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Diffstat (limited to 'uclibc-crosstools-gcc-4.4.2-1/usr/include/math.h')
| -rw-r--r-- | uclibc-crosstools-gcc-4.4.2-1/usr/include/math.h | 468 |
1 files changed, 468 insertions, 0 deletions
diff --git a/uclibc-crosstools-gcc-4.4.2-1/usr/include/math.h b/uclibc-crosstools-gcc-4.4.2-1/usr/include/math.h new file mode 100644 index 0000000..c50b2e7 --- /dev/null +++ b/uclibc-crosstools-gcc-4.4.2-1/usr/include/math.h @@ -0,0 +1,468 @@ +/* Declarations for math functions. + Copyright (C) 1991-1993, 1995-1999, 2001, 2002, 2004, 2006 + Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* + * ISO C99 Standard: 7.12 Mathematics <math.h> + */ + +#ifndef _MATH_H +#define _MATH_H 1 + +#include <features.h> + +__BEGIN_DECLS + +/* Get machine-dependent HUGE_VAL value (returned on overflow). + On all IEEE754 machines, this is +Infinity. */ +#include <bits/huge_val.h> +#ifdef __USE_ISOC99 +# include <bits/huge_valf.h> +# include <bits/huge_vall.h> + +/* Get machine-dependent INFINITY value. */ +# include <bits/inf.h> + +/* Get machine-dependent NAN value (returned for some domain errors). */ +# include <bits/nan.h> +#endif /* __USE_ISOC99 */ + +/* Get general and ISO C99 specific information. */ +#include <bits/mathdef.h> + +/* The file <bits/mathcalls.h> contains the prototypes for all the + actual math functions. These macros are used for those prototypes, + so we can easily declare each function as both `name' and `__name', + and can declare the float versions `namef' and `__namef'. */ + +#define __MATHCALL(function,suffix, args) \ + __MATHDECL (_Mdouble_,function,suffix, args) +#define __MATHDECL(type, function,suffix, args) \ + __MATHDECL_1(type, function,suffix, args); \ + __MATHDECL_1(type, __CONCAT(__,function),suffix, args) +#define __MATHCALLX(function,suffix, args, attrib) \ + __MATHDECLX (_Mdouble_,function,suffix, args, attrib) +#define __MATHDECLX(type, function,suffix, args, attrib) \ + __MATHDECL_1(type, function,suffix, args) __attribute__ (attrib); \ + __MATHDECL_1(type, __CONCAT(__,function),suffix, args) __attribute__ (attrib) +#define __MATHDECL_1(type, function,suffix, args) \ + extern type __MATH_PRECNAME(function,suffix) args __THROW + +#define _Mdouble_ double +#define __MATH_PRECNAME(name,r) __CONCAT(name,r) +# define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_STD +# define _Mdouble_END_NAMESPACE __END_NAMESPACE_STD +#include <bits/mathcalls.h> +#undef _Mdouble_ +#undef _Mdouble_BEGIN_NAMESPACE +#undef _Mdouble_END_NAMESPACE +#undef __MATH_PRECNAME + +#if defined __USE_MISC || defined __USE_ISOC99 + + +/* Include the file of declarations again, this time using `float' + instead of `double' and appending f to each function name. */ + +# ifndef _Mfloat_ +# define _Mfloat_ float +# endif +# define _Mdouble_ _Mfloat_ +# ifdef __STDC__ +# define __MATH_PRECNAME(name,r) name##f##r +# else +# define __MATH_PRECNAME(name,r) name/**/f/**/r +# endif +# define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_C99 +# define _Mdouble_END_NAMESPACE __END_NAMESPACE_C99 +# include <bits/mathcalls.h> +# undef _Mdouble_ +# undef _Mdouble_BEGIN_NAMESPACE +# undef _Mdouble_END_NAMESPACE +# undef __MATH_PRECNAME + +# if (__STDC__ - 0 || __GNUC__ - 0) \ + && (!defined __NO_LONG_DOUBLE_MATH || defined __LDBL_COMPAT) +# ifdef __LDBL_COMPAT + +# ifdef __USE_ISOC99 +extern float __nldbl_nexttowardf (float __x, long double __y) + __THROW __attribute__ ((__const__)); +# ifdef __REDIRECT_NTH +extern float __REDIRECT_NTH (nexttowardf, (float __x, long double __y), + __nldbl_nexttowardf) + __attribute__ ((__const__)); +extern double __REDIRECT_NTH (nexttoward, (double __x, long double __y), + nextafter) __attribute__ ((__const__)); +extern long double __REDIRECT_NTH (nexttowardl, + (long double __x, long double __y), + nextafter) __attribute__ ((__const__)); +# endif +# endif + +/* Include the file of declarations again, this time using `long double' + instead of `double' and appending l to each function name. */ + +# undef __MATHDECL_1 +# define __MATHDECL_2(type, function,suffix, args, alias) \ + extern type __REDIRECT_NTH(__MATH_PRECNAME(function,suffix), \ + args, alias) +# define __MATHDECL_1(type, function,suffix, args) \ + __MATHDECL_2(type, function,suffix, args, __CONCAT(function,suffix)) +# endif + +# ifndef _Mlong_double_ +# define _Mlong_double_ long double +# endif +# define _Mdouble_ _Mlong_double_ +# ifdef __STDC__ +# define __MATH_PRECNAME(name,r) name##l##r +# else +# define __MATH_PRECNAME(name,r) name/**/l/**/r +# endif +# define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_C99 +# define _Mdouble_END_NAMESPACE __END_NAMESPACE_C99 +# include <bits/mathcalls.h> +# undef _Mdouble_ +# undef _Mdouble_BEGIN_NAMESPACE +# undef _Mdouble_END_NAMESPACE +# undef __MATH_PRECNAME + +# endif /* __STDC__ || __GNUC__ */ + +#endif /* Use misc or ISO C99. */ +#undef __MATHDECL_1 +#undef __MATHDECL +#undef __MATHCALL + + +#if defined __USE_MISC || defined __USE_XOPEN +/* This variable is used by `gamma' and `lgamma'. */ +extern int signgam; +#endif + + +/* ISO C99 defines some generic macros which work on any data type. */ +#ifdef __USE_ISOC99 + +/* Get the architecture specific values describing the floating-point + evaluation. The following symbols will get defined: + + float_t floating-point type at least as wide as `float' used + to evaluate `float' expressions + double_t floating-point type at least as wide as `double' used + to evaluate `double' expressions + + FLT_EVAL_METHOD + Defined to + 0 if `float_t' is `float' and `double_t' is `double' + 1 if `float_t' and `double_t' are `double' + 2 if `float_t' and `double_t' are `long double' + else `float_t' and `double_t' are unspecified + + INFINITY representation of the infinity value of type `float' + + FP_FAST_FMA + FP_FAST_FMAF + FP_FAST_FMAL + If defined it indicates that the `fma' function + generally executes about as fast as a multiply and an add. + This macro is defined only iff the `fma' function is + implemented directly with a hardware multiply-add instructions. + + FP_ILOGB0 Expands to a value returned by `ilogb (0.0)'. + FP_ILOGBNAN Expands to a value returned by `ilogb (NAN)'. + + DECIMAL_DIG Number