NUMBER_SCAN, &a) == 1) {
++    int c=fgetc(f);
++    switch(c) {
++        case 'i':
++            lua_pushcomplex(L, a*I);
++            return 1;
++        case '+':
++        case '-':
++            /* "i" is consumed if at the end; just 'NNN+MMM' will most likely
++             * behave as if "i" was there? (TBD: test)
++             */
++            if (fscanf(f, LUA_NUMBER_SCAN "i", &b) == 1) {
++                lua_pushcomplex(L, a+ (c=='+' ? b:-b)*I);
++                return 1;
++            }
++    }
++    ungetc( c,f );
++    lua_pushnumber(L,a);  /*real part only*/
++    return 1;
++  }
++  return 0;  /* read fails */
++}
++#endif
++
+ 
+ static int test_eof (lua_State *L, FILE *f) {
+   int c = getc(f);
+@@ -355,6 +401,14 @@ static int g_read (lua_State *L, FILE *f
+           case 'n':  /* number */
+             success = read_number(L, f);
+             break;
++          case 'i':  /* integer (full accuracy) */
++            success = read_integer(L, f);
++            break;
++#ifdef LNUM_COMPLEX
++          case 'c':  /* complex */
++            success = read_complex(L, f);
++            break;
++#endif
+           case 'l':  /* line */
+             success = read_line(L, f);
+             break;
+@@ -415,9 +469,10 @@ static int g_write (lua_State *L, FILE *
+   int status = 1;
+   for (; nargs--; arg++) {
+     if (lua_type(L, arg) == LUA_TNUMBER) {
+-      /* optimization: could be done exactly as for strings */
+-      status = status &&
+-          fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg)) > 0;
++      if (lua_isinteger(L,arg))
++          status = status && fprintf(f, LUA_INTEGER_FMT, lua_tointeger(L, arg)) > 0;
++      else
++          status = status && fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg)) > 0;
+     }
+     else {
+       size_t l;
+@@ -460,7 +515,7 @@ static int f_setvbuf (lua_State *L) {
+   static const char *const modenames[] = {"no", "full", "line", NULL};
+   FILE *f = tofile(L);
+   int op = luaL_checkoption(L, 2, NULL, modenames);
+-  lua_Integer sz = luaL_optinteger(L, 3, LUAL_BUFFERSIZE);
++  size_t sz = luaL_optint32(L, 3, LUAL_BUFFERSIZE);
+   int res = setvbuf(f, NULL, mode[op], sz);
+   return pushresult(L, res == 0, NULL);
+ }
+--- a/src/llex.c
++++ b/src/llex.c
+@@ -22,6 +22,7 @@
+ #include "lstring.h"
+ #include "ltable.h"
+ #include "lzio.h"
++#include "lnum.h"
+ 
+ 
+ 
+@@ -34,13 +35,17 @@
+ 
+ 
+ /* ORDER RESERVED */
+-const char *const luaX_tokens [] = {
++static const char *const luaX_tokens [] = {
+     "and", "break", "do", "else", "elseif",
+     "end", "false", "for", "function", "if",
+     "in", "local", "nil", "not", "or", "repeat",
+     "return", "then", "true", "until", "while",
+     "..", "...", "==", ">=", "<=", "~=",
+     "<number>", "<name>", "<string>", "<eof>",
++    "<integer>",
++#ifdef LNUM_COMPLEX
++    "<number2>",
++#endif
+     NULL
+ };
+ 
+@@ -90,7 +95,11 @@ static const char *txtToken (LexState *l
+   switch (token) {
+     case TK_NAME:
+     case TK_STRING:
++    case TK_INT:
+     case TK_NUMBER:
++#ifdef LNUM_COMPLEX
++    case TK_NUMBER2:
++#endif
+       save(ls, '\0');
+       return luaZ_buffer(ls->buff);
+     default:
+@@ -175,23 +184,27 @@ static void buffreplace (LexState *ls, c
+     if (p[n] == from) p[n] = to;
+ }
+ 
+-
+-static void trydecpoint (LexState *ls, SemInfo *seminfo) {
++/* TK_NUMBER (/ TK_NUMBER2) */
++static int trydecpoint (LexState *ls, SemInfo *seminfo) {
+   /* format error: try to update decimal point separator */
+   struct lconv *cv = localeconv();
+   char old = ls->decpoint;
++  int ret;
+   ls->decpoint = (cv ? cv->decimal_point[0] : '.');
+   buffreplace(ls, old, ls->decpoint);  /* try updated decimal separator */
+-  if (!luaO_str2d(luaZ_buffer(ls->buff), &seminfo->r)) {
++  ret= luaO_str2d(luaZ_buffer(ls->buff), &seminfo->r, NULL);
++  if (!ret) {
+     /* format error with correct decimal point: no more options */
+     buffreplace(ls, ls->decpoint, '.');  /* undo change (for error message) */
+     luaX_lexerror(ls, "malformed number", TK_NUMBER);
+   }
++  return ret;
+ }
+ 
+ 
+-/* LUA_NUMBER */
+-static void read_numeral (LexState *ls, SemInfo *seminfo) {
++/* TK_NUMBER / TK_INT (/TK_NUMBER2) */
++static int read_numeral (LexState *ls, SemInfo *seminfo) {
++  int ret;
+   lua_assert(isdigit(ls->current));
+   do {
+     save_and_next(ls);
+@@ -202,8 +215,9 @@ static void read_numeral (LexState *ls, 
+     save_and_next(ls);
+   save(ls, '\0');
+   buffreplace(ls, '.', ls->decpoint);  /* follow locale for decimal point */
+-  if (!luaO_str2d(luaZ_buffer(ls->buff), &seminfo->r))  /* format error? */
+-    trydecpoint(ls, seminfo); /* try to update decimal point separator */
++  ret= luaO_str2d(luaZ_buffer(ls->buff), &seminfo->r, &seminfo->i );
++  if (!ret) return trydecpoint(ls, seminfo); /* try to update decimal point separator */
++  return ret;
+ }
+ 
+ 
+@@ -331,6 +345,7 @@ static void read_string (LexState *ls, i
+ }
+ 
+ 
++/* char / TK_* */
+ static int llex (LexState *ls, SemInfo *seminfo) {
+   luaZ_resetbuffer(ls->buff);
+   for (;;) {
+@@ -402,8 +417,7 @@ static int llex (LexState *ls, SemInfo *
+         }
+         else if (!isdigit(ls->current)) return '.';
+         else {
+-          read_numeral(ls, seminfo);
+-          return TK_NUMBER;
++          return read_numeral(ls, seminfo);
+         }
+       }
+       case EOZ: {
+@@ -416,8 +430,7 @@ static int llex (LexState *ls, SemInfo *
+           continue;
+         }
+         else if (isdigit(ls->current)) {
+-          read_numeral(ls, seminfo);
+-          return TK_NUMBER;
++          return read_numeral(ls, seminfo);
+         }
+         else if (isalpha(ls->current) || ls->current == '_') {
+           /* identifier or reserved word */
+--- a/src/llex.h
++++ b/src/llex.h
+@@ -29,19 +29,22 @@ enum RESERVED {
+   TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
+   /* other terminal symbols */
+   TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, TK_NUMBER,
+-  TK_NAME, TK_STRING, TK_EOS
++  TK_NAME, TK_STRING, TK_EOS, TK_INT
++#ifdef LNUM_COMPLEX
++  , TK_NUMBER2   /* imaginary constants: Ni */ 
++#endif
+ };
+ 
+ /* number of reserved words */
+ #define NUM_RESERVED	(cast(int, TK_WHILE-FIRST_RESERVED+1))
+ 
+ 
+-/* array with token `names' */
+-LUAI_DATA const char *const luaX_tokens [];
+-
+-
++/* SemInfo is a local data structure of 'llex.c', used for carrying a string
++ * or a number. A separate token (TK_*) will tell, how to interpret the data.
++ */      
+ typedef union {
+   lua_Number r;
++  lua_Integer i;
+   TString *ts;
+ } SemInfo;  /* semantics information */
+ 
+--- a/src/llimits.h
++++ b/src/llimits.h
+@@ -49,6 +49,7 @@ typedef LUAI_USER_ALIGNMENT_T L_Umaxalig
+ 
+ /* result of a `usual argument conversion' over lua_Number */
+ typedef LUAI_UACNUMBER l_uacNumber;
++typedef LUAI_UACINTEGER l_uacInteger;
+ 
+ 
+ /* internal assertions for in-house debugging */
+@@ -80,7 +81,6 @@ typedef LUAI_UACNUMBER l_uacNumber;
+ #define cast_int(i)	cast(int, (i))
+ 
+ 
+-
+ /*
+ ** type for virtual-machine instructions
+ ** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
+--- a/src/lmathlib.c
++++ b/src/lmathlib.c
+@@ -4,7 +4,6 @@
+ ** See Copyright Notice in lua.h
+ */
+ 
+-
+ #include <stdlib.h>
+ #include <math.h>
+ 
+@@ -16,113 +15,210 @@
+ #include "lauxlib.h"
+ #include "lualib.h"
+ 
++/* 'luai_vectpow()' as a replacement for 'cpow()'. Defined in the header; we
++ * don't intrude the code libs internal functions.
++ */
++#ifdef LNUM_COMPLEX
++# include "lnum.h"    
++#endif
+ 
+ #undef PI
+-#define PI (3.14159265358979323846)
+-#define RADIANS_PER_DEGREE (PI/180.0)
+-
++#ifdef LNUM_FLOAT
++# define PI (3.14159265358979323846F)
++#elif defined(M_PI)
++# define PI M_PI
++#else
++# define PI (3.14159265358979323846264338327950288)
++#endif
++#define RADIANS_PER_DEGREE (PI/180)
+ 
++#undef HUGE
++#ifdef LNUM_FLOAT
++# define HUGE HUGE_VALF
++#elif defined(LNUM_LDOUBLE)
++# define HUGE HUGE_VALL
++#else
++# define HUGE HUGE_VAL
++#endif
+ 
+ static int math_abs (lua_State *L) {
+-  lua_pushnumber(L, fabs(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushnumber(L, _LF(cabs) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(fabs) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_sin (lua_State *L) {
+-  lua_pushnumber(L, sin(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(csin) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(sin) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_sinh (lua_State *L) {
+-  lua_pushnumber(L, sinh(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(csinh) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(sinh) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_cos (lua_State *L) {
+-  lua_pushnumber(L, cos(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(ccos) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(cos) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_cosh (lua_State *L) {
+-  lua_pushnumber(L, cosh(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(ccosh) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(cosh) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_tan (lua_State *L) {
+-  lua_pushnumber(L, tan(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(ctan) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(tan) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_tanh (lua_State *L) {
+-  lua_pushnumber(L, tanh(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(ctanh) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(tanh) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_asin (lua_State *L) {
+-  lua_pushnumber(L, asin(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(casin) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(asin) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_acos (lua_State *L) {
+-  lua_pushnumber(L, acos(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(cacos) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(acos) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_atan (lua_State *L) {
+-  lua_pushnumber(L, atan(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(catan) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(atan) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_atan2 (lua_State *L) {
+-  lua_pushnumber(L, atan2(luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
++  /* scalars only */
++  lua_pushnumber(L, _LF(atan2) (luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
+   return 1;
+ }
+ 
+ static int math_ceil (lua_State *L) {
+-  lua_pushnumber(L, ceil(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_Complex v= luaL_checkcomplex(L, 1);
++  lua_pushcomplex(L, _LF(ceil) (_LF(creal)(v)) + _LF(ceil) (_LF(cimag)(v))*I);
++#else
++  lua_pushnumber(L, _LF(ceil) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_floor (lua_State *L) {
+-  lua_pushnumber(L, floor(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_Complex v= luaL_checkcomplex(L, 1);
++  lua_pushcomplex(L, _LF(floor) (_LF(creal)(v)) + _LF(floor) (_LF(cimag)(v))*I);
++#else
++  lua_pushnumber(L, _LF(floor) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+-static int math_fmod (lua_State *L) {
+-  lua_pushnumber(L, fmod(luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
++static int math_fmod (lua_State *L) {  
++  /* scalars only */
++  lua_pushnumber(L, _LF(fmod) (luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
+   return 1;
+ }
+ 
+ static int math_modf (lua_State *L) {
+-  double ip;
+-  double fp = modf(luaL_checknumber(L, 1), &ip);
++  /* scalars only */
++  lua_Number ip;
++  lua_Number fp = _LF(modf) (luaL_checknumber(L, 1), &ip);
+   lua_pushnumber(L, ip);
+   lua_pushnumber(L, fp);
+   return 2;
+ }
+ 
+ static int math_sqrt (lua_State *L) {
+-  lua_pushnumber(L, sqrt(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(csqrt) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(sqrt) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_pow (lua_State *L) {
+-  lua_pushnumber(L, pow(luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
++#ifdef LNUM_COMPLEX
++  /* C99 'cpow' gives somewhat inaccurate results (i.e. (-1)^2 = -1+1.2246467991474e-16i). 
++  * 'luai_vectpow' smoothens such, reusing it is the reason we need to #include "lnum.h".
++  */
++  lua_pushcomplex(L, luai_vectpow(luaL_checkcomplex(L,1), luaL_checkcomplex(L,2)));
++#else
++  lua_pushnumber(L, _LF(pow) (luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
++#endif
+   return 1;
+ }
+ 
+ static int math_log (lua_State *L) {
+-  lua_pushnumber(L, log(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(clog) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(log) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_log10 (lua_State *L) {
+-  lua_pushnumber(L, log10(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  /* Not in standard <complex.h> , but easy to calculate: log_a(x) = log_b(x) / log_b(a) 
++  */
++  lua_pushcomplex(L, _LF(clog) (luaL_checkcomplex(L,1)) / _LF(log) (10));
++#else
++  lua_pushnumber(L, _LF(log10) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+ static int math_exp (lua_State *L) {
+-  lua_pushnumber(L, exp(luaL_checknumber(L, 1)));
++#ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(cexp) (luaL_checkcomplex(L,1)));
++#else
++  lua_pushnumber(L, _LF(exp) (luaL_checknumber(L, 1)));
++#endif
+   return 1;
+ }
+ 
+@@ -138,19 +234,20 @@ static int math_rad (lua_State *L) {
+ 
+ static int math_frexp (lua_State *L) {
+   int e;
+-  lua_pushnumber(L, frexp(luaL_checknumber(L, 1), &e));
++  lua_pushnumber(L, _LF(frexp) (luaL_checknumber(L, 1), &e));
+   lua_pushinteger(L, e);
+   return 2;
+ }
+ 
+ static int math_ldexp (lua_State *L) {
+-  lua_pushnumber(L, ldexp(luaL_checknumber(L, 1), luaL_checkint(L, 2)));
++  lua_pushnumber(L, _LF(ldexp) (luaL_checknumber(L, 1), luaL_checkint(L, 2)));
+   return 1;
+ }
+ 
+ 
+ 
+ static int math_min (lua_State *L) {
++  /* scalars only */
+   int n = lua_gettop(L);  /* number of arguments */
+   lua_Number dmin = luaL_checknumber(L, 1);
+   int i;
+@@ -165,6 +262,7 @@ static int math_min (lua_State *L) {
+ 
+ 
+ static int math_max (lua_State *L) {
++  /* scalars only */
+   int n = lua_gettop(L);  /* number of arguments */
+   lua_Number dmax = luaL_checknumber(L, 1);
+   int i;
+@@ -182,25 +280,20 @@ static int math_random (lua_State *L) {
+   /* the `%' avoids the (rare) case of r==1, and is needed also because on
+      some systems (SunOS!) `rand()' may return a value larger than RAND_MAX */
+   lua_Number r = (lua_Number)(rand()%RAND_MAX) / (lua_Number)RAND_MAX;
+-  switch (lua_gettop(L)) {  /* check number of arguments */
+-    case 0: {  /* no arguments */
+-      lua_pushnumber(L, r);  /* Number between 0 and 1 */
+-      break;
+-    }
+-    case 1: {  /* only upper limit */
+-      int u = luaL_checkint(L, 1);
+-      luaL_argcheck(L, 1<=u, 1, "interval is empty");
+-      lua_pushnumber(L, floor(r*u)+1);  /* int between 1 and `u' */
+-      break;
+-    }
+-    case 2: {  /* lower and upper limits */
+-      int l = luaL_checkint(L, 1);
+-      int u = luaL_checkint(L, 2);
+-      luaL_argcheck(L, l<=u, 2, "interval is empty");
+-      lua_pushnumber(L, floor(r*(u-l+1))+l);  /* int between `l' and `u' */
+-      break;
+-    }
+-    default: return luaL_error(L, "wrong number of arguments");
++  int n= lua_gettop(L);  /* number of arguments */
++  if (n==0) {	/* no arguments: range [0,1) */
++    lua_pushnumber(L, r);
++  } else if (n<=2) {	/* int range [1,u] or [l,u] */
++    int l= n==1 ? 1 : luaL_checkint(L, 1);
++    int u = luaL_checkint(L, n);
++    int tmp;
++    lua_Number d;
++    luaL_argcheck(L, l<=u, n, "interval is empty");
++    d= _LF(floor)(r*(u-l+1));
++    lua_number2int(tmp,d);
++    lua_pushinteger(L, l+tmp);
++  } else {
++    return luaL_error(L, "wrong number of arguments");
+   }
+   return 1;
+ }
+@@ -211,6 +304,66 @@ static int math_randomseed (lua_State *L
+   return 0;
+ }
+ 
++/* 
++* Lua 5.1 does not have acosh, asinh, atanh for scalars (not ANSI C)
++*/
++#if __STDC_VERSION__ >= 199901L
++static int math_acosh (lua_State *L) {
++# ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(cacosh) (luaL_checkcomplex(L,1)));
++# else
++  lua_pushnumber(L, _LF(acosh) (luaL_checknumber(L,1)));
++# endif
++  return 1;
++}
++static int math_asinh (lua_State *L) {
++# ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(casinh) (luaL_checkcomplex(L,1)));
++# else
++  lua_pushnumber(L, _LF(asinh) (luaL_checknumber(L,1)));
++# endif
++  return 1;
++}
++static int math_atanh (lua_State *L) {
++# ifdef LNUM_COMPLEX
++  lua_pushcomplex(L, _LF(catanh) (luaL_checkcomplex(L,1)));
++# else
++  lua_pushnumber(L, _LF(atanh) (luaL_checknumber(L,1)));
++# endif
++  return 1;
++}
++#endif
++
++/* 
++ * C99 complex functions, not covered above.
++*/
++#ifdef LNUM_COMPLEX
++static int math_arg (lua_State *L) {
++  lua_pushnumber(L, _LF(carg) (luaL_checkcomplex(L,1)));
++  return 1;
++}
++
++static int math_imag (lua_State *L) {
++  lua_pushnumber(L, _LF(cimag) (luaL_checkcomplex(L,1)));
++  return 1;
++}
++
++static int math_real (lua_State *L) {
++  lua_pushnumber(L, _LF(creal) (luaL_checkcomplex(L,1)));
++  return 1;
++}
++
++static int math_conj (lua_State *L) {
++  lua_pushcomplex(L, _LF(conj) (luaL_checkcomplex(L,1)));
++  return 1;
++}
++
++static int math_proj (lua_State *L) {
++  lua_pushcomplex(L, _LF(cproj) (luaL_checkcomplex(L,1)));
++  return 1;
++}
++#endif
++
+ 
+ static const luaL_Reg mathlib[] = {
+   {"abs",   math_abs},
+@@ -241,6 +394,18 @@ static const luaL_Reg mathlib[] = {
+   {"sqrt",  math_sqrt},
+   {"tanh",   math_tanh},
+   {"tan",   math_tan},
++#if __STDC_VERSION__ >= 199901L
++  {"acosh",  math_acosh},
++  {"asinh",  math_asinh},
++  {"atanh",  math_atanh},
++#endif
++#ifdef LNUM_COMPLEX
++  {"arg",   math_arg},
++  {"imag",  math_imag},
++  {"real",  math_real},
++  {"conj",  math_conj},
++  {"proj",  math_proj},
++#endif
+   {NULL, NULL}
+ };
+ 
+@@ -252,8 +417,10 @@ LUALIB_API int luaopen_math (lua_State *
+   luaL_register(L, LUA_MATHLIBNAME, mathlib);
+   lua_pushnumber(L, PI);
+   lua_setfield(L, -2, "pi");
+-  lua_pushnumber(L, HUGE_VAL);
++  lua_pushnumber(L, HUGE);
+   lua_setfield(L, -2, "huge");
++  lua_pushinteger(L, LUA_INTEGER_MAX );
++  lua_setfield(L, -2, "hugeint");
+ #if defined(LUA_COMPAT_MOD)
+   lua_getfield(L, -1, "fmod");
+   lua_setfield(L, -2, "mod");
+--- /dev/null
++++ b/src/lnum.c
+@@ -0,0 +1,312 @@
++/*
++** $Id: lnum.c,v ... $
++** Internal number model
++** See Copyright Notice in lua.h
++*/
++
++#include <stdlib.h>
++#include <math.h>
++#include <ctype.h>
++#include <string.h>
++#include <stdio.h>
++#include <errno.h>
++
++#define lnum_c
++#define LUA_CORE
++
++#include "lua.h"
++#include "llex.h"
++#include "lnum.h"
++
++/*
++** lua_real2str converts a (non-complex) number to a string.
++** lua_str2real converts a string to a (non-complex) number.
++*/
++#define lua_real2str(s,n)  sprintf((s), LUA_NUMBER_FMT, (n))
++
++/*
++* Note: Only 'strtod()' is part of ANSI C; others are C99 and
++* may need '--std=c99' compiler setting (at least on Ubuntu 7.10).
++* 
++* Visual C++ 2008 Express does not have 'strtof()', nor 'strtold()'.
++* References to '_strtold()' exist but don't compile. It seems best
++* to leave Windows users with DOUBLE only (or compile with MinGW).
++*
++* In practise, using '(long double)strtod' is a risky thing, since
++* it will cause accuracy loss in reading in numbers, and such losses
++* will pile up in later processing. Get a real 'strtold()' or don't
++* use that mode at all.
++*/
++#ifdef LNUM_DOUBLE
++# define lua_str2real	strtod
++#elif defined(LNUM_FLOAT)
++# define lua_str2real	strtof
++#elif defined(LNUM_LDOUBLE)
++# define lua_str2real	strtold
++#endif
++
++#define lua_integer2str(s,v) sprintf((s), LUA_INTEGER_FMT, (v))
++
++/* 's' is expected to be LUAI_MAXNUMBER2STR long (enough for any number)
++*/
++void luaO_num2buf( char *s, const TValue *o )
++{
++  lua_Number n;
++  lua_assert( ttisnumber(o) );
++
++  /* Reason to handle integers differently is not only speed, but accuracy as
++   * well. We want to make any integer tostring() without roundings, at all.
++   */
++  if (ttisint(o)) {
++    lua_integer2str( s, ivalue(o) );
++    return;
++  }
++  n= nvalue_fast(o);
++  lua_real2str(s, n);
++
++#ifdef LNUM_COMPLEX
++  lua_Number n2= nvalue_img_fast(o);
++  if (n2!=0) {   /* Postfix with +-Ni */
++      int re0= (n == 0);
++      char *s2= re0 ? s : strchr(s,'\0'); 
++      if ((!re0) && (n2>0)) *s2++= '+';
++      lua_real2str( s2, n2 );
++      strcat(s2,"i");
++  }
++#endif
++}
++
++/*
++* If a LUA_TNUMBER has integer value, give it.
++*/
++int /*bool*/ tt_integer_valued( const TValue *o, lua_Integer *ref ) {
++  lua_Number d;
++  lua_Integer i;
++
++  lua_assert( ttype(o)==LUA_TNUMBER );
++  lua_assert( ref );
++#ifdef LNUM_COMPLEX
++  if (nvalue_img_fast(o)!=0) return 0;
++#endif
++  d= nvalue_fast(o);
++  lua_number2integer(i, d);
++  if (cast_num(i) == d) {
++    *ref= i; return 1;
++  }
++  return 0;
++}
++
++/* 
++ * Lua 5.1.3 (using 'strtod()') allows 0x+hex but not 0+octal. This is good,
++ * and we should NOT use 'autobase' 0 with 'strtoul[l]()' for this reason.
++ *
++ * Lua 5.1.3 allows '0x...' numbers to overflow and lose precision; this is not
++ * good. On Visual C++ 2008, 'strtod()' does not even take them in. Better to
++ * require hex values to fit 'lua_Integer' or give an error that they don't?
++ *
++ * Full hex range (0 .. 0xff..ff) is stored as integers, not to lose any bits.
++ * Numerical value of 0xff..ff will be -1, if used in calculations.
++ * 
++ * Returns: TK_INT for a valid integer, '*endptr_ref' updated
++ *          TK_NUMBER for seemingly numeric, to be parsed as floating point
++ *          0 for bad characters, not a number (or '0x' out of range)
++ */
++static int luaO_str2i (const char *s, lua_Integer *res, char **endptr_ref) {
++  char *endptr;
++  /* 'v' gets ULONG_MAX on possible overflow (which is > LUA_INTEGER_MAX);
++   * we don't have to check 'errno' here.
++   */
++  unsigned LUA_INTEGER v= lua_str2ul(s, &endptr, 10);
++  if (endptr == s) return 0;  /* nothing numeric */
++  if (v==0 && *endptr=='x') {
++    errno= 0;   /* needs to be set, 'strtoul[l]' does not clear it */
++    v= lua_str2ul(endptr+1, &endptr, 16);  /* retry as hex, unsigned range */
++    if (errno==ERANGE) {   /* clamped to 0xff..ff */
++#if (defined(LNUM_INT32) && !defined(LNUM_FLOAT)) || defined(LNUM_LDOUBLE)
++      return TK_NUMBER; /* Allow to be read as floating point (has more integer range) */
++#else
++      return 0;  /* Reject the number */
++#endif
++    }
++  } else if ((v > LUA_INTEGER_MAX) || (*endptr && (!isspace(*endptr)))) {
++    return TK_NUMBER;	/* not in signed range, or has '.', 'e' etc. trailing */
++  }
++  *res= (lua_Integer)v;
++  *endptr_ref= endptr;
++  return TK_INT;
++}
++
++/* 0 / TK_NUMBER / TK_INT (/ TK_NUMBER2) */
++int luaO_str2d (const char *s, lua_Number *res_n, lua_Integer *res_i) {
++  char *endptr;
++  int ret= TK_NUMBER;
++  /* Check integers first, if caller is allowing. 
++   * If 'res2'==NULL, they're only looking for floating point. 
++   */
++  if (res_i) {
++    ret= luaO_str2i(s,res_i,&endptr);
++    if (ret==0) return 0;
++  }
++  if (ret==TK_NUMBER) {
++    lua_assert(res_n);
++    /* Note: Visual C++ 2008 Express 'strtod()' does not read in "0x..."
++     *       numbers; it will read '0' and spit 'x' as endptr.
++     *       This means hex constants not fitting in 'lua_Integer' won't 
++     *       be read in at all. What to do?
++     */
++    *res_n = lua_str2real(s, &endptr);
++    if (endptr == s) return 0;  /* conversion failed */
++    /* Visual C++ 2008 'strtod()' does not allow "0x..." input. */
++#if defined(_MSC_VER) && !defined(LNUM_FLOAT) && !defined(LNUM_INT64)
++    if (*res_n==0 && *endptr=='x') {
++      /* Hex constant too big for 'lua_Integer' but that could fit in 'lua_Number'
++       * integer bits 
++       */
++      unsigned __int64 v= _strtoui64( s, &endptr, 16 );
++      /* We just let > 64 bit values be clamped to _UI64_MAX (MSDN does not say 'errno'==ERANGE would be set) */
++      *res_n= cast_num(v);
++      if (*res_n != v) return 0;    /* Would have lost accuracy */
++    }
++#endif
++#ifdef LNUM_COMPLEX
++    if (*endptr == 'i') { endptr++; ret= TK_NUMBER2; }
++#endif
++  }
++  if (*endptr) {
++    while (isspace(cast(unsigned char, *endptr))) endptr++;
++    if (*endptr) return 0;  /* invalid trail */
++  }
++  return ret;
++}
++
++
++/* Functions for finding out, when integer operations remain in range
++ * (and doing them).
++ */
++int try_addint( lua_Integer *r, lua_Integer ib, lua_Integer ic ) {
++  lua_Integer v= ib+ic; /* may overflow */
++  if (ib>0 && ic>0)      { if (v < 0) return 0; /*overflow, use floats*/ }
++  else if (ib<0 && ic<0) { if (v >= 0) return 0; }
++  *r= v;
++  return 1;
++}
++
++int try_subint( lua_Integer *r, lua_Integer ib, lua_Integer ic ) {
++  lua_Integer v= ib-ic; /* may overflow */
++  if (ib>=0 && ic<0)     { if (v < 0) return 0; /*overflow, use floats*/ }
++  else if (ib<0 && ic>0) { if (v >= 0) return 0; }
++  *r= v;
++  return 1;
++}
++
++int try_mulint( lua_Integer *r, lua_Integer ib, lua_Integer ic ) {
++  if (ib!=LUA_INTEGER_MIN && ic!=LUA_INTEGER_MIN) {
++    lua_Integer b= luai_abs(ib), c= luai_abs(ic);
++    if ( (ib==0) || (LUA_INTEGER_MAX/b >= c) ) {
++      *r= ib*ic;  /* no overflow */
++      return 1;
++    }
++  } else if (ib==0 || ic==0) {
++    *r= 0; return 1;
++  }
++
++  /* Result can be LUA_INTEGER_MIN; if it is, calculating it using floating 
++   * point will not cause accuracy loss.
++   */
++  if ( luai_nummul( cast_num(ib), cast_num(ic) ) == LUA_INTEGER_MIN ) {
++    *r= LUA_INTEGER_MIN;
++    return 1;
++  }
++  return 0;
++}
++
++int try_divint( lua_Integer *r, lua_Integer ib, lua_Integer ic ) {
++  /* N/0: leave to float side, to give an error
++  */
++  if (ic==0) return 0;
++
++  /* N/LUA_INTEGER_MIN: always non-integer results, or 0 or +1
++  */
++  if (ic==LUA_INTEGER_MIN) {
++    if (ib==LUA_INTEGER_MIN) { *r=1; return 1; }
++    if (ib==0) { *r=0; return 1; }
++
++  /* LUA_INTEGER_MIN (-2^31|63)/N: calculate using float side (either the division 
++   *    causes non-integer results, or there is no accuracy loss in int->fp->int
++   *    conversions (N=2,4,8,..,256 and N=2^30,2^29,..2^23).
++   */
++  } else if (ib==LUA_INTEGER_MIN) {
++    lua_Number d= luai_numdiv( cast_num(LUA_INTEGER_MIN), cast_num(ic) );
++    lua_Integer i; lua_number2integer(i,d);
++    if (cast_num(i)==d) { *r= i; return 1; }
++  
++  } else {
++    /* Note: We _can_ use ANSI C mod here, even on negative values, since
++     *       we only test for == 0 (the sign would be implementation dependent).
++     */
++     if (ib%ic == 0) { *r= ib/ic; return 1; }
++  }
++
++  return 0;
++}
++
++int try_modint( lua_Integer *r, lua_Integer ib, lua_Integer ic ) {
++  if (ic!=0) {
++    /* ANSI C can be trusted when b%c==0, or when values are non-negative. 
++     * b - (floor(b/c) * c)
++     *   -->
++     * + +: b - (b/c) * c (b % c can be used)
++     * - -: b - (b/c) * c (b % c could work, but not defined by ANSI C)
++     * 0 -: b - (b/c) * c (=0, b % c could work, but not defined by ANSI C)
++     * - +: b - (b/c-1) * c (when b!=-c)
++     * + -: b - (b/c-1) * c (when b!=-c)
++     *
++     * o MIN%MIN ends up 0, via overflow in calcs but that does not matter.
++     * o MIN%MAX ends up MAX-1 (and other such numbers), also after overflow,
++     *   but that does not matter, results do.
++     */
++    lua_Integer v= ib % ic;
++    if ( v!=0 && (ib<0 || ic<0) ) {
++      v= ib - ((ib/ic) - ((ib<=0 && ic<0) ? 0:1)) * ic;
++    }      
++    /* Result should always have same sign as 2nd argument. (PIL2) */
++    lua_assert( (v<0) ? (ic<0) : (v>0) ? (ic>0) : 1 );
++    *r= v;
++    return 1;
++  }
++  return 0;  /* let float side return NaN */
++}
++
++int try_powint( lua_Integer *r, lua_Integer ib, lua_Integer ic ) {
++
++    /* In FLOAT/INT32 or FLOAT|DOUBLE/INT64 modes, calculating integer powers 
++     * via FP realm may lose accuracy (i.e. 7^11 = 1977326743, which fits int32
++     * but not 23-bit float mantissa). 
++     *
++     * The current solution is dumb, but it works and uses little code. Use of
++     * integer powers is not anticipated to be very frequent (apart from 2^x,
++     * which is separately optimized).
++     */
++  if (ib==0) *r=0;
++  else if (ic<0) return 0;  /* FP realm */
++  else if (ib==2 && ic < (int)sizeof(lua_Integer)*8-1) *r= ((lua_Integer)1)<<ic;   /* 1,2,4,...2^30 | 2^62 optimization */
++  else if (ic==0) *r=1;
++  else if (luai_abs(ib)==1) *r= (ic%2) ? ib:1;
++  else {
++    lua_Integer x= ib;
++    while( --ic ) {
++      if (!try_mulint( &x, x, ib ))
++        return 0; /* FP realm */
++    }
++    *r= x;
++  }
++  return 1;
++}
++
++int try_unmint( lua_Integer *r, lua_Integer ib ) {
++  /* Negating LUA_INTEGER_MIN leaves the range. */
++  if ( ib != LUA_INTEGER_MIN )  
++    { *r= -ib; return 1; }
++  return 0;
++}
++
+--- /dev/null
++++ b/src/lnum.h
+@@ -0,0 +1,116 @@
++/*
++** $Id: lnum.h,v ... $
++** Internal Number model
++** See Copyright Notice in lua.h
++*/
++
++#ifndef lnum_h
++#define lnum_h
++
++#include <math.h>
++
++#include "lobject.h"
++
++/*
++** The luai_num* macros define the primitive operations over 'lua_Number's
++** (not 'lua_Integer's, not 'lua_Complex').
++*/
++#define luai_numadd(a,b)	((a)+(b))
++#define luai_numsub(a,b)	((a)-(b))
++#define luai_nummul(a,b)	((a)*(b))
++#define luai_numdiv(a,b)	((a)/(b))
++#define luai_nummod(a,b)	((a) - _LF(floor)((a)/(b))*(b))
++#define luai_numpow(a,b)	(_LF(pow)(a,b))
++#define luai_numunm(a)		(-(a))
++#define luai_numeq(a,b)	    ((a)==(b))
++#define luai_numlt(a,b)	    ((a)<(b))
++#define luai_numle(a,b)	    ((a)<=(b))
++#define luai_numisnan(a)	(!luai_numeq((a), (a)))
++
++int try_addint( lua_Integer *r, lua_Integer ib, lua_Integer ic );
++int try_subint( lua_Integer *r, lua_Integer ib, lua_Integer ic );
++int try_mulint( lua_Integer *r, lua_Integer ib, lua_Integer ic );
++int try_divint( lua_Integer *r, lua_Integer ib, lua_Integer ic );
++int try_modint( lua_Integer *r, lua_Integer ib, lua_Integer ic );
++int try_powint( lua_Integer *r, lua_Integer ib, lua_Integer ic );
++int try_unmint( lua_Integer *r, lua_Integer ib );
++
++#ifdef LNUM_COMPLEX
++  static inline lua_Complex luai_vectunm( lua_Complex a ) { return -a; }
++  static inline lua_Complex luai_vectadd( lua_Complex a, lua_Complex b ) { return a+b; }
++  static inline lua_Complex luai_vectsub( lua_Complex a, lua_Complex b ) { return a-b; }
++  static inline lua_Complex luai_vectmul( lua_Complex a, lua_Complex b ) { return a*b; }
++  static inline lua_Complex luai_vectdiv( lua_Complex a, lua_Complex b ) { return a/b; }
++
++/* 
++ * C99 does not provide modulus for complex numbers. It most likely is not
++ * meaningful at all.
++ */
++
++/* 
++ * Complex power
++ *
++ * C99 'cpow' gives inaccurate results for many common cases s.a. (1i)^2 -> 
++ * -1+1.2246467991474e-16i (OS X 10.4, gcc 4.0.1 build 5367)
++ * 
++ * [(a+bi)^(c+di)] = (r^c) * exp(-d*t) * cos(c*t + d*ln(r)) +
++ *                 = (r^c) * exp(-d*t) * sin(c*t + d*ln(r)) *i
++ * r = sqrt(a^2+b^2), t = arctan( b/a )
++ * 
++ * Reference: <http://home.att.net/~srschmitt/complexnumbers.html>
++ * Could also be calculated using: x^y = exp(ln(x)*y)
++ *
++ * Note: Defined here (and not in .c) so 'lmathlib.c' can share the 
++ *       implementation.
++ */
++  static inline
++  lua_Complex luai_vectpow( lua_Complex a, lua_Complex b )
++  {
++# if 1
++    lua_Number ar= _LF(creal)(a), ai= _LF(cimag)(a);
++    lua_Number br= _LF(creal)(b), bi= _LF(cimag)(b);
++    
++    if (ai==0 && bi==0) {     /* a^c (real) */
++        return luai_numpow( ar, br );
++    } 
++
++    int br_int= (int)br;
++    
++    if ( ai!=0 && bi==0 && br_int==br && br_int!=0 && br_int!=INT_MIN ) { 
++        /* (a+bi)^N, N = { +-1,+-2, ... +-INT_MAX } 
++        */
++        lua_Number k= luai_numpow( _LF(sqrt) (ar*ar + ai*ai), br );
++        lua_Number cos_z, sin_z;
++
++        /* Situation depends upon c (N) in the following manner:
++         * 
++         * N%4==0                                => cos(c*t)=1, sin(c*t)=0
++         * (N*sign(b))%4==1 or (N*sign(b))%4==-3 => cos(c*t)=0, sin(c*t)=1
++         * N%4==2 or N%4==-2                     => cos(c*t)=-1, sin(c*t)=0
++         * (N*sign(b))%4==-1 or (N*sign(b))%4==3 => cos(c*t)=0, sin(c*t)=-1
++         */
++      int br_int_abs = br_int<0 ? -br_int:br_int;
++      
++      switch( (br_int_abs%4) * (br_int<0 ? -1:1) * (ai<0 ? -1:1) ) {
++        case 0:             cos_z=1, sin_z=0; break;
++        case 2: case -2:    cos_z=-1, sin_z=0; break;
++        case 1: case -3:    cos_z=0, sin_z=1; break;
++        case 3: case -1:    cos_z=0, sin_z=-1; break;
++        default:            lua_assert(0); return 0;
++      }
++      return k*cos_z + (k*sin_z)*I;
++    }
++# endif
++    return _LF(cpow) ( a, b );
++  }
++#endif
++
++LUAI_FUNC int luaO_str2d (const char *s, lua_Number *res1, lua_Integer *res2);
++LUAI_FUNC void luaO_num2buf( char *s, const TValue *o );
++
++LUAI_FUNC int /*bool*/ tt_integer_valued( const TValue *o, lua_Integer *ref );
++
++#define luai_normalize(o) \
++{ lua_Integer _i; if (tt_integer_valued(o,&_i)) setivalue(o,_i); }
++
++#endif
+--- /dev/null
++++ b/src/lnum_config.h
+@@ -0,0 +1,221 @@
++/*
++** $Id: lnum_config.h,v ... $
++** Internal Number model
++** See Copyright Notice in lua.h
++*/
++
++#ifndef lnum_config_h
++#define lnum_config_h
++
++/*
++** Default number modes
++*/
++#if (!defined LNUM_DOUBLE) && (!defined LNUM_FLOAT) && (!defined LNUM_LDOUBLE)
++# define LNUM_FLOAT
++#endif
++#if (!defined LNUM_INT16) && (!defined LNUM_INT32) && (!defined LNUM_INT64)
++# define LNUM_INT32
++#endif
++
++/*
++** Require C99 mode for COMPLEX, FLOAT and LDOUBLE (only DOUBLE is ANSI C).
++*/
++#if defined(LNUM_COMPLEX) && (__STDC_VERSION__ < 199901L)
++# error "Need C99 for complex (use '--std=c99' or similar)"
++#elif defined(LNUM_LDOUBLE) && (__STDC_VERSION__ < 199901L) && !defined(_MSC_VER)
++# error "Need C99 for 'long double' (use '--std=c99' or similar)"
++#elif defined(LNUM_FLOAT) && (__STDC_VERSION__ < 199901L)
++/* LNUM_FLOAT not supported on Windows */
++# error "Need C99 for 'float' (use '--std=c99' or similar)"
++#endif
++ 
++/*
++** Number mode identifier to accompany the version string.
++*/
++#ifdef LNUM_COMPLEX
++# define _LNUM1 "complex "
++#else
++# define _LNUM1 ""
++#endif
++#ifdef LNUM_DOUBLE
++# define _LNUM2 "double"
++#elif defined(LNUM_FLOAT)
++# define _LNUM2 "float"
++#elif defined(LNUM_LDOUBLE)
++# define _LNUM2 "ldouble"
++#endif
++#ifdef LNUM_INT32
++# define _LNUM3 "int32"
++#elif defined(LNUM_INT64)
++# define _LNUM3 "int64"
++#elif defined(LNUM_INT16)
++# define _LNUM3 "int16"
++#endif
++#define LUA_LNUM _LNUM1 _LNUM2 " " _LNUM3
++
++/*
++** LUA_NUMBER is the type of floating point number in Lua
++** LUA_NUMBER_SCAN is the format for reading numbers.
++** LUA_NUMBER_FMT is the format for writing numbers.
++*/
++#ifdef LNUM_FLOAT
++# define LUA_NUMBER         float
++# define LUA_NUMBER_SCAN    "%f"
++# define LUA_NUMBER_FMT     "%g"  
++#elif (defined LNUM_DOUBLE)
++# define LUA_NUMBER	        double
++# define LUA_NUMBER_SCAN    "%lf"
++# define LUA_NUMBER_FMT     "%.14g"
++#elif (defined LNUM_LDOUBLE)
++# define LUA_NUMBER         long double
++# define LUA_NUMBER_SCAN    "%Lg"
++# define LUA_NUMBER_FMT     "%.20Lg"
++#endif
++
++
++/* 
++** LUAI_MAXNUMBER2STR: size of a buffer fitting any number->string result.
++**
++**  double:  24 (sign, x.xxxxxxxxxxxxxxe+nnnn, and \0)
++**  int64:   21 (19 digits, sign, and \0)
++**  long double: 43 for 128-bit (sign, x.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxe+nnnn, and \0)
++**           30 for 80-bit (sign, x.xxxxxxxxxxxxxxxxxxxxe+nnnn, and \0)
++*/
++#ifdef LNUM_LDOUBLE
++# define _LUAI_MN2S 44
++#else
++# define _LUAI_MN2S 24
++#endif
++
++#ifdef LNUM_COMPLEX
++# define LUAI_MAXNUMBER2STR (2*_LUAI_MN2S)
++#else
++# define LUAI_MAXNUMBER2STR _LUAI_MN2S
++#endif
++
++/*
++** LUA_INTEGER is the integer type used by lua_pushinteger/lua_tointeger/lua_isinteger.
++** LUA_INTEGER_SCAN is the format for reading integers
++** LUA_INTEGER_FMT is the format for writing integers
++**
++** Note: Visual C++ 2005 does not have 'strtoull()', use '_strtoui64()' instead.
++*/
++#ifdef LNUM_INT32
++# if LUAI_BITSINT > 16
++#  define LUA_INTEGER   int
++#  define LUA_INTEGER_SCAN "%d"
++#  define LUA_INTEGER_FMT "%d"
++# else
++/* Note: 'LUA_INTEGER' being 'ptrdiff_t' (as in Lua 5.1) causes problems with
++ *       'printf()' operations. Also 'unsigned ptrdiff_t' is invalid.
++ */
++#  define LUA_INTEGER   long
++#  define LUA_INTEGER_SCAN "%ld"
++#  define LUA_INTEGER_FMT "%ld"
++# endif
++# define LUA_INTEGER_MAX 0x7FFFFFFF             /* 2^31-1 */
++/* */
++#elif defined(LNUM_INT64)
++# define LUA_INTEGER	long long
++# ifdef _MSC_VER
++#  define lua_str2ul    _strtoui64
++# else
++#  define lua_str2ul    strtoull
++# endif
++# define LUA_INTEGER_SCAN "%lld"
++# define LUA_INTEGER_FMT "%lld"
++# define LUA_INTEGER_MAX 0x7fffffffffffffffLL       /* 2^63-1 */ 
++# define LUA_INTEGER_MIN (-LUA_INTEGER_MAX - 1LL)   /* -2^63 */
++/* */
++#elif defined(LNUM_INT16)
++# if LUAI_BITSINT > 16
++#  define LUA_INTEGER    short
++#  define LUA_INTEGER_SCAN "%hd"
++#  define LUA_INTEGER_FMT "%hd"
++# else
++#  define LUA_INTEGER    int
++#  define LUA_INTEGER_SCAN "%d"
++#  define LUA_INTEGER_FMT "%d"
++# endif
++# define LUA_INTEGER_MAX 0x7FFF             /* 2^16-1 */
++#endif
++
++#ifndef lua_str2ul
++# define lua_str2ul (unsigned LUA_INTEGER)strtoul
++#endif
++#ifndef LUA_INTEGER_MIN
++# define LUA_INTEGER_MIN (-LUA_INTEGER_MAX -1)  /* -2^16|32 */
++#endif
++
++/*
++@@ lua_number2int is a macro to convert lua_Number to int.
++@@ lua_number2integer is a macro to convert lua_Number to lua_Integer.
++** CHANGE them if you know a faster way to convert a lua_Number to
++** int (with any rounding method and without throwing errors) in your
++** system. In Pentium machines, a naive typecast from double to int
++** in C is extremely slow, so any alternative is worth trying.
++*/
++
++/* On a Pentium, resort to a trick */
++#if defined(LNUM_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \
++    (defined(__i386) || defined (_M_IX86) || defined(__i386__))
++
++/* On a Microsoft compiler, use assembler */
++# if defined(_MSC_VER)
++#  define lua_number2int(i,d)   __asm fld d   __asm fistp i
++# else
++
++/* the next trick should work on any Pentium, but sometimes clashes
++   with a DirectX idiosyncrasy */
++union luai_Cast { double l_d; long l_l; };
++#  define lua_number2int(i,d) \
++  { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; }
++# endif
++
++# ifndef LNUM_INT64
++#  define lua_number2integer    lua_number2int
++# endif
++
++/* this option always works, but may be slow */
++#else
++# define lua_number2int(i,d)        ((i)=(int)(d))
++#endif
++
++/* Note: Some compilers (OS X gcc 4.0?) may choke on double->long long conversion 
++ *       since it can lose precision. Others do require 'long long' there.  
++ */
++#ifndef lua_number2integer
++# define lua_number2integer(i,d)    ((i)=(lua_Integer)(d))
++#endif
++
++/*
++** 'luai_abs()' to give absolute value of 'lua_Integer'
++*/
++#ifdef LNUM_INT32
++# define luai_abs abs
++#elif defined(LNUM_INT64) && (__STDC_VERSION__ >= 199901L)
++# define luai_abs llabs
++#else
++# define luai_abs(v) ((v) >= 0 ? (v) : -(v))
++#endif
++
++/*
++** LUAI_UACNUMBER is the result of an 'usual argument conversion' over a number.
++** LUAI_UACINTEGER the same, over an integer.
++*/
++#define LUAI_UACNUMBER	double
++#define LUAI_UACINTEGER long
++
++/* ANSI C only has math funcs for 'double. C99 required for float and long double
++ * variants.
++ */
++#ifdef LNUM_DOUBLE
++# define _LF(name) name
++#elif defined(LNUM_FLOAT)
++# define _LF(name) name ## f
++#elif defined(LNUM_LDOUBLE)
++# define _LF(name) name ## l
++#endif
++
++#endif
++
+--- a/src/lobject.c
++++ b/src/lobject.c
+@@ -21,7 +21,8 @@
+ #include "lstate.h"
+ #include "lstring.h"
+ #include "lvm.h"
+-
++#include "llex.h"
++#include "lnum.h"
+ 
+ 
+ const TValue luaO_nilobject_ = {{NULL}, LUA_TNIL};
+@@ -70,12 +71,31 @@ int luaO_log2 (unsigned int x) {
+ 
+ 
+ int luaO_rawequalObj (const TValue *t1, const TValue *t2) {
+-  if (ttype(t1) != ttype(t2)) return 0;
++  if (!ttype_ext_same(t1,t2)) return 0;
+   else switch (ttype(t1)) {
+     case LUA_TNIL:
+       return 1;
++    case LUA_TINT:
++      if (ttype(t2)==LUA_TINT)
++        return ivalue(t1) == ivalue(t2);
++      else {  /* t1:int, t2:num */
++#ifdef LNUM_COMPLEX
++        if (nvalue_img_fast(t2) != 0) return 0;
++#endif
++        /* Avoid doing accuracy losing cast, if possible. */
++        lua_Integer tmp;
++        if (tt_integer_valued(t2,&tmp)) 
++          return ivalue(t1) == tmp;
++        else
++          return luai_numeq( cast_num(ivalue(t1)), nvalue_fast(t2) );
++        }
+     case LUA_TNUMBER:
+-      return luai_numeq(nvalue(t1), nvalue(t2));
++        if (ttype(t2)==LUA_TINT)
++          return luaO_rawequalObj(t2, t1);  /* swap LUA_TINT to left */
++#ifdef LNUM_COMPLEX
++        if (!luai_numeq(nvalue_img_fast(t1), nvalue_img_fast(t2))) return 0;
++#endif
++        return luai_numeq(nvalue_fast(t1), nvalue_fast(t2));
+     case LUA_TBOOLEAN:
+       return bvalue(t1) == bvalue(t2);  /* boolean true must be 1 !! */
+     case LUA_TLIGHTUSERDATA:
+@@ -86,21 +106,6 @@ int luaO_rawequalObj (const TValue *t1, 
+   }
+ }
+ 
+-
+-int luaO_str2d (const char *s, lua_Number *result) {
+-  char *endptr;
+-  *result = lua_str2number(s, &endptr);
+-  if (endptr == s) return 0;  /* conversion failed */
+-  if (*endptr == 'x' || *endptr == 'X')  /* maybe an hexadecimal constant? */
+-    *result = cast_num(strtoul(s, &endptr, 16));
+-  if (*endptr == '\0') return 1;  /* most common case */
+-  while (isspace(cast(unsigned char, *endptr))) endptr++;
+-  if (*endptr != '\0') return 0;  /* invalid trailing characters? */
+-  return 1;
+-}
+-
+-
+-
+ static void pushstr (lua_State *L, const char *str) {
+   setsvalue2s(L, L->top, luaS_new(L, str));
+   incr_top(L);
+@@ -131,7 +136,11 @@ const char *luaO_pushvfstring (lua_State
+         break;
+       }
+       case 'd': {
+-        setnvalue(L->top, cast_num(va_arg(argp, int)));
++        /* This is tricky for 64-bit integers; maybe they even cannot be
++         * supported on all compilers; depends on the conversions applied to
++         * variable argument lists. TBD: test!
++         */
++        setivalue(L->top, (lua_Integer) va_arg(argp, l_uacInteger));
+         incr_top(L);
+         break;
+       }
+@@ -212,3 +221,4 @@ void luaO_chunkid (char *out, const char
+     }
+   }
+ }
++
+--- a/src/lobject.h
++++ b/src/lobject.h
+@@ -17,7 +17,11 @@
+ 
+ 
+ /* tags for values visible from Lua */
+-#define LAST_TAG	LUA_TTHREAD
++#if LUA_TINT > LUA_TTHREAD
++# define LAST_TAG   LUA_TINT
++#else
++# define LAST_TAG	LUA_TTHREAD
++#endif
+ 
+ #define NUM_TAGS	(LAST_TAG+1)
+ 
+@@ -59,7 +63,12 @@ typedef struct GCheader {
+ typedef union {
+   GCObject *gc;
+   void *p;
++#ifdef LNUM_COMPLEX
++  lua_Complex n;
++#else
+   lua_Number n;
++#endif
++  lua_Integer i;
+   int b;
+ } Value;
+ 
+@@ -77,7 +86,11 @@ typedef struct lua_TValue {
+ 
+ /* Macros to test type */
+ #define ttisnil(o)	(ttype(o) == LUA_TNIL)
+-#define ttisnumber(o)	(ttype(o) == LUA_TNUMBER)
++#define ttisint(o) (ttype(o) == LUA_TINT)
++#define ttisnumber(o) ((ttype(o) == LUA_TINT) || (ttype(o) == LUA_TNUMBER))
++#ifdef LNUM_COMPLEX
++# define ttiscomplex(o) ((ttype(o) == LUA_TNUMBER) && (nvalue_img_fast(o)!=0))
++#endif
+ #define ttisstring(o)	(ttype(o) == LUA_TSTRING)
+ #define ttistable(o)	(ttype(o) == LUA_TTABLE)
+ #define ttisfunction(o)	(ttype(o) == LUA_TFUNCTION)
+@@ -90,7 +103,25 @@ typedef struct lua_TValue {
+ #define ttype(o)	((o)->tt)
+ #define gcvalue(o)	check_exp(iscollectable(o), (o)->value.gc)
+ #define pvalue(o)	check_exp(ttislightuserdata(o), (o)->value.p)
+-#define nvalue(o)	check_exp(ttisnumber(o), (o)->value.n)
++
++#define ttype_ext(o) ( ttype(o) == LUA_TINT ? LUA_TNUMBER : ttype(o) )
++#define ttype_ext_same(o1,o2) ( (ttype(o1)==ttype(o2)) || (ttisnumber(o1) && ttisnumber(o2)) )
++
++/* '_fast' variants are for cases where 'ttype(o)' is known to be LUA_TNUMBER.
++ */
++#ifdef LNUM_COMPLEX
++#  define nvalue_complex_fast(o) check_exp( ttype(o)==LUA_TNUMBER, (o)->value.n )   
++#  define nvalue_fast(o)     ( _LF(creal) ( nvalue_complex_fast(o) ) )
++#  define nvalue_img_fast(o) ( _LF(cimag) ( nvalue_complex_fast(o) ) )
++#  define nvalue_complex(o) check_exp( ttisnumber(o), (ttype(o)==LUA_TINT) ? (o)->value.i : (o)->value.n )
++#  define nvalue_img(o) check_exp( ttisnumber(o), (ttype(o)==LUA_TINT) ? 0 : _LF(cimag)( (o)->value.n ) ) 
++#  define nvalue(o) check_exp( ttisnumber(o), (ttype(o)==LUA_TINT) ? cast_num((o)->value.i) : _LF(creal)((o)->value.n) ) 
++#else
++# define nvalue(o)	check_exp( ttisnumber(o), (ttype(o)==LUA_TINT) ? cast_num((o)->value.i) : (o)->value.n )
++# define nvalue_fast(o) check_exp( ttype(o)==LUA_TNUMBER, (o)->value.n )   
++#endif
++#define ivalue(o)	check_exp( ttype(o)==LUA_TINT, (o)->value.i )
++
+ #define rawtsvalue(o)	check_exp(ttisstring(o), &(o)->value.gc->ts)
+ #define tsvalue(o)	(&rawtsvalue(o)->tsv)
+ #define rawuvalue(o)	check_exp(ttisuserdata(o), &(o)->value.gc->u)
+@@ -116,8 +147,27 @@ typedef struct lua_TValue {
+ /* Macros to set values */
+ #define setnilvalue(obj) ((obj)->tt=LUA_TNIL)
+ 
+-#define setnvalue(obj,x) \
+-  { TValue *i_o=(obj); i_o->value.n=(x); i_o->tt=LUA_TNUMBER; }
++/* Must not have side effects, 'x' may be expression.
++*/
++#define setivalue(obj,x) \
++    { TValue *i_o=(obj); i_o->value.i=(x); i_o->tt=LUA_TINT; }
++
++# define setnvalue(obj,x) \
++    { TValue *i_o=(obj); i_o->value.n= (x); i_o->tt=LUA_TNUMBER; }
++
++/* Note: Complex always has "inline", both are C99.
++*/
++#ifdef LNUM_COMPLEX
++  static inline void setnvalue_complex_fast( TValue *obj, lua_Complex x ) {
++    lua_assert( _LF(cimag)(x) != 0 );
++    obj->value.n= x; obj->tt= LUA_TNUMBER;
++  }
++  static inline void setnvalue_complex( TValue *obj, lua_Complex x ) {
++    if (_LF(cimag)(x) == 0) { setnvalue(obj, _LF(creal)(x)); }
++    else { obj->value.n= x; obj->tt= LUA_TNUMBER; }
++  }
++#endif
++
+ 
+ #define setpvalue(obj,x) \
+   { TValue *i_o=(obj); i_o->value.p=(x); i_o->tt=LUA_TLIGHTUSERDATA; }
+@@ -155,9 +205,6 @@ typedef struct lua_TValue {
+     i_o->value.gc=cast(GCObject *, (x)); i_o->tt=LUA_TPROTO; \
+     checkliveness(G(L),i_o); }
+ 
+-
+-
+-
+ #define setobj(L,obj1,obj2) \
+   { const TValue *o2=(obj2); TValue *o1=(obj1); \
+     o1->value = o2->value; o1->tt=o2->tt; \
+@@ -185,8 +232,11 @@ typedef struct lua_TValue {
+ 
+ #define setttype(obj, tt) (ttype(obj) = (tt))
+ 
+-
+-#define iscollectable(o)	(ttype(o) >= LUA_TSTRING)
++#if LUA_TINT >= LUA_TSTRING
++# define iscollectable(o)	((ttype(o) >= LUA_TSTRING) && (ttype(o) != LUA_TINT))
++#else
++# define iscollectable(o)	(ttype(o) >= LUA_TSTRING)
++#endif
+ 
+ 
+ 
+@@ -370,12 +420,10 @@ LUAI_FUNC int luaO_log2 (unsigned int x)
+ LUAI_FUNC int luaO_int2fb (unsigned int x);
+ LUAI_FUNC int luaO_fb2int (int x);
+ LUAI_FUNC int luaO_rawequalObj (const TValue *t1, const TValue *t2);
+-LUAI_FUNC int luaO_str2d (const char *s, lua_Number *result);
+ LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt,
+                                                        va_list argp);
+ LUAI_FUNC const char *luaO_pushfstring (lua_State *L, const char *fmt, ...);
+ LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t len);
+ 
+-
+ #endif
+ 
+--- a/src/loslib.c
++++ b/src/loslib.c
+@@ -186,15 +186,30 @@ static int os_time (lua_State *L) {
+   }
+   if (t == (time_t)(-1))
+     lua_pushnil(L);
+-  else
+-    lua_pushnumber(L, (lua_Number)t);
++  else {
++     /* On float systems the pushed value must be an integer, NOT a number.
++      * Otherwise, accuracy is lost in the time_t->float conversion.
++      */
++#ifdef LNUM_FLOAT
++     lua_pushinteger(L, (lua_Integer) t);
++#else
++     lua_pushnumber(L, (lua_Number) t);
++#endif
++     }
+   return 1;
+ }
+ 
+ 
+ static int os_difftime (lua_State *L) {
++#ifdef LNUM_FLOAT
++  lua_Integer i= (lua_Integer)
++    difftime( (time_t)(luaL_checkinteger(L, 1)),
++              (time_t)(luaL_optinteger(L, 2, 0)));
++  lua_pushinteger(L, i);
++#else
+   lua_pushnumber(L, difftime((time_t)(luaL_checknumber(L, 1)),
+                              (time_t)(luaL_optnumber(L, 2, 0))));
++#endif
+   return 1;
+ }
+ 
+--- a/src/lparser.c
++++ b/src/lparser.c
+@@ -33,7 +33,6 @@
+ 
+ #define luaY_checklimit(fs,v,l,m)	if ((v)>(l)) errorlimit(fs,l,m)
+ 
+-
+ /*
+ ** nodes for block list (list of active blocks)
+ */
+@@ -72,7 +71,7 @@ static void errorlimit (FuncState *fs, i
+   const char *msg = (fs->f->linedefined == 0) ?
+     luaO_pushfstring(fs->L, "main function has more than %d %s", limit, what) :
+     luaO_pushfstring(fs->L, "function at line %d has more than %d %s",
+-                            fs->f->linedefined, limit, what);
++                            (fs->f->linedefined), limit, what);
+   luaX_lexerror(fs->ls, msg, 0);
+ }
+ 
+@@ -733,6 +732,18 @@ static void simpleexp (LexState *ls, exp
+       v->u.nval = ls->t.seminfo.r;
+       break;
+     }
++    case TK_INT: {
++      init_exp(v, VKINT, 0);
++      v->u.ival = ls->t.seminfo.i;
++      break;
++    }
++#ifdef LNUM_COMPLEX
++    case TK_NUMBER2: {
++      init_exp(v, VKNUM2, 0);
++      v->u.nval = ls->t.seminfo.r;
++      break;
++    }
++#endif
+     case TK_STRING: {
+       codestring(ls, v, ls->t.seminfo.ts);
+       break;
+@@ -1079,7 +1090,7 @@ static void fornum (LexState *ls, TStrin
+   if (testnext(ls, ','))
+     exp1(ls);  /* optional step */
+   else {  /* default step = 1 */
+-    luaK_codeABx(fs, OP_LOADK, fs->freereg, luaK_numberK(fs, 1));
++    luaK_codeABx(fs, OP_LOADK, fs->freereg, luaK_integerK(fs, 1));
+     luaK_reserveregs(fs, 1);
+   }
+   forbody(ls, base, line, 1, 1);
+--- a/src/lparser.h
++++ b/src/lparser.h
+@@ -31,7 +31,11 @@ typedef enum {
+   VRELOCABLE,	/* info = instruction pc */
+   VNONRELOC,	/* info = result register */
+   VCALL,	/* info = instruction pc */
+-  VVARARG	/* info = instruction pc */
++  VVARARG,	/* info = instruction pc */
++  VKINT     /* ival = integer value */
++#ifdef LNUM_COMPLEX
++  ,VKNUM2   /* nval = imaginary value */
++#endif
+ } expkind;
+ 
+ typedef struct expdesc {
+@@ -39,6 +43,7 @@ typedef struct expdesc {
+   union {
+     struct { int info, aux; } s;
+     lua_Number nval;
++    lua_Integer ival;
+   } u;
+   int t;  /* patch list of `exit when true' */
+   int f;  /* patch list of `exit when false' */
+--- a/src/lstrlib.c
++++ b/src/lstrlib.c
+@@ -43,8 +43,8 @@ static ptrdiff_t posrelat (ptrdiff_t pos
+ static int str_sub (lua_State *L) {
+   size_t l;
+   const char *s = luaL_checklstring(L, 1, &l);
+-  ptrdiff_t start = posrelat(luaL_checkinteger(L, 2), l);
+-  ptrdiff_t end = posrelat(luaL_optinteger(L, 3, -1), l);
++  ptrdiff_t start = posrelat(luaL_checkint32(L, 2), l);
++  ptrdiff_t end = posrelat(luaL_optint32(L, 3, -1), l);
+   if (start < 1) start = 1;
+   if (end > (ptrdiff_t)l) end = (ptrdiff_t)l;
+   if (start <= end)
+@@ -106,8 +106,8 @@ static int str_rep (lua_State *L) {
+ static int str_byte (lua_State *L) {
+   size_t l;
+   const char *s = luaL_checklstring(L, 1, &l);
+-  ptrdiff_t posi = posrelat(luaL_optinteger(L, 2, 1), l);
+-  ptrdiff_t pose = posrelat(luaL_optinteger(L, 3, posi), l);
++  ptrdiff_t posi = posrelat(luaL_optint32(L, 2, 1), l);
++  ptrdiff_t pose = posrelat(luaL_optint32(L, 3, posi), l);
+   int n, i;
+   if (posi <= 0) posi = 1;
+   if ((size_t)pose > l) pose = l;
+@@ -496,7 +496,7 @@ static int str_find_aux (lua_State *L, i
+   size_t l1, l2;
+   const char *s = luaL_checklstring(L, 1, &l1);
+   const char *p = luaL_checklstring(L, 2, &l2);
+-  ptrdiff_t init = posrelat(luaL_optinteger(L, 3, 1), l1) - 1;
++  ptrdiff_t init = posrelat(luaL_optint32(L, 3, 1), l1) - 1;
+   if (init < 0) init = 0;
+   else if ((size_t)(init) > l1) init = (ptrdiff_t)l1;
+   if (find && (lua_toboolean(L, 4) ||  /* explicit request? */
+@@ -690,7 +690,7 @@ static int str_gsub (lua_State *L) {
+ ** maximum size of each format specification (such as '%-099.99d')
+ ** (+10 accounts for %99.99x plus margin of error)
+ */
+-#define MAX_FORMAT	(sizeof(FLAGS) + sizeof(LUA_INTFRMLEN) + 10)
++#define MAX_FORMAT	(sizeof(FLAGS) + sizeof(LUA_INTEGER_FMT)-2 + 10)
+ 
+ 
+ static void addquoted (lua_State *L, luaL_Buffer *b, int arg) {
+@@ -747,9 +747,9 @@ static const char *scanformat (lua_State
+ static void addintlen (char *form) {
+   size_t l = strlen(form);
+   char spec = form[l - 1];
+-  strcpy(form + l - 1, LUA_INTFRMLEN);
+-  form[l + sizeof(LUA_INTFRMLEN) - 2] = spec;
+-  form[l + sizeof(LUA_INTFRMLEN) - 1] = '\0';
++  const char *tmp= LUA_INTEGER_FMT;   /* "%lld" or "%ld" */
++  strcpy(form + l - 1, tmp+1);
++  form[l + sizeof(LUA_INTEGER_FMT)-4] = spec;
+ }
+ 
+ 
+@@ -779,12 +779,12 @@ static int str_format (lua_State *L) {
+         }
+         case 'd':  case 'i': {
+           addintlen(form);
+-          sprintf(buff, form, (LUA_INTFRM_T)luaL_checknumber(L, arg));
++          sprintf(buff, form, luaL_checkinteger(L, arg));
+           break;
+         }
+         case 'o':  case 'u':  case 'x':  case 'X': {
+           addintlen(form);
+-          sprintf(buff, form, (unsigned LUA_INTFRM_T)luaL_checknumber(L, arg));
++          sprintf(buff, form, (unsigned LUA_INTEGER)luaL_checkinteger(L, arg));
+           break;
+         }
+         case 'e':  case 'E': case 'f':
+--- a/src/ltable.c
++++ b/src/ltable.c
+@@ -33,6 +33,7 @@
+ #include "lobject.h"
+ #include "lstate.h"
+ #include "ltable.h"
++#include "lnum.h"
+ 
+ 
+ /*
+@@ -51,25 +52,15 @@
+   
+ #define hashstr(t,str)  hashpow2(t, (str)->tsv.hash)
+ #define hashboolean(t,p)        hashpow2(t, p)
+-
++#define hashint(t,i)    hashpow2(t,i)
+ 
+ /*
+ ** for some types, it is better to avoid modulus by power of 2, as
+ ** they tend to have many 2 factors.
+ */
+ #define hashmod(t,n)	(gnode(t, ((n) % ((sizenode(t)-1)|1))))
+-
+-
+ #define hashpointer(t,p)	hashmod(t, IntPoint(p))
+ 
+-
+-/*
+-** number of ints inside a lua_Number
+-*/
+-#define numints		cast_int(sizeof(lua_Number)/sizeof(int))
+-
+-
+-
+ #define dummynode		(&dummynode_)
+ 
+ static const Node dummynode_ = {
+@@ -80,27 +71,46 @@ static const Node dummynode_ = {
+ 
+ /*
+ ** hash for lua_Numbers
++**
++** for non-complex modes, never called with 'lua_Integer' value range (s.a. 0)
+ */
+ static Node *hashnum (const Table *t, lua_Number n) {
+-  unsigned int a[numints];
+-  int i;
+-  if (luai_numeq(n, 0))  /* avoid problems with -0 */
+-    return gnode(t, 0);
+-  memcpy(a, &n, sizeof(a));
+-  for (i = 1; i < numints; i++) a[0] += a[i];
+-  return hashmod(t, a[0]);
++  const unsigned int *p= cast(const unsigned int *,&n);
++  unsigned int sum= *p;
++  unsigned int m= sizeof(lua_Number)/sizeof(int);
++  unsigned int i;
++  /* OS X Intel has 'm'==4 and gives "Bus error" if the last integer of 
++   * 'n' is read; the actual size of long double is only 80 bits = 10 bytes.
++   * Linux x86 has 'm'==3, and does not require reduction.
++   */
++#if defined(LNUM_LDOUBLE) && defined(__i386__)
++  if (m>3) m--;
++#endif
++  for (i = 1; i < m; i++) sum += p[i];
++  return hashmod(t, sum);
+ }
+ 
+ 
+-
+ /*
+ ** returns the `main' position of an element in a table (that is, the index
+ ** of its hash value)
++**
++** Floating point numbers with integer value give the hash position of the
++** integer (so they use the same table position).
+ */
+ static Node *mainposition (const Table *t, const TValue *key) {
++  lua_Integer i;
+   switch (ttype(key)) {
+     case LUA_TNUMBER:
+-      return hashnum(t, nvalue(key));
++      if (tt_integer_valued(key,&i)) 
++        return hashint(t, i);
++#ifdef LNUM_COMPLEX
++      if (nvalue_img_fast(key)!=0 && luai_numeq(nvalue_fast(key),0))
++        return gnode(t, 0);  /* 0 and -0 to give same hash */
++#endif
++      return hashnum(t, nvalue_fast(key));
++    case LUA_TINT:
++      return hashint(t, ivalue(key));
+     case LUA_TSTRING:
+       return hashstr(t, rawtsvalue(key));
+     case LUA_TBOOLEAN:
+@@ -116,16 +126,20 @@ static Node *mainposition (const Table *
+ /*
+ ** returns the index for `key' if `key' is an appropriate key to live in
+ ** the array part of the table, -1 otherwise.
++**
++** Anything <=0 is taken as not being in the array part.
+ */
+-static int arrayindex (const TValue *key) {
+-  if (ttisnumber(key)) {
+-    lua_Number n = nvalue(key);
+-    int k;
+-    lua_number2int(k, n);
+-    if (luai_numeq(cast_num(k), n))
+-      return k;
++static int arrayindex (const TValue *key, int max) {
++  lua_Integer k;
++  switch( ttype(key) ) {
++    case LUA_TINT:
++      k= ivalue(key); break;
++    case LUA_TNUMBER:
++      if (tt_integer_valued(key,&k)) break;
++    default:
++      return -1;  /* not to be used as array index */
+   }
+-  return -1;  /* `key' did not match some condition */
++  return ((k>0) && (k <= max)) ? cast_int(k) : -1;
+ }
+ 
+ 
+@@ -137,8 +151,8 @@ static int arrayindex (const TValue *key
+ static int findindex (lua_State *L, Table *t, StkId key) {
+   int i;
+   if (ttisnil(key)) return -1;  /* first iteration */
+-  i = arrayindex(key);
+-  if (0 < i && i <= t->sizearray)  /* is `key' inside array part? */
++  i = arrayindex(key, t->sizearray);
++  if (i>0)  /* inside array part? */
+     return i-1;  /* yes; that's the index (corrected to C) */
+   else {
+     Node *n = mainposition(t, key);
+@@ -163,7 +177,7 @@ int luaH_next (lua_State *L, Table *t, S
+   int i = findindex(L, t, key);  /* find original element */
+   for (i++; i < t->sizearray; i++) {  /* try first array part */
+     if (!ttisnil(&t->array[i])) {  /* a non-nil value? */
+-      setnvalue(key, cast_num(i+1));
++      setivalue(key, i+1);
+       setobj2s(L, key+1, &t->array[i]);
+       return 1;
+     }
+@@ -209,8 +223,8 @@ static int computesizes (int nums[], int
+ 
+ 
+ static int countint (const TValue *key, int *nums) {
+-  int k = arrayindex(key);
+-  if (0 < k && k <= MAXASIZE) {  /* is `key' an appropriate array index? */
++  int k = arrayindex(key,MAXASIZE);
++  if (k>0) {  /* appropriate array index? */
+     nums[ceillog2(k)]++;  /* count as such */
+     return 1;
+   }
+@@ -308,7 +322,7 @@ static void resize (lua_State *L, Table 
+     /* re-insert elements from vanishing slice */
+     for (i=nasize; i<oldasize; i++) {
+       if (!ttisnil(&t->array[i]))
+-        setobjt2t(L, luaH_setnum(L, t, i+1), &t->array[i]);
++        setobjt2t(L, luaH_setint(L, t, i+1), &t->array[i]);
+     }
+     /* shrink array */
+     luaM_reallocvector(L, t->array, oldasize, nasize, TValue);
+@@ -409,7 +423,9 @@ static TValue *newkey (lua_State *L, Tab
+     othern = mainposition(t, key2tval(mp));
+     if (othern != mp) {  /* is colliding node out of its main position? */
+       /* yes; move colliding node into free position */
+-      while (gnext(othern) != mp) othern = gnext(othern);  /* find previous */
++      while (gnext(othern) != mp) {
++        othern = gnext(othern);  /* find previous */
++      }
+       gnext(othern) = n;  /* redo the chain with `n' in place of `mp' */
+       *n = *mp;  /* copy colliding node into free pos. (mp->next also goes) */
+       gnext(mp) = NULL;  /* now `mp' is free */
+@@ -432,17 +448,18 @@ static TValue *newkey (lua_State *L, Tab
+ /*
+ ** search function for integers
+ */
+-const TValue *luaH_getnum (Table *t, int key) {
++const TValue *luaH_getint (Table *t, lua_Integer key) {
+   /* (1 <= key && key <= t->sizearray) */
+   if (cast(unsigned int, key-1) < cast(unsigned int, t->sizearray))
+     return &t->array[key-1];
+   else {
+-    lua_Number nk = cast_num(key);
+-    Node *n = hashnum(t, nk);
++    Node *n = hashint(t, key);
+     do {  /* check whether `key' is somewhere in the chain */
+-      if (ttisnumber(gkey(n)) && luai_numeq(nvalue(gkey(n)), nk))
++      if (ttisint(gkey(n)) && (ivalue(gkey(n)) == key)) {
+         return gval(n);  /* that's it */
+-      else n = gnext(n);
++      } else { 
++      n = gnext(n);
++    }
+     } while (n);
+     return luaO_nilobject;
+   }
+@@ -470,14 +487,12 @@ const TValue *luaH_get (Table *t, const 
+   switch (ttype(key)) {
+     case LUA_TNIL: return luaO_nilobject;
+     case LUA_TSTRING: return luaH_getstr(t, rawtsvalue(key));
++    case LUA_TINT: return luaH_getint(t, ivalue(key));
+     case LUA_TNUMBER: {
+-      int k;
+-      lua_Number n = nvalue(key);
+-      lua_number2int(k, n);
+-      if (luai_numeq(cast_num(k), nvalue(key))) /* index is int? */
+-        return luaH_getnum(t, k);  /* use specialized version */
+-      /* else go through */
+-    }
++      lua_Integer i;
++      if (tt_integer_valued(key,&i))
++        return luaH_getint(t,i);
++    } /* pass through */
+     default: {
+       Node *n = mainposition(t, key);
+       do {  /* check whether `key' is somewhere in the chain */
+@@ -498,20 +513,25 @@ TValue *luaH_set (lua_State *L, Table *t
+     return cast(TValue *, p);
+   else {
+     if (ttisnil(key)) luaG_runerror(L, "table index is nil");
+-    else if (ttisnumber(key) && luai_numisnan(nvalue(key)))
+-      luaG_runerror(L, "table index is NaN");
++    else if (ttype(key)==LUA_TNUMBER) {
++      lua_Integer k;
++      if (luai_numisnan(nvalue_fast(key)))
++        luaG_runerror(L, "table index is NaN");
++      if (tt_integer_valued(key,&k))
++        return luaH_setint(L, t, k);
++    }
+     return newkey(L, t, key);
+   }
+ }
+ 
+ 
+-TValue *luaH_setnum (lua_State *L, Table *t, int key) {
+-  const TValue *p = luaH_getnum(t, key);
++TValue *luaH_setint (lua_State *L, Table *t, lua_Integer key) {
++  const TValue *p = luaH_getint(t, key);
+   if (p != luaO_nilobject)
+     return cast(TValue *, p);
+   else {
+     TValue k;
+-    setnvalue(&k, cast_num(key));
++    setivalue(&k, key);
+     return newkey(L, t, &k);
+   }
+ }
+@@ -533,20 +553,21 @@ static int unbound_search (Table *t, uns
+   unsigned int i = j;  /* i is zero or a present index */
+   j++;
+   /* find `i' and `j' such that i is present and j is not */
+-  while (!ttisnil(luaH_getnum(t, j))) {
++  while (!ttisnil(luaH_getint(t, j))) {
+     i = j;
+     j *= 2;
+     if (j > cast(unsigned int, MAX_INT)) {  /* overflow? */
+       /* table was built with bad purposes: resort to linear search */
+-      i = 1;
+-      while (!ttisnil(luaH_getnum(t, i))) i++;
+-      return i - 1;
++      for( i = 1; i<MAX_INT+1; i++ ) {
++        if (ttisnil(luaH_getint(t, i))) break;
++      }
++      return i - 1;  /* up to MAX_INT */
+     }
+   }
+   /* now do a binary search between them */
+   while (j - i > 1) {
+     unsigned int m = (i+j)/2;
+-    if (ttisnil(luaH_getnum(t, m))) j = m;
++    if (ttisnil(luaH_getint(t, m))) j = m;
+     else i = m;
+   }
+   return i;
+--- a/src/ltable.h
++++ b/src/ltable.h
+@@ -18,8 +18,8 @@
+ #define key2tval(n)	(&(n)->i_key.tvk)
+ 
+ 
+-LUAI_FUNC const TValue *luaH_getnum (Table *t, int key);
+-LUAI_FUNC TValue *luaH_setnum (lua_State *L, Table *t, int key);
++LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key);
++LUAI_FUNC TValue *luaH_setint (lua_State *L, Table *t, lua_Integer key);
+ LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key);
+ LUAI_FUNC TValue *luaH_setstr (lua_State *L, Table *t, TString *key);
+ LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key);
+--- a/src/ltm.c
++++ b/src/ltm.c
+@@ -19,7 +19,6 @@
+ #include "ltm.h"
+ 
+ 
+-
+ const char *const luaT_typenames[] = {
+   "nil", "boolean", "userdata", "number",
+   "string", "table", "function", "userdata", "thread",
+@@ -67,6 +66,9 @@ const TValue *luaT_gettmbyobj (lua_State
+     case LUA_TUSERDATA:
+       mt = uvalue(o)->metatable;
+       break;
++    case LUA_TINT:
++      mt = G(L)->mt[LUA_TNUMBER];
++      break;
+     default:
+       mt = G(L)->mt[ttype(o)];
+   }
+--- a/src/lua.c
++++ b/src/lua.c
+@@ -16,7 +16,7 @@
+ 
+ #include "lauxlib.h"
+ #include "lualib.h"
+-
++#include "llimits.h"
+ 
+ 
+ static lua_State *globalL = NULL;
+@@ -382,6 +382,15 @@ int main (int argc, char **argv) {
+     l_message(argv[0], "cannot create state: not enough memory");
+     return EXIT_FAILURE;
+   }
++  /* Checking 'sizeof(lua_Integer)' cannot be made in preprocessor on all compilers.
++  */
++#ifdef LNUM_INT16
++  lua_assert( sizeof(lua_Integer) == 2 );
++#elif defined(LNUM_INT32)
++  lua_assert( sizeof(lua_Integer) == 4 );
++#elif defined(LNUM_INT64)
++  lua_assert( sizeof(lua_Integer) == 8 );
++#endif
+   s.argc = argc;
+   s.argv = argv;
+   status = lua_cpcall(L, &pmain, &s);
+--- a/src/lua.h
++++ b/src/lua.h
+@@ -19,7 +19,7 @@
+ #define LUA_VERSION	"Lua 5.1"
+ #define LUA_RELEASE	"Lua 5.1.5"
+ #define LUA_VERSION_NUM	501
+-#define LUA_COPYRIGHT	"Copyright (C) 1994-2012 Lua.org, PUC-Rio"
++#define LUA_COPYRIGHT	"Copyright (C) 1994-2012 Lua.org, PUC-Rio" " (" LUA_LNUM ")"
+ #define LUA_AUTHORS 	"R. Ierusalimschy, L. H. de Figueiredo & W. Celes"
+ 
+ 
+@@ -71,6 +71,16 @@ typedef void * (*lua_Alloc) (void *ud, v
+ */
+ #define LUA_TNONE		(-1)
+ 
++/* LUA_TINT is an internal type, not visible to applications. There are three
++ * potential values where it can be tweaked to (code autoadjusts to these):
++ *
++ * -2: not 'usual' type value; good since 'LUA_TINT' is not part of the API
++ * LUA_TNUMBER+1: shifts other type values upwards, breaking binary compatibility
++ *     not acceptable for 5.1, maybe 5.2 onwards?
++ *  9: greater than existing (5.1) type values.
++*/
++#define LUA_TINT (-2)
++
+ #define LUA_TNIL		0
+ #define LUA_TBOOLEAN		1
+ #define LUA_TLIGHTUSERDATA	2
+@@ -139,6 +149,8 @@ LUA_API int             (lua_isuserdata)
+ LUA_API int             (lua_type) (lua_State *L, int idx);
+ LUA_API const char     *(lua_typename) (lua_State *L, int tp);
+ 
++LUA_API int             (lua_isinteger) (lua_State *L, int idx);
++
+ LUA_API int            (lua_equal) (lua_State *L, int idx1, int idx2);
+ LUA_API int            (lua_rawequal) (lua_State *L, int idx1, int idx2);
+ LUA_API int            (lua_lessthan) (lua_State *L, int idx1, int idx2);
+@@ -244,6 +256,19 @@ LUA_API lua_Alloc (lua_getallocf) (lua_S
+ LUA_API void lua_setallocf (lua_State *L, lua_Alloc f, void *ud);
+ 
+ 
++/*
++* It is unnecessary to break Lua C API 'lua_tonumber()' compatibility, just
++* because the Lua number type is complex. Most C modules would use scalars
++* only. We'll introduce new 'lua_tocomplex' and 'lua_pushcomplex' for when
++* the module really wants to use them.
++*/
++#ifdef LNUM_COMPLEX
++  #include <complex.h>
++  typedef LUA_NUMBER complex lua_Complex;
++  LUA_API lua_Complex (lua_tocomplex) (lua_State *L, int idx);
++  LUA_API void (lua_pushcomplex) (lua_State *L, lua_Complex v);
++#endif
++
+ 
+ /* 
+ ** ===============================================================
+@@ -268,7 +293,12 @@ LUA_API void lua_setallocf (lua_State *L
+ #define lua_isboolean(L,n)	(lua_type(L, (n)) == LUA_TBOOLEAN)
+ #define lua_isthread(L,n)	(lua_type(L, (n)) == LUA_TTHREAD)
+ #define lua_isnone(L,n)		(lua_type(L, (n)) == LUA_TNONE)
+-#define lua_isnoneornil(L, n)	(lua_type(L, (n)) <= 0)
++
++#if LUA_TINT < 0
++# define lua_isnoneornil(L, n)	( (lua_type(L,(n)) <= 0) && (lua_type(L,(n)) != LUA_TINT) )
++#else
++# define lua_isnoneornil(L, n)	(lua_type(L, (n)) <= 0)
++#endif
+ 
+ #define lua_pushliteral(L, s)	\
+ 	lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1)
+@@ -386,3 +416,4 @@ struct lua_Debug {
+ 
+ 
+ #endif
++
+--- a/src/luaconf.h
++++ b/src/luaconf.h
+@@ -10,7 +10,9 @@
+ 
+ #include <limits.h>
+ #include <stddef.h>
+-
++#ifdef lua_assert
++# include <assert.h>
++#endif
+ 
+ /*
+ ** ==================================================================
+@@ -136,14 +138,38 @@
+ 
+ 
+ /*
+-@@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.
+-** CHANGE that if ptrdiff_t is not adequate on your machine. (On most
+-** machines, ptrdiff_t gives a good choice between int or long.)
++@@ LUAI_BITSINT defines the number of bits in an int.
++** CHANGE here if Lua cannot automatically detect the number of bits of
++** your machine. Probably you do not need to change this.
+ */
+-#define LUA_INTEGER	ptrdiff_t
++/* avoid overflows in comparison */
++#if INT_MAX-20 < 32760
++#define LUAI_BITSINT	16
++#elif INT_MAX > 2147483640L
++/* int has at least 32 bits */
++#define LUAI_BITSINT	32
++#else
++#error "you must define LUA_BITSINT with number of bits in an integer"
++#endif
+ 
+ 
+ /*
++@@ LNUM_DOUBLE | LNUM_FLOAT | LNUM_LDOUBLE: Generic Lua number mode
++@@ LNUM_INT32 | LNUM_INT64: Integer type
++@@ LNUM_COMPLEX: Define for using 'a+bi' numbers
++@@
++@@ You can combine LNUM_xxx but only one of each group. I.e. '-DLNUM_FLOAT
++@@ -DLNUM_INT32 -DLNUM_COMPLEX' gives float range complex numbers, with 
++@@ 32-bit scalar integer range optimized.
++**
++** These are kept in a separate configuration file mainly for ease of patching
++** (can be changed if integerated to Lua proper).
++*/
++/*#define LNUM_DOUBLE*/
++/*#define LNUM_INT32*/
++#include "lnum_config.h"
++
++/*
+ @@ LUA_API is a mark for all core API functions.
+ @@ LUALIB_API is a mark for all standard library functions.
+ ** CHANGE them if you need to define those functions in some special way.
+@@ -383,22 +409,6 @@
+ 
+ 
+ /*
+-@@ LUAI_BITSINT defines the number of bits in an int.
+-** CHANGE here if Lua cannot automatically detect the number of bits of
+-** your machine. Probably you do not need to change this.
+-*/
+-/* avoid overflows in comparison */
+-#if INT_MAX-20 < 32760
+-#define LUAI_BITSINT	16
+-#elif INT_MAX > 2147483640L
+-/* int has at least 32 bits */
+-#define LUAI_BITSINT	32
+-#else
+-#error "you must define LUA_BITSINT with number of bits in an integer"
+-#endif
+-
+-
+-/*
+ @@ LUAI_UINT32 is an unsigned integer with at least 32 bits.
+ @@ LUAI_INT32 is an signed integer with at least 32 bits.
+ @@ LUAI_UMEM is an unsigned integer big enough to count the total
+@@ -425,6 +435,15 @@
+ #define LUAI_MEM	long
+ #endif
+ 
++/*
++@@ LUAI_BOOL carries 0 and nonzero (normally 1). It may be defined as 'char'
++** (to save memory), 'int' (for speed), 'bool' (for C++) or '_Bool' (C99)
++*/
++#ifdef __cplusplus
++# define LUAI_BOOL bool
++#else
++# define LUAI_BOOL int
++#endif
+ 
+ /*
+ @@ LUAI_MAXCALLS limits the number of nested calls.
+@@ -490,101 +509,6 @@
+ /* }================================================================== */
+ 
+ 
+-
+-
+-/*
+-** {==================================================================
+-@@ LUA_NUMBER is the type of numbers in Lua.
+-** CHANGE the following definitions only if you want to build Lua
+-** with a number type different from double. You may also need to
+-** change lua_number2int & lua_number2integer.
+-** ===================================================================
+-*/
+-
+-#define LUA_NUMBER_DOUBLE
+-#define LUA_NUMBER	double
+-
+-/*
+-@@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
+-@* over a number.
+-*/
+-#define LUAI_UACNUMBER	double
+-
+-
+-/*
+-@@ LUA_NUMBER_SCAN is the format for reading numbers.
+-@@ LUA_NUMBER_FMT is the format for writing numbers.
+-@@ lua_number2str converts a number to a string.
+-@@ LUAI_MAXNUMBER2STR is maximum size of previous conversion.
+-@@ lua_str2number converts a string to a number.
+-*/
+-#define LUA_NUMBER_SCAN		"%lf"
+-#define LUA_NUMBER_FMT		"%.14g"
+-#define lua_number2str(s,n)	sprintf((s), LUA_NUMBER_FMT, (n))
+-#define LUAI_MAXNUMBER2STR	32 /* 16 digits, sign, point, and \0 */
+-#define lua_str2number(s,p)	strtod((s), (p))
+-
+-
+-/*
+-@@ The luai_num* macros define the primitive operations over numbers.
+-*/
+-#if defined(LUA_CORE)
+-#include <math.h>
+-#define luai_numadd(a,b)	((a)+(b))
+-#define luai_numsub(a,b)	((a)-(b))
+-#define luai_nummul(a,b)	((a)*(b))
+-#define luai_numdiv(a,b)	((a)/(b))
+-#define luai_nummod(a,b)	((a) - floor((a)/(b))*(b))
+-#define luai_numpow(a,b)	(pow(a,b))
+-#define luai_numunm(a)		(-(a))
+-#define luai_numeq(a,b)		((a)==(b))
+-#define luai_numlt(a,b)		((a)<(b))
+-#define luai_numle(a,b)		((a)<=(b))
+-#define luai_numisnan(a)	(!luai_numeq((a), (a)))
+-#endif
+-
+-
+-/*
+-@@ lua_number2int is a macro to convert lua_Number to int.
+-@@ lua_number2integer is a macro to convert lua_Number to lua_Integer.
+-** CHANGE them if you know a faster way to convert a lua_Number to
+-** int (with any rounding method and without throwing errors) in your
+-** system. In Pentium machines, a naive typecast from double to int
+-** in C is extremely slow, so any alternative is worth trying.
+-*/
+-
+-/* On a Pentium, resort to a trick */
+-#if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \
+-    (defined(__i386) || defined (_M_IX86) || defined(__i386__))
+-
+-/* On a Microsoft compiler, use assembler */
+-#if defined(_MSC_VER)
+-
+-#define lua_number2int(i,d)   __asm fld d   __asm fistp i
+-#define lua_number2integer(i,n)		lua_number2int(i, n)
+-
+-/* the next trick should work on any Pentium, but sometimes clashes
+-   with a DirectX idiosyncrasy */
+-#else
+-
+-union luai_Cast { double l_d; long l_l; };
+-#define lua_number2int(i,d) \
+-  { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; }
+-#define lua_number2integer(i,n)		lua_number2int(i, n)
+-
+-#endif
+-
+-
+-/* this option always works, but may be slow */
+-#else
+-#define lua_number2int(i,d)	((i)=(int)(d))
+-#define lua_number2integer(i,d)	((i)=(lua_Integer)(d))
+-
+-#endif
+-
+-/* }================================================================== */
+-
+-
+ /*
+ @@ LUAI_USER_ALIGNMENT_T is a type that requires maximum alignment.
+ ** CHANGE it if your system requires alignments larger than double. (For
+@@ -728,28 +652,6 @@ union luai_Cast { double l_d; long l_l; 
+ #define luai_userstateyield(L,n)	((void)L)
+ 
+ 
+-/*
+-@@ LUA_INTFRMLEN is the length modifier for integer conversions
+-@* in 'string.format'.
+-@@ LUA_INTFRM_T is the integer type correspoding to the previous length
+-@* modifier.
+-** CHANGE them if your system supports long long or does not support long.
+-*/
+-
+-#if defined(LUA_USELONGLONG)
+-
+-#define LUA_INTFRMLEN		"ll"
+-#define LUA_INTFRM_T		long long
+-
+-#else
+-
+-#define LUA_INTFRMLEN		"l"
+-#define LUA_INTFRM_T		long
+-
+-#endif
+-
+-
+-
+ /* =================================================================== */
+ 
+ /*
+--- a/src/lundump.c
++++ b/src/lundump.c
+@@ -73,6 +73,13 @@ static lua_Number LoadNumber(LoadState* 
+  return x;
+ }
+ 
++static lua_Integer LoadInteger(LoadState* S)
++{
++ lua_Integer x;
++ LoadVar(S,x);
++ return x;
++}
++
+ static TString* LoadString(LoadState* S)
+ {
+  size_t size;
+@@ -119,6 +126,9 @@ static void LoadConstants(LoadState* S, 
+    case LUA_TNUMBER:
+ 	setnvalue(o,LoadNumber(S));
+ 	break;
++   case LUA_TINT:   /* Integer type saved in bytecode (see lcode.c) */
++	setivalue(o,LoadInteger(S));
++	break;
+    case LUA_TSTRING:
+ 	setsvalue2n(S->L,o,LoadString(S));
+ 	break;
+@@ -223,5 +233,22 @@ void luaU_header (char* h)
+  *h++=(char)sizeof(size_t);
+  *h++=(char)sizeof(Instruction);
+  *h++=(char)sizeof(lua_Number);
+- *h++=(char)(((lua_Number)0.5)==0);		/* is lua_Number integral? */
++
++ /* 
++  * Last byte of header (0/1 in unpatched Lua 5.1.3):
++  *
++  * 0: lua_Number is float or double, lua_Integer not used. (nonpatched only)
++  * 1: lua_Number is integer (nonpatched only)
++  *
++  * +2: LNUM_INT16: sizeof(lua_Integer)
++  * +4: LNUM_INT32: sizeof(lua_Integer)
++  * +8: LNUM_INT64: sizeof(lua_Integer)
++  *
++  * +0x80: LNUM_COMPLEX
++  */
++ *h++ = (char)(sizeof(lua_Integer)
++#ifdef LNUM_COMPLEX
++    | 0x80
++#endif
++    );
+ }
+--- a/src/lvm.c
++++ b/src/lvm.c
+@@ -25,22 +25,35 @@
+ #include "ltable.h"
+ #include "ltm.h"
+ #include "lvm.h"
+-
+-
++#include "llex.h"
++#include "lnum.h"
+ 
+ /* limit for table tag-method chains (to avoid loops) */
+ #define MAXTAGLOOP	100
+ 
+ 
+-const TValue *luaV_tonumber (const TValue *obj, TValue *n) {
+-  lua_Number num;
++/*
++ * If 'obj' is a string, it is tried to be interpreted as a number.
++ */
++const TValue *luaV_tonumber ( const TValue *obj, TValue *n) {
++  lua_Number d;
++  lua_Integer i;
++  
+   if (ttisnumber(obj)) return obj;
+-  if (ttisstring(obj) && luaO_str2d(svalue(obj), &num)) {
+-    setnvalue(n, num);
+-    return n;
+-  }
+-  else
+-    return NULL;
++
++  if (ttisstring(obj)) {
++    switch( luaO_str2d( svalue(obj), &d, &i ) ) {
++        case TK_INT:
++            setivalue(n,i); return n;
++        case TK_NUMBER: 
++            setnvalue(n,d); return n;
++#ifdef LNUM_COMPLEX
++        case TK_NUMBER2:    /* "N.NNNi", != 0 */
++            setnvalue_complex_fast(n, d*I); return n;
++#endif
++        }
++    }
++  return NULL;
+ }
+ 
+ 
+@@ -49,8 +62,7 @@ int luaV_tostring (lua_State *L, StkId o
+     return 0;
+   else {
+     char s[LUAI_MAXNUMBER2STR];
+-    lua_Number n = nvalue(obj);
+-    lua_number2str(s, n);
++    luaO_num2buf(s,obj);
+     setsvalue2s(L, obj, luaS_new(L, s));
+     return 1;
+   }
+@@ -222,59 +234,127 @@ static int l_strcmp (const TString *ls, 
+ }
+ 
+ 
++#ifdef LNUM_COMPLEX
++void error_complex( lua_State *L, const TValue *l, const TValue *r )
++{
++  char buf1[ LUAI_MAXNUMBER2STR ];
++  char buf2[ LUAI_MAXNUMBER2STR ];
++  luaO_num2buf( buf1, l );
++  luaO_num2buf( buf2, r );
++  luaG_runerror( L, "unable to compare: %s with %s", buf1, buf2 );
++  /* no return */
++}
++#endif
++
++
+ int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r) {
+   int res;
+-  if (ttype(l) != ttype(r))
++  int tl,tr;
++  lua_Integer tmp;
++
++  if (!ttype_ext_same(l,r))
+     return luaG_ordererror(L, l, r);
+-  else if (ttisnumber(l))
+-    return luai_numlt(nvalue(l), nvalue(r));
+-  else if (ttisstring(l))
+-    return l_strcmp(rawtsvalue(l), rawtsvalue(r)) < 0;
+-  else if ((res = call_orderTM(L, l, r, TM_LT)) != -1)
++#ifdef LNUM_COMPLEX
++  if ( (nvalue_img(l)!=0) || (nvalue_img(r)!=0) )
++    error_complex( L, l, r );
++#endif
++  tl= ttype(l); tr= ttype(r);
++  if (tl==tr) {  /* clear arithmetics */
++    switch(tl) {
++      case LUA_TINT:      return ivalue(l) < ivalue(r);
++      case LUA_TNUMBER:   return luai_numlt(nvalue_fast(l), nvalue_fast(r));
++      case LUA_TSTRING:   return l_strcmp(rawtsvalue(l), rawtsvalue(r)) < 0;
++    }
++  } else if (tl==LUA_TINT) {  /* l:int, r:num */
++    /* Avoid accuracy losing casts: if 'r' is integer by value, do comparisons
++     * in integer realm. Only otherwise cast 'l' to FP (which might change its
++     * value).
++     */
++    if (tt_integer_valued(r,&tmp)) 
++        return ivalue(l) < tmp;
++    else 
++        return luai_numlt( cast_num(ivalue(l)), nvalue_fast(r) );
++
++  } else if (tl==LUA_TNUMBER) {  /* l:num, r:int */
++    if (tt_integer_valued(l,&tmp)) 
++        return tmp < ivalue(r);
++    else
++        return luai_numlt( nvalue_fast(l), cast_num(ivalue(r)) );
++
++  } else if ((res = call_orderTM(L, l, r, TM_LT)) != -1)
+     return res;
++
+   return luaG_ordererror(L, l, r);
+ }
+ 
+ 
+ static int lessequal (lua_State *L, const TValue *l, const TValue *r) {
+   int res;
+-  if (ttype(l) != ttype(r))
++  int tl, tr;
++  lua_Integer tmp;
++
++  if (!ttype_ext_same(l,r))
+     return luaG_ordererror(L, l, r);
+-  else if (ttisnumber(l))
+-    return luai_numle(nvalue(l), nvalue(r));
+-  else if (ttisstring(l))
+-    return l_strcmp(rawtsvalue(l), rawtsvalue(r)) <= 0;
+-  else if ((res = call_orderTM(L, l, r, TM_LE)) != -1)  /* first try `le' */
++#ifdef LNUM_COMPLEX
++  if ( (nvalue_img(l)!=0) || (nvalue_img(r)!=0) )
++    error_complex( L, l, r );
++#endif
++  tl= ttype(l); tr= ttype(r);
++  if (tl==tr) {  /* clear arithmetics */
++    switch(tl) {
++      case LUA_TINT:      return ivalue(l) <= ivalue(r);
++      case LUA_TNUMBER:   return luai_numle(nvalue_fast(l), nvalue_fast(r));
++      case LUA_TSTRING:   return l_strcmp(rawtsvalue(l), rawtsvalue(r)) <= 0;
++    }
++  }
++  if (tl==LUA_TINT) {  /* l:int, r:num */
++    if (tt_integer_valued(r,&tmp)) 
++        return ivalue(l) <= tmp;
++    else
++        return luai_numle( cast_num(ivalue(l)), nvalue_fast(r) );
++
++  } else if (tl==LUA_TNUMBER) {  /* l:num, r:int */
++    if (tt_integer_valued(l,&tmp)) 
++        return tmp <= ivalue(r);
++    else
++        return luai_numle( nvalue_fast(l), cast_num(ivalue(r)) );
++
++  } else if ((res = call_orderTM(L, l, r, TM_LE)) != -1)  /* first try `le' */
+     return res;
+   else if ((res = call_orderTM(L, r, l, TM_LT)) != -1)  /* else try `lt' */
+     return !res;
++
+   return luaG_ordererror(L, l, r);
+ }
+ 
+ 
+-int luaV_equalval (lua_State *L, const TValue *t1, const TValue *t2) {
++/* Note: 'luaV_equalval()' and 'luaO_rawequalObj()' have largely overlapping
++ *       implementation. LUA_TNIL..LUA_TLIGHTUSERDATA cases could be handled
++ *       simply by the 'default' case here.
++ */
++int luaV_equalval (lua_State *L, const TValue *l, const TValue *r) {
+   const TValue *tm;
+-  lua_assert(ttype(t1) == ttype(t2));
+-  switch (ttype(t1)) {
++  lua_assert(ttype_ext_same(l,r));
++  switch (ttype(l)) {
+     case LUA_TNIL: return 1;
+-    case LUA_TNUMBER: return luai_numeq(nvalue(t1), nvalue(t2));
+-    case LUA_TBOOLEAN: return bvalue(t1) == bvalue(t2);  /* true must be 1 !! */
+-    case LUA_TLIGHTUSERDATA: return pvalue(t1) == pvalue(t2);
++    case LUA_TINT:
++    case LUA_TNUMBER: return luaO_rawequalObj(l,r);
++    case LUA_TBOOLEAN: return bvalue(l) == bvalue(r);  /* true must be 1 !! */
++    case LUA_TLIGHTUSERDATA: return pvalue(l) == pvalue(r);
+     case LUA_TUSERDATA: {
+-      if (uvalue(t1) == uvalue(t2)) return 1;
+-      tm = get_compTM(L, uvalue(t1)->metatable, uvalue(t2)->metatable,
+-                         TM_EQ);
++      if (uvalue(l) == uvalue(r)) return 1;
++      tm = get_compTM(L, uvalue(l)->metatable, uvalue(r)->metatable, TM_EQ);
+       break;  /* will try TM */
+     }
+     case LUA_TTABLE: {
+-      if (hvalue(t1) == hvalue(t2)) return 1;
+-      tm = get_compTM(L, hvalue(t1)->metatable, hvalue(t2)->metatable, TM_EQ);
++      if (hvalue(l) == hvalue(r)) return 1;
++      tm = get_compTM(L, hvalue(l)->metatable, hvalue(r)->metatable, TM_EQ);
+       break;  /* will try TM */
+     }
+-    default: return gcvalue(t1) == gcvalue(t2);
++    default: return gcvalue(l) == gcvalue(r);
+   }
+   if (tm == NULL) return 0;  /* no TM? */
+-  callTMres(L, L->top, tm, t1, t2);  /* call TM */
++  callTMres(L, L->top, tm, l, r);  /* call TM */
+   return !l_isfalse(L->top);
+ }
+ 
+@@ -314,30 +394,6 @@ void luaV_concat (lua_State *L, int tota
+ }
+ 
+ 
+-static void Arith (lua_State *L, StkId ra, const TValue *rb,
+-                   const TValue *rc, TMS op) {
+-  TValue tempb, tempc;
+-  const TValue *b, *c;
+-  if ((b = luaV_tonumber(rb, &tempb)) != NULL &&
+-      (c = luaV_tonumber(rc, &tempc)) != NULL) {
+-    lua_Number nb = nvalue(b), nc = nvalue(c);
+-    switch (op) {
+-      case TM_ADD: setnvalue(ra, luai_numadd(nb, nc)); break;
+-      case TM_SUB: setnvalue(ra, luai_numsub(nb, nc)); break;
+-      case TM_MUL: setnvalue(ra, luai_nummul(nb, nc)); break;
+-      case TM_DIV: setnvalue(ra, luai_numdiv(nb, nc)); break;
+-      case TM_MOD: setnvalue(ra, luai_nummod(nb, nc)); break;
+-      case TM_POW: setnvalue(ra, luai_numpow(nb, nc)); break;
+-      case TM_UNM: setnvalue(ra, luai_numunm(nb)); break;
+-      default: lua_assert(0); break;
+-    }
+-  }
+-  else if (!call_binTM(L, rb, rc, ra, op))
+-    luaG_aritherror(L, rb, rc);
+-}
+-
+-
+-
+ /*
+ ** some macros for common tasks in `luaV_execute'
+ */
+@@ -361,17 +417,154 @@ static void Arith (lua_State *L, StkId r
+ #define Protect(x)	{ L->savedpc = pc; {x;}; base = L->base; }
+ 
+ 
+-#define arith_op(op,tm) { \
+-        TValue *rb = RKB(i); \
+-        TValue *rc = RKC(i); \
+-        if (ttisnumber(rb) && ttisnumber(rc)) { \
+-          lua_Number nb = nvalue(rb), nc = nvalue(rc); \
+-          setnvalue(ra, op(nb, nc)); \
+-        } \
+-        else \
+-          Protect(Arith(L, ra, rb, rc, tm)); \
++/* Note: if called for unary operations, 'rc'=='rb'.
++ */
++static void Arith (lua_State *L, StkId ra, const TValue *rb,
++                   const TValue *rc, TMS op) {
++  TValue tempb, tempc;
++  const TValue *b, *c;
++  lua_Number nb,nc;
++
++  if ((b = luaV_tonumber(rb, &tempb)) != NULL &&
++      (c = luaV_tonumber(rc, &tempc)) != NULL) {
++
++    /* Keep integer arithmetics in the integer realm, if possible.
++     */
++    if (ttisint(b) && ttisint(c)) {
++      lua_Integer ib = ivalue(b), ic = ivalue(c);
++      lua_Integer *ri = &ra->value.i;
++      ra->tt= LUA_TINT;  /* part of 'setivalue(ra)' */
++      switch (op) {
++        case TM_ADD: if (try_addint( ri, ib, ic)) return; break;
++        case TM_SUB: if (try_subint( ri, ib, ic)) return; break;
++        case TM_MUL: if (try_mulint( ri, ib, ic)) return; break;
++        case TM_DIV: if (try_divint( ri, ib, ic)) return; break;
++        case TM_MOD: if (try_modint( ri, ib, ic)) return; break;
++        case TM_POW: if (try_powint( ri, ib, ic)) return; break;
++        case TM_UNM: if (try_unmint( ri, ib)) return; break;
++        default: lua_assert(0);
++      }
++    }
++    /* Fallback to floating point, when leaving range. */
++
++#ifdef LNUM_COMPLEX
++    if ((nvalue_img(b)!=0) || (nvalue_img(c)!=0)) {
++      lua_Complex r;
++      if (op==TM_UNM) {
++        r= -nvalue_complex_fast(b);     /* never an integer (or scalar) */
++        setnvalue_complex_fast( ra, r );
++      } else {
++        lua_Complex bb= nvalue_complex(b), cc= nvalue_complex(c);
++        switch (op) {
++          case TM_ADD: r= bb + cc; break;
++          case TM_SUB: r= bb - cc; break;
++          case TM_MUL: r= bb * cc; break;
++          case TM_DIV: r= bb / cc; break;
++          case TM_MOD: 
++            luaG_runerror(L, "attempt to use %% on complex numbers");  /* no return */
++          case TM_POW: r= luai_vectpow( bb, cc ); break;
++          default: lua_assert(0); r=0;
++        }
++        setnvalue_complex( ra, r );
+       }
++      return;
++    }
++#endif
++    nb = nvalue(b); nc = nvalue(c);
++    switch (op) {
++      case TM_ADD: setnvalue(ra, luai_numadd(nb, nc)); return;
++      case TM_SUB: setnvalue(ra, luai_numsub(nb, nc)); return;
++      case TM_MUL: setnvalue(ra, luai_nummul(nb, nc)); return;
++      case TM_DIV: setnvalue(ra, luai_numdiv(nb, nc)); return;
++      case TM_MOD: setnvalue(ra, luai_nummod(nb, nc)); return;
++      case TM_POW: setnvalue(ra, luai_numpow(nb, nc)); return;
++      case TM_UNM: setnvalue(ra, luai_numunm(nb)); return;
++      default: lua_assert(0);
++    }
++  }
++  
++  /* Either operand not a number */
++  if (!call_binTM(L, rb, rc, ra, op))
++    luaG_aritherror(L, rb, rc);
++}
+ 
++/* Helper macro to sort arithmetic operations into four categories:
++ *  TK_INT: integer - integer operands
++ *  TK_NUMBER: number - number (non complex, either may be integer)
++ *  TK_NUMBER2: complex numbers (at least the other)
++ *  0: non-numeric (at least the other)
++*/
++#ifdef LNUM_COMPLEX
++static inline int arith_mode( const TValue *rb, const TValue *rc ) {
++  if (ttisint(rb) && ttisint(rc)) return TK_INT;
++  if (ttiscomplex(rb) || ttiscomplex(rc)) return TK_NUMBER2;
++  if (ttisnumber(rb) && ttisnumber(rc)) return TK_NUMBER;
++  return 0;
++}
++#else
++# define arith_mode(rb,rc) \
++    ( (ttisint(rb) && ttisint(rc)) ? TK_INT : \
++      (ttisnumber(rb) && ttisnumber(rc)) ? TK_NUMBER : 0 )
++#endif
++
++/* arith_op macro for two operators:
++ * automatically chooses, which function (number, integer, complex) to use
++ */
++#define ARITH_OP2_START( op_num, op_int ) \
++  int failed= 0; \
++  switch( arith_mode(rb,rc) ) { \
++    case TK_INT: \
++      if (op_int ( &(ra)->value.i, ivalue(rb), ivalue(rc) )) \
++        { ra->tt= LUA_TINT; break; } /* else flow through */ \
++    case TK_NUMBER: \
++      setnvalue(ra, op_num ( nvalue(rb), nvalue(rc) )); break;
++
++#define ARITH_OP2_END \
++    default: \
++      failed= 1; break; \
++  } if (!failed) continue;
++
++#define arith_op_continue_scalar( op_num, op_int ) \
++    ARITH_OP2_START( op_num, op_int ) \
++    ARITH_OP2_END
++
++#ifdef LNUM_COMPLEX
++# define arith_op_continue( op_num, op_int, op_complex ) \
++    ARITH_OP2_START( op_num, op_int ) \
++      case TK_NUMBER2: \
++        setnvalue_complex( ra, op_complex ( nvalue_complex(rb), nvalue_complex(rc) ) ); break; \
++    ARITH_OP2_END
++#else
++# define arith_op_continue(op_num,op_int,_) arith_op_continue_scalar(op_num,op_int)
++#endif
++
++/* arith_op macro for one operator:
++ */
++#define ARITH_OP1_START( op_num, op_int ) \
++  int failed= 0; \
++  switch( arith_mode(rb,rb) ) { \
++    case TK_INT: \
++      if (op_int ( &(ra)->value.i, ivalue(rb) )) \
++        { ra->tt= LUA_TINT; break; } /* else flow through */ \
++      case TK_NUMBER: \
++        setnvalue(ra, op_num (nvalue(rb))); break; \
++
++#define ARITH_OP1_END \
++      default: \
++        failed= 1; break; \
++  } if (!failed) continue;
++
++#ifdef LNUM_COMPLEX
++# define arith_op1_continue( op_num, op_int, op_complex ) \
++    ARITH_OP1_START( op_num, op_int ) \
++      case TK_NUMBER2: \
++        setnvalue_complex( ra, op_complex ( nvalue_complex_fast(rb) )); break; \
++    ARITH_OP1_END
++#else
++# define arith_op1_continue( op_num, op_int, _ ) \
++    ARITH_OP1_START( op_num, op_int ) \
++    ARITH_OP1_END
++#endif
+ 
+ 
+ void luaV_execute (lua_State *L, int nexeccalls) {
+@@ -472,38 +665,45 @@ void luaV_execute (lua_State *L, int nex
+         continue;
+       }
+       case OP_ADD: {
+-        arith_op(luai_numadd, TM_ADD);
++        TValue *rb = RKB(i), *rc= RKC(i);
++        arith_op_continue( luai_numadd, try_addint, luai_vectadd );
++        Protect(Arith(L, ra, rb, rc, TM_ADD)); \
+         continue;
+       }
+       case OP_SUB: {
+-        arith_op(luai_numsub, TM_SUB);
++        TValue *rb = RKB(i), *rc= RKC(i);
++        arith_op_continue( luai_numsub, try_subint, luai_vectsub );
++        Protect(Arith(L, ra, rb, rc, TM_SUB));
+         continue;
+       }
+       case OP_MUL: {
+-        arith_op(luai_nummul, TM_MUL);
++        TValue *rb = RKB(i), *rc= RKC(i);
++        arith_op_continue(luai_nummul, try_mulint, luai_vectmul);
++        Protect(Arith(L, ra, rb, rc, TM_MUL));
+         continue;
+       }
+       case OP_DIV: {
+-        arith_op(luai_numdiv, TM_DIV);
++        TValue *rb = RKB(i), *rc= RKC(i);
++        arith_op_continue(luai_numdiv, try_divint, luai_vectdiv);
++        Protect(Arith(L, ra, rb, rc, TM_DIV));
+         continue;
+       }
+       case OP_MOD: {
+-        arith_op(luai_nummod, TM_MOD);
++        TValue *rb = RKB(i), *rc= RKC(i);
++        arith_op_continue_scalar(luai_nummod, try_modint);  /* scalars only */
++        Protect(Arith(L, ra, rb, rc, TM_MOD));
+         continue;
+       }
+       case OP_POW: {
+-        arith_op(luai_numpow, TM_POW);
++        TValue *rb = RKB(i), *rc= RKC(i);
++        arith_op_continue(luai_numpow, try_powint, luai_vectpow);
++        Protect(Arith(L, ra, rb, rc, TM_POW));
+         continue;
+       }
+       case OP_UNM: {
+         TValue *rb = RB(i);
+-        if (ttisnumber(rb)) {
+-          lua_Number nb = nvalue(rb);
+-          setnvalue(ra, luai_numunm(nb));
+-        }
+-        else {
+-          Protect(Arith(L, ra, rb, rb, TM_UNM));
+-        }
++        arith_op1_continue(luai_numunm, try_unmint, luai_vectunm);
++        Protect(Arith(L, ra, rb, rb, TM_UNM));
+         continue;
+       }
+       case OP_NOT: {
+@@ -515,11 +715,11 @@ void luaV_execute (lua_State *L, int nex
+         const TValue *rb = RB(i);
+         switch (ttype(rb)) {
+           case LUA_TTABLE: {
+-            setnvalue(ra, cast_num(luaH_getn(hvalue(rb))));
++            setivalue(ra, luaH_getn(hvalue(rb)));
+             break;
+           }
+           case LUA_TSTRING: {
+-            setnvalue(ra, cast_num(tsvalue(rb)->len));
++            setivalue(ra, tsvalue(rb)->len);
+             break;
+           }
+           default: {  /* try metamethod */
+@@ -652,14 +852,30 @@ void luaV_execute (lua_State *L, int nex
+         }
+       }
+       case OP_FORLOOP: {
+-        lua_Number step = nvalue(ra+2);
+-        lua_Number idx = luai_numadd(nvalue(ra), step); /* increment index */
+-        lua_Number limit = nvalue(ra+1);
+-        if (luai_numlt(0, step) ? luai_numle(idx, limit)
+-                                : luai_numle(limit, idx)) {
+-          dojump(L, pc, GETARG_sBx(i));  /* jump back */
+-          setnvalue(ra, idx);  /* update internal index... */
+-          setnvalue(ra+3, idx);  /* ...and external index */
++        /* If start,step and limit are all integers, we don't need to check
++         * against overflow in the looping.
++         */
++        if (ttisint(ra) && ttisint(ra+1) && ttisint(ra+2)) {
++          lua_Integer step = ivalue(ra+2);
++          lua_Integer idx = ivalue(ra) + step; /* increment index */
++          lua_Integer limit = ivalue(ra+1);
++          if (step > 0 ? (idx <= limit) : (limit <= idx)) {
++            dojump(L, pc, GETARG_sBx(i));  /* jump back */
++            setivalue(ra, idx);  /* update internal index... */
++            setivalue(ra+3, idx);  /* ...and external index */
++          }
++        } else {
++          /* non-integer looping (don't use 'nvalue_fast', some may be integer!) 
++          */
++          lua_Number step = nvalue(ra+2);
++          lua_Number idx = luai_numadd(nvalue(ra), step); /* increment index */
++          lua_Number limit = nvalue(ra+1);
++          if (luai_numlt(0, step) ? luai_numle(idx, limit)
++                                  : luai_numle(limit, idx)) {
++            dojump(L, pc, GETARG_sBx(i));  /* jump back */
++            setnvalue(ra, idx);  /* update internal index... */
++            setnvalue(ra+3, idx);  /* ...and external index */
++          }
+         }
+         continue;
+       }
+@@ -668,13 +884,21 @@ void luaV_execute (lua_State *L, int nex
+         const TValue *plimit = ra+1;
+         const TValue *pstep = ra+2;
+         L->savedpc = pc;  /* next steps may throw errors */
++        /* Using same location for tonumber's both arguments, effectively does
++         * in-place modification (string->number). */
+         if (!tonumber(init, ra))
+           luaG_runerror(L, LUA_QL("for") " initial value must be a number");
+         else if (!tonumber(plimit, ra+1))
+           luaG_runerror(L, LUA_QL("for") " limit must be a number");
+         else if (!tonumber(pstep, ra+2))
+           luaG_runerror(L, LUA_QL("for") " step must be a number");
+-        setnvalue(ra, luai_numsub(nvalue(ra), nvalue(pstep)));
++        /* Step back one value (keep within integers if we can)
++         */
++        if (!( ttisint(ra) && ttisint(pstep) &&
++               try_subint( &ra->value.i, ivalue(ra), ivalue(pstep) ) )) {
++            /* don't use 'nvalue_fast()', values may be integer */
++            setnvalue(ra, luai_numsub(nvalue(ra), nvalue(pstep)));
++        }
+         dojump(L, pc, GETARG_sBx(i));
+         continue;
+       }
+@@ -711,7 +935,7 @@ void luaV_execute (lua_State *L, int nex
+           luaH_resizearray(L, h, last);  /* pre-alloc it at once */
+         for (; n > 0; n--) {
+           TValue *val = ra+n;
+-          setobj2t(L, luaH_setnum(L, h, last--), val);
++          setobj2t(L, luaH_setint(L, h, last--), val);
+           luaC_barriert(L, h, val);
+         }
+         continue;
+--- a/src/lvm.h
++++ b/src/lvm.h
+@@ -15,11 +15,9 @@
+ 
+ #define tostring(L,o) ((ttype(o) == LUA_TSTRING) || (luaV_tostring(L, o)))
+ 
+-#define tonumber(o,n)	(ttype(o) == LUA_TNUMBER || \
+-                         (((o) = luaV_tonumber(o,n)) != NULL))
++#define tonumber(o,n) (ttisnumber(o) || (((o) = luaV_tonumber(o,n)) != NULL))
+ 
+-#define equalobj(L,o1,o2) \
+-	(ttype(o1) == ttype(o2) && luaV_equalval(L, o1, o2))
++#define equalobj(L,o1,o2) (ttype_ext_same(o1,o2) && luaV_equalval(L, o1, o2))
+ 
+ 
+ LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r);
+--- a/src/print.c
++++ b/src/print.c
+@@ -14,6 +14,7 @@
+ #include "lobject.h"
+ #include "lopcodes.h"
+ #include "lundump.h"
++#include "lnum.h"
+ 
+ #define PrintFunction	luaU_print
+ 
+@@ -59,8 +60,16 @@ static void PrintConstant(const Proto* f
+   case LUA_TBOOLEAN:
+ 	printf(bvalue(o) ? "true" : "false");
+ 	break;
++  case LUA_TINT:
++	printf(LUA_INTEGER_FMT,ivalue(o));
++	break;
+   case LUA_TNUMBER:
+-	printf(LUA_NUMBER_FMT,nvalue(o));
++#ifdef LNUM_COMPLEX
++    // TBD: Do we get complex values here?
++    { lua_Number b= nvalue_img_fast(o);
++	  printf( LUA_NUMBER_FMT "%s" LUA_NUMBER_FMT "i", nvalue_fast(o), b>=0 ? "+":"", b ); }
++#endif
++	printf(LUA_NUMBER_FMT,nvalue_fast(o));
+ 	break;
+   case LUA_TSTRING:
+ 	PrintString(rawtsvalue(o));
diff --git a/package/utils/lua/patches/011-lnum-use-double.patch b/package/utils/lua/patches/011-lnum-use-double.patch
new file mode 100644
index 0000000000..14c720bf19
--- /dev/null
+++ b/package/utils/lua/patches/011-lnum-use-double.patch
@@ -0,0 +1,11 @@
+--- a/src/lnum_config.h
++++ b/src/lnum_config.h
+@@ -11,7 +11,7 @@
+ ** Default number modes
+ */
+ #if (!defined LNUM_DOUBLE) && (!defined LNUM_FLOAT) && (!defined LNUM_LDOUBLE)
+-# define LNUM_FLOAT
++# define LNUM_DOUBLE
+ #endif
+ #if (!defined LNUM_INT16) && (!defined LNUM_INT32) && (!defined LNUM_INT64)
+ # define LNUM_INT32
diff --git a/package/utils/lua/patches/015-lnum-ppc-compat.patch b/package/utils/lua/patches/015-lnum-ppc-compat.patch
new file mode 100644
index 0000000000..2ea59f1769
--- /dev/null
+++ b/package/utils/lua/patches/015-lnum-ppc-compat.patch
@@ -0,0 +1,11 @@
+--- a/src/lua.h
++++ b/src/lua.h
+@@ -79,7 +79,7 @@ typedef void * (*lua_Alloc) (void *ud, v
+  *     not acceptable for 5.1, maybe 5.2 onwards?
+  *  9: greater than existing (5.1) type values.
+ */
+-#define LUA_TINT (-2)
++#define LUA_TINT 9
+ 
+ #define LUA_TNIL		0
+ #define LUA_TBOOLEAN		1
diff --git a/package/utils/lua/patches/020-shared_liblua.patch b/package/utils/lua/patches/020-shared_liblua.patch
new file mode 100644
index 0000000000..bcd410f690
--- /dev/null
+++ b/package/utils/lua/patches/020-shared_liblua.patch
@@ -0,0 +1,140 @@
+--- a/Makefile
++++ b/Makefile
+@@ -42,8 +42,8 @@ PLATS= aix ansi bsd freebsd generic linu
+ 
+ # What to install.
+ TO_BIN= lua luac
+-TO_INC= lua.h luaconf.h lualib.h lauxlib.h ../etc/lua.hpp
+-TO_LIB= liblua.a
++TO_INC= lua.h luaconf.h lualib.h lauxlib.h ../etc/lua.hpp lnum_config.h
++TO_LIB= liblua.a liblua.so.$R
+ TO_MAN= lua.1 luac.1
+ 
+ # Lua version and release.
+@@ -63,6 +63,7 @@ install: dummy
+ 	cd src && $(INSTALL_EXEC) $(TO_BIN) $(INSTALL_BIN)
+ 	cd src && $(INSTALL_DATA) $(TO_INC) $(INSTALL_INC)
+ 	cd src && $(INSTALL_DATA) $(TO_LIB) $(INSTALL_LIB)
++	ln -s liblua.so.$R $(INSTALL_LIB)/liblua.so
+ 	cd doc && $(INSTALL_DATA) $(TO_MAN) $(INSTALL_MAN)
+ 
+ ranlib:
+--- a/src/ldo.h
++++ b/src/ldo.h
+@@ -46,7 +46,7 @@ LUAI_FUNC int luaD_pcall (lua_State *L, 
+ LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);
+ LUAI_FUNC void luaD_reallocCI (lua_State *L, int newsize);
+ LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);
+-LUAI_FUNC void luaD_growstack (lua_State *L, int n);
++LUA_API void luaD_growstack (lua_State *L, int n);
+ 
+ LUAI_FUNC void luaD_throw (lua_State *L, int errcode);
+ LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
+--- a/src/lfunc.h
++++ b/src/lfunc.h
+@@ -18,7 +18,7 @@
+                          cast(int, sizeof(TValue *)*((n)-1)))
+ 
+ 
+-LUAI_FUNC Proto *luaF_newproto (lua_State *L);
++LUA_API Proto *luaF_newproto (lua_State *L);
+ LUAI_FUNC Closure *luaF_newCclosure (lua_State *L, int nelems, Table *e);
+ LUAI_FUNC Closure *luaF_newLclosure (lua_State *L, int nelems, Table *e);
+ LUAI_FUNC UpVal *luaF_newupval (lua_State *L);
+--- a/src/lmem.h
++++ b/src/lmem.h
+@@ -38,9 +38,9 @@
+    ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))
+ 
+ 
+-LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
++LUA_API void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
+                                                           size_t size);
+-LUAI_FUNC void *luaM_toobig (lua_State *L);
++LUA_API void *luaM_toobig (lua_State *L);
+ LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size,
+                                size_t size_elem, int limit,
+                                const char *errormsg);
+--- a/src/lstring.h
++++ b/src/lstring.h
+@@ -25,7 +25,7 @@
+ 
+ LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
+ LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, Table *e);
+-LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
++LUA_API TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
+ 
+ 
+ #endif
+--- a/src/lundump.h
++++ b/src/lundump.h
+@@ -17,7 +17,7 @@ LUAI_FUNC Proto* luaU_undump (lua_State*
+ LUAI_FUNC void luaU_header (char* h);
+ 
+ /* dump one chunk; from ldump.c */
+-LUAI_FUNC int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip);
++LUA_API int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip);
+ 
+ #ifdef luac_c
+ /* print one chunk; from print.c */
+--- a/src/Makefile
++++ b/src/Makefile
+@@ -23,6 +23,7 @@ MYLIBS=
+ PLATS= aix ansi bsd freebsd generic linux macosx mingw posix solaris
+ 
+ LUA_A=	liblua.a
++LUA_SO= liblua.so
+ CORE_O=	lapi.o lcode.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o lmem.o \
+ 	lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o  \
+ 	lundump.o lvm.o lzio.o lnum.o
+@@ -33,11 +34,12 @@ LUA_T=	lua
+ LUA_O=	lua.o
+ 
+ LUAC_T=	luac
+-LUAC_O=	luac.o print.o
++LUAC_O=	luac.o print.o lopcodes.o
+ 
+ ALL_O= $(CORE_O) $(LIB_O) $(LUA_O) $(LUAC_O)
+-ALL_T= $(LUA_A) $(LUA_T) $(LUAC_T)
++ALL_T= $(LUA_A) $(LUA_SO) $(LUA_T) $(LUAC_T)
+ ALL_A= $(LUA_A)
++ALL_SO= $(LUA_SO)
+ 
+ default: $(PLAT)
+ 
+@@ -47,14 +49,23 @@ o:	$(ALL_O)
+ 
+ a:	$(ALL_A)
+ 
++so:	$(ALL_SO)
++
+ $(LUA_A): $(CORE_O) $(LIB_O)
+ 	$(AR) $@ $(CORE_O) $(LIB_O)	# DLL needs all object files
+ 	$(RANLIB) $@
+ 
+-$(LUA_T): $(LUA_O) $(LUA_A)
+-	$(CC) -o $@ $(MYLDFLAGS) $(LUA_O) $(LUA_A) $(LIBS)
++$(LUA_SO): $(CORE_O) $(LIB_O)
++	$(CC) -o $@.$(PKG_VERSION) -shared -Wl,-soname="$@.$(PKG_VERSION)" $?
++	ln -fs $@.$(PKG_VERSION) $@
++
++$(LUA_T): $(LUA_O) $(LUA_SO)
++	$(CC) -o $@ -L. -llua $(MYLDFLAGS) $(LUA_O) $(LIBS)
++
++$(LUAC_T): $(LUAC_O) $(LUA_SO)
++	$(CC) -o $@ -L. -llua $(MYLDFLAGS) $(LUAC_O) $(LIBS)
+ 
+-$(LUAC_T): $(LUAC_O) $(LUA_A)
++$(LUAC_T)-host: $(LUAC_O) $(LUA_A)
+ 	$(CC) -o $@ $(MYLDFLAGS) $(LUAC_O) $(LUA_A) $(LIBS)
+ 
+ clean:
+@@ -96,7 +107,7 @@ generic:
+ 	$(MAKE) all MYCFLAGS=
+ 
+ linux:
+-	$(MAKE) all MYCFLAGS=-DLUA_USE_LINUX MYLIBS="-Wl,-E -ldl -lreadline -lhistory -lncurses"
++	$(MAKE) all MYCFLAGS+=-DLUA_USE_LINUX MYLIBS="-Wl,-E -ldl -lreadline -lhistory -lncurses"
+ 
+ macosx:
+ 	$(MAKE) all MYCFLAGS=-DLUA_USE_LINUX MYLIBS="-lreadline"
diff --git a/package/utils/lua/patches/030-archindependent-bytecode.patch b/package/utils/lua/patches/030-archindependent-bytecode.patch
new file mode 100644
index 0000000000..8dfef85d0d
--- /dev/null
+++ b/package/utils/lua/patches/030-archindependent-bytecode.patch
@@ -0,0 +1,111 @@
+--- a/src/ldump.c
++++ b/src/ldump.c
+@@ -67,12 +67,12 @@ static void DumpString(const TString* s,
+ {
+  if (s==NULL || getstr(s)==NULL)
+  {
+-  size_t size=0;
++  unsigned int size=0;
+   DumpVar(size,D);
+  }
+  else
+  {
+-  size_t size=s->tsv.len+1;		/* include trailing '\0' */
++  unsigned int size=s->tsv.len+1;		/* include trailing '\0' */
+   DumpVar(size,D);
+   DumpBlock(getstr(s),size,D);
+  }
+--- a/src/lundump.c
++++ b/src/lundump.c
+@@ -25,6 +25,7 @@ typedef struct {
+  ZIO* Z;
+  Mbuffer* b;
+  const char* name;
++ int swap;
+ } LoadState;
+ 
+ #ifdef LUAC_TRUST_BINARIES
+@@ -40,7 +41,6 @@ static void error(LoadState* S, const ch
+ }
+ #endif
+ 
+-#define LoadMem(S,b,n,size)	LoadBlock(S,b,(n)*(size))
+ #define	LoadByte(S)		(lu_byte)LoadChar(S)
+ #define LoadVar(S,x)		LoadMem(S,&x,1,sizeof(x))
+ #define LoadVector(S,b,n,size)	LoadMem(S,b,n,size)
+@@ -51,6 +51,49 @@ static void LoadBlock(LoadState* S, void
+  IF (r!=0, "unexpected end");
+ }
+ 
++static void LoadMem (LoadState* S, void* b, int n, size_t size)
++{
++ LoadBlock(S,b,n*size);
++ if (S->swap)
++ {
++  char* p=(char*) b;
++  char c;
++  switch (size)
++  {
++   case 1:
++  	break;
++   case 2:
++	while (n--)
++	{
++	 c=p[0]; p[0]=p[1]; p[1]=c;
++	 p+=2;
++	}
++  	break;
++   case 4:
++	while (n--)
++	{
++	 c=p[0]; p[0]=p[3]; p[3]=c;
++	 c=p[1]; p[1]=p[2]; p[2]=c;
++	 p+=4;
++	}
++  	break;
++   case 8:
++	while (n--)
++	{
++	 c=p[0]; p[0]=p[7]; p[7]=c;
++	 c=p[1]; p[1]=p[6]; p[6]=c;
++	 c=p[2]; p[2]=p[5]; p[5]=c;
++	 c=p[3]; p[3]=p[4]; p[4]=c;
++	 p+=8;
++	}
++  	break;
++   default:
++   	IF(1, "bad size");
++  	break;
++  }
++ }
++}
++
+ static int LoadChar(LoadState* S)
+ {
+  char x;
+@@ -82,7 +125,7 @@ static lua_Integer LoadInteger(LoadState
+ 
+ static TString* LoadString(LoadState* S)
+ {
+- size_t size;
++ unsigned int size;
+  LoadVar(S,size);
+  if (size==0)
+   return NULL;
+@@ -196,6 +239,7 @@ static void LoadHeader(LoadState* S)
+  char s[LUAC_HEADERSIZE];
+  luaU_header(h);
+  LoadBlock(S,s,LUAC_HEADERSIZE);
++ S->swap=(s[6]!=h[6]); s[6]=h[6];
+  IF (memcmp(h,s,LUAC_HEADERSIZE)!=0, "bad header");
+ }
+ 
+@@ -230,7 +274,7 @@ void luaU_header (char* h)
+  *h++=(char)LUAC_FORMAT;
+  *h++=(char)*(char*)&x;				/* endianness */
+  *h++=(char)sizeof(int);
+- *h++=(char)sizeof(size_t);
++ *h++=(char)sizeof(unsigned int);
+  *h++=(char)sizeof(Instruction);
+  *h++=(char)sizeof(lua_Number);
+ 
diff --git a/package/utils/lua/patches/100-no_readline.patch b/package/utils/lua/patches/100-no_readline.patch
new file mode 100644
index 0000000000..0350e470ad
--- /dev/null
+++ b/package/utils/lua/patches/100-no_readline.patch
@@ -0,0 +1,49 @@
+--- a/src/luaconf.h
++++ b/src/luaconf.h
+@@ -38,7 +38,6 @@
+ #if defined(LUA_USE_LINUX)
+ #define LUA_USE_POSIX
+ #define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
+-#define LUA_USE_READLINE	/* needs some extra libraries */
+ #endif
+ 
+ #if defined(LUA_USE_MACOSX)
+--- a/src/Makefile
++++ b/src/Makefile
+@@ -17,6 +17,7 @@ LIBS= -lm $(MYLIBS)
+ MYCFLAGS=
+ MYLDFLAGS=
+ MYLIBS=
++# USE_READLINE=1
+ 
+ # == END OF USER SETTINGS. NO NEED TO CHANGE ANYTHING BELOW THIS LINE =========
+ 
+@@ -86,7 +87,7 @@ echo:
+ 	@echo "MYLIBS = $(MYLIBS)"
+ 
+ # convenience targets for popular platforms
+-
++RFLAG=$(if $(USE_READLINE),-DLUA_USE_READLINE)
+ none:
+ 	@echo "Please choose a platform:"
+ 	@echo "   $(PLATS)"
+@@ -101,16 +102,16 @@ bsd:
+ 	$(MAKE) all MYCFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN" MYLIBS="-Wl,-E"
+ 
+ freebsd:
+-	$(MAKE) all MYCFLAGS="-DLUA_USE_LINUX" MYLIBS="-Wl,-E -lreadline"
++	$(MAKE) all MYCFLAGS="-DLUA_USE_LINUX $(RFLAG)" MYLIBS="-Wl,-E$(if $(USE_READLINE), -lreadline)"
+ 
+ generic:
+ 	$(MAKE) all MYCFLAGS=
+ 
+ linux:
+-	$(MAKE) all MYCFLAGS+=-DLUA_USE_LINUX MYLIBS="-Wl,-E -ldl -lreadline -lhistory -lncurses"
++	$(MAKE) all MYCFLAGS+="-DLUA_USE_LINUX $(RFLAG)" MYLIBS="-Wl,-E -ldl $(if $(USE_READLINE), -lreadline -lhistory -lncurses)"
+ 
+ macosx:
+-	$(MAKE) all MYCFLAGS=-DLUA_USE_LINUX MYLIBS="-lreadline"
++	$(MAKE) all MYCFLAGS=-DLUA_USE_LINUX $(if $(USE_READLINE), MYLIBS="-lreadline")
+ # use this on Mac OS X 10.3-
+ #	$(MAKE) all MYCFLAGS=-DLUA_USE_MACOSX
+ 
diff --git a/package/utils/lua/patches/200-lua-path.patch b/package/utils/lua/patches/200-lua-path.patch
new file mode 100644
index 0000000000..054457744a
--- /dev/null
+++ b/package/utils/lua/patches/200-lua-path.patch
@@ -0,0 +1,15 @@
+--- a/src/luaconf.h
++++ b/src/luaconf.h
+@@ -95,9 +95,9 @@
+ 	".\\?.dll;"  LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll"
+ 
+ #else
+-#define LUA_ROOT	"/usr/local/"
+-#define LUA_LDIR	LUA_ROOT "share/lua/5.1/"
+-#define LUA_CDIR	LUA_ROOT "lib/lua/5.1/"
++#define LUA_ROOT	"/usr/"
++#define LUA_LDIR	LUA_ROOT "share/lua/"
++#define LUA_CDIR	LUA_ROOT "lib/lua/"
+ #define LUA_PATH_DEFAULT  \
+ 		"./?.lua;"  LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
+ 		            LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua"
diff --git a/package/utils/lua/patches/300-opcode_performance.patch b/package/utils/lua/patches/300-opcode_performance.patch
new file mode 100644
index 0000000000..5fbb87388a
--- /dev/null
+++ b/package/utils/lua/patches/300-opcode_performance.patch
@@ -0,0 +1,363 @@
+--- a/src/lvm.c
++++ b/src/lvm.c
+@@ -31,6 +31,9 @@
+ /* limit for table tag-method chains (to avoid loops) */
+ #define MAXTAGLOOP	100
+ 
++#ifdef __GNUC__
++#define COMPUTED_GOTO 1
++#endif
+ 
+ /*
+  * If 'obj' is a string, it is tried to be interpreted as a number.
+@@ -566,12 +569,63 @@ static inline int arith_mode( const TVal
+     ARITH_OP1_END
+ #endif
+ 
++#ifdef COMPUTED_GOTO
++#define OPCODE_TARGET(op) DO_OP_##op:
++#define CALL_OPCODE(op) goto *opcodes[op];
++#define OPCODE_PTR(op) [OP_##op] = &&DO_OP_##op
++#else
++#define OPCODE_TARGET(op) case OP_##op:
++#define CALL_OPCODE(op) switch (op)
++#endif
++
+ 
+ void luaV_execute (lua_State *L, int nexeccalls) {
+   LClosure *cl;
+   StkId base;
+   TValue *k;
+   const Instruction *pc;
++#ifdef COMPUTED_GOTO
++  static const void *opcodes[] = {
++   OPCODE_PTR(MOVE),
++   OPCODE_PTR(LOADK),
++   OPCODE_PTR(LOADBOOL),
++   OPCODE_PTR(LOADNIL),
++   OPCODE_PTR(GETUPVAL),
++   OPCODE_PTR(GETGLOBAL),
++   OPCODE_PTR(GETTABLE),
++   OPCODE_PTR(SETGLOBAL),
++   OPCODE_PTR(SETUPVAL),
++   OPCODE_PTR(SETTABLE),
++   OPCODE_PTR(NEWTABLE),
++   OPCODE_PTR(SELF),
++   OPCODE_PTR(ADD),
++   OPCODE_PTR(SUB),
++   OPCODE_PTR(MUL),
++   OPCODE_PTR(DIV),
++   OPCODE_PTR(MOD),
++   OPCODE_PTR(POW),
++   OPCODE_PTR(UNM),
++   OPCODE_PTR(NOT),
++   OPCODE_PTR(LEN),
++   OPCODE_PTR(CONCAT),
++   OPCODE_PTR(JMP),
++   OPCODE_PTR(EQ),
++   OPCODE_PTR(LT),
++   OPCODE_PTR(LE),
++   OPCODE_PTR(TEST),
++   OPCODE_PTR(TESTSET),
++   OPCODE_PTR(CALL),
++   OPCODE_PTR(TAILCALL),
++   OPCODE_PTR(RETURN),
++   OPCODE_PTR(FORLOOP),
++   OPCODE_PTR(FORPREP),
++   OPCODE_PTR(TFORLOOP),
++   OPCODE_PTR(SETLIST),
++   OPCODE_PTR(CLOSE),
++   OPCODE_PTR(CLOSURE),
++   OPCODE_PTR(VARARG)
++  };
++#endif
+  reentry:  /* entry point */
+   lua_assert(isLua(L->ci));
+   pc = L->savedpc;
+@@ -596,33 +650,33 @@ void luaV_execute (lua_State *L, int nex
+     lua_assert(base == L->base && L->base == L->ci->base);
+     lua_assert(base <= L->top && L->top <= L->stack + L->stacksize);
+     lua_assert(L->top == L->ci->top || luaG_checkopenop(i));
+-    switch (GET_OPCODE(i)) {
+-      case OP_MOVE: {
++    CALL_OPCODE(GET_OPCODE(i)) {
++      OPCODE_TARGET(MOVE) {
+         setobjs2s(L, ra, RB(i));
+         continue;
+       }
+-      case OP_LOADK: {
++      OPCODE_TARGET(LOADK) {
+         setobj2s(L, ra, KBx(i));
+         continue;
+       }
+-      case OP_LOADBOOL: {
++      OPCODE_TARGET(LOADBOOL) {
+         setbvalue(ra, GETARG_B(i));
+         if (GETARG_C(i)) pc++;  /* skip next instruction (if C) */
+         continue;
+       }
+-      case OP_LOADNIL: {
++      OPCODE_TARGET(LOADNIL) {
+         TValue *rb = RB(i);
+         do {
+           setnilvalue(rb--);
+         } while (rb >= ra);
+         continue;
+       }
+-      case OP_GETUPVAL: {
++      OPCODE_TARGET(GETUPVAL) {
+         int b = GETARG_B(i);
+         setobj2s(L, ra, cl->upvals[b]->v);
+         continue;
+       }
+-      case OP_GETGLOBAL: {
++      OPCODE_TARGET(GETGLOBAL) {
+         TValue g;
+         TValue *rb = KBx(i);
+         sethvalue(L, &g, cl->env);
+@@ -630,88 +684,88 @@ void luaV_execute (lua_State *L, int nex
+         Protect(luaV_gettable(L, &g, rb, ra));
+         continue;
+       }
+-      case OP_GETTABLE: {
++      OPCODE_TARGET(GETTABLE) {
+         Protect(luaV_gettable(L, RB(i), RKC(i), ra));
+         continue;
+       }
+-      case OP_SETGLOBAL: {
++      OPCODE_TARGET(SETGLOBAL) {
+         TValue g;
+         sethvalue(L, &g, cl->env);
+         lua_assert(ttisstring(KBx(i)));
+         Protect(luaV_settable(L, &g, KBx(i), ra));
+         continue;
+       }
+-      case OP_SETUPVAL: {
++      OPCODE_TARGET(SETUPVAL) {
+         UpVal *uv = cl->upvals[GETARG_B(i)];
+         setobj(L, uv->v, ra);
+         luaC_barrier(L, uv, ra);
+         continue;
+       }
+-      case OP_SETTABLE: {
++      OPCODE_TARGET(SETTABLE) {
+         Protect(luaV_settable(L, ra, RKB(i), RKC(i)));
+         continue;
+       }
+-      case OP_NEWTABLE: {
++      OPCODE_TARGET(NEWTABLE) {
+         int b = GETARG_B(i);
+         int c = GETARG_C(i);
+         sethvalue(L, ra, luaH_new(L, luaO_fb2int(b), luaO_fb2int(c)));
+         Protect(luaC_checkGC(L));
+         continue;
+       }
+-      case OP_SELF: {
++      OPCODE_TARGET(SELF) {
+         StkId rb = RB(i);
+         setobjs2s(L, ra+1, rb);
+         Protect(luaV_gettable(L, rb, RKC(i), ra));
+         continue;
+       }
+-      case OP_ADD: {
++      OPCODE_TARGET(ADD) {
+         TValue *rb = RKB(i), *rc= RKC(i);
+         arith_op_continue( luai_numadd, try_addint, luai_vectadd );
+         Protect(Arith(L, ra, rb, rc, TM_ADD)); \
+         continue;
+       }
+-      case OP_SUB: {
++      OPCODE_TARGET(SUB) {
+         TValue *rb = RKB(i), *rc= RKC(i);
+         arith_op_continue( luai_numsub, try_subint, luai_vectsub );
+         Protect(Arith(L, ra, rb, rc, TM_SUB));
+         continue;
+       }
+-      case OP_MUL: {
++      OPCODE_TARGET(MUL) {
+         TValue *rb = RKB(i), *rc= RKC(i);
+         arith_op_continue(luai_nummul, try_mulint, luai_vectmul);
+         Protect(Arith(L, ra, rb, rc, TM_MUL));
+         continue;
+       }
+-      case OP_DIV: {
++      OPCODE_TARGET(DIV) {
+         TValue *rb = RKB(i), *rc= RKC(i);
+         arith_op_continue(luai_numdiv, try_divint, luai_vectdiv);
+         Protect(Arith(L, ra, rb, rc, TM_DIV));
+         continue;
+       }
+-      case OP_MOD: {
++      OPCODE_TARGET(MOD) {
+         TValue *rb = RKB(i), *rc= RKC(i);
+         arith_op_continue_scalar(luai_nummod, try_modint);  /* scalars only */
+         Protect(Arith(L, ra, rb, rc, TM_MOD));
+         continue;
+       }
+-      case OP_POW: {
++      OPCODE_TARGET(POW) {
+         TValue *rb = RKB(i), *rc= RKC(i);
+         arith_op_continue(luai_numpow, try_powint, luai_vectpow);
+         Protect(Arith(L, ra, rb, rc, TM_POW));
+         continue;
+       }
+-      case OP_UNM: {
++      OPCODE_TARGET(UNM) {
+         TValue *rb = RB(i);
+         arith_op1_continue(luai_numunm, try_unmint, luai_vectunm);
+         Protect(Arith(L, ra, rb, rb, TM_UNM));
+         continue;
+       }
+-      case OP_NOT: {
++      OPCODE_TARGET(NOT) {
+         int res = l_isfalse(RB(i));  /* next assignment may change this value */
+         setbvalue(ra, res);
+         continue;
+       }
+-      case OP_LEN: {
++      OPCODE_TARGET(LEN) {
+         const TValue *rb = RB(i);
+         switch (ttype(rb)) {
+           case LUA_TTABLE: {
+@@ -731,18 +785,18 @@ void luaV_execute (lua_State *L, int nex
+         }
+         continue;
+       }
+-      case OP_CONCAT: {
++      OPCODE_TARGET(CONCAT) {
+         int b = GETARG_B(i);
+         int c = GETARG_C(i);
+         Protect(luaV_concat(L, c-b+1, c); luaC_checkGC(L));
+         setobjs2s(L, RA(i), base+b);
+         continue;
+       }
+-      case OP_JMP: {
++      OPCODE_TARGET(JMP) {
+         dojump(L, pc, GETARG_sBx(i));
+         continue;
+       }
+-      case OP_EQ: {
++      OPCODE_TARGET(EQ) {
+         TValue *rb = RKB(i);
+         TValue *rc = RKC(i);
+         Protect(
+@@ -752,7 +806,7 @@ void luaV_execute (lua_State *L, int nex
+         pc++;
+         continue;
+       }
+-      case OP_LT: {
++      OPCODE_TARGET(LT) {
+         Protect(
+           if (luaV_lessthan(L, RKB(i), RKC(i)) == GETARG_A(i))
+             dojump(L, pc, GETARG_sBx(*pc));
+@@ -760,7 +814,7 @@ void luaV_execute (lua_State *L, int nex
+         pc++;
+         continue;
+       }
+-      case OP_LE: {
++      OPCODE_TARGET(LE) {
+         Protect(
+           if (lessequal(L, RKB(i), RKC(i)) == GETARG_A(i))
+             dojump(L, pc, GETARG_sBx(*pc));
+@@ -768,13 +822,13 @@ void luaV_execute (lua_State *L, int nex
+         pc++;
+         continue;
+       }
+-      case OP_TEST: {
++      OPCODE_TARGET(TEST) {
+         if (l_isfalse(ra) != GETARG_C(i))
+           dojump(L, pc, GETARG_sBx(*pc));
+         pc++;
+         continue;
+       }
+-      case OP_TESTSET: {
++      OPCODE_TARGET(TESTSET) {
+         TValue *rb = RB(i);
+         if (l_isfalse(rb) != GETARG_C(i)) {
+           setobjs2s(L, ra, rb);
+@@ -783,7 +837,7 @@ void luaV_execute (lua_State *L, int nex
+         pc++;
+         continue;
+       }
+-      case OP_CALL: {
++      OPCODE_TARGET(CALL) {
+         int b = GETARG_B(i);
+         int nresults = GETARG_C(i) - 1;
+         if (b != 0) L->top = ra+b;  /* else previous instruction set top */
+@@ -804,7 +858,7 @@ void luaV_execute (lua_State *L, int nex
+           }
+         }
+       }
+-      case OP_TAILCALL: {
++      OPCODE_TARGET(TAILCALL) {
+         int b = GETARG_B(i);
+         if (b != 0) L->top = ra+b;  /* else previous instruction set top */
+         L->savedpc = pc;
+@@ -836,7 +890,7 @@ void luaV_execute (lua_State *L, int nex
+           }
+         }
+       }
+-      case OP_RETURN: {
++      OPCODE_TARGET(RETURN) {
+         int b = GETARG_B(i);
+         if (b != 0) L->top = ra+b-1;
+         if (L->openupval) luaF_close(L, base);
+@@ -851,7 +905,7 @@ void luaV_execute (lua_State *L, int nex
+           goto reentry;
+         }
+       }
+-      case OP_FORLOOP: {
++      OPCODE_TARGET(FORLOOP) {
+         /* If start,step and limit are all integers, we don't need to check
+          * against overflow in the looping.
+          */
+@@ -879,7 +933,7 @@ void luaV_execute (lua_State *L, int nex
+         }
+         continue;
+       }
+-      case OP_FORPREP: {
++      OPCODE_TARGET(FORPREP) {
+         const TValue *init = ra;
+         const TValue *plimit = ra+1;
+         const TValue *pstep = ra+2;
+@@ -902,7 +956,7 @@ void luaV_execute (lua_State *L, int nex
+         dojump(L, pc, GETARG_sBx(i));
+         continue;
+       }
+-      case OP_TFORLOOP: {
++      OPCODE_TARGET(TFORLOOP) {
+         StkId cb = ra + 3;  /* call base */
+         setobjs2s(L, cb+2, ra+2);
+         setobjs2s(L, cb+1, ra+1);
+@@ -918,7 +972,7 @@ void luaV_execute (lua_State *L, int nex
+         pc++;
+         continue;
+       }
+-      case OP_SETLIST: {
++      OPCODE_TARGET(SETLIST) {
+         int n = GETARG_B(i);
+         int c = GETARG_C(i);
+         int last;
+@@ -940,11 +994,11 @@ void luaV_execute (lua_State *L, int nex
+         }
+         continue;
+       }
+-      case OP_CLOSE: {
++      OPCODE_TARGET(CLOSE) {
+         luaF_close(L, ra);
+         continue;
+       }
+-      case OP_CLOSURE: {
++      OPCODE_TARGET(CLOSURE) {
+         Proto *p;
+         Closure *ncl;
+         int nup, j;
+@@ -964,7 +1018,7 @@ void luaV_execute (lua_State *L, int nex
+         Protect(luaC_checkGC(L));
+         continue;
+       }
+-      case OP_VARARG: {
++      OPCODE_TARGET(VARARG) {
+         int b = GETARG_B(i) - 1;
+         int j;
+         CallInfo *ci = L->ci;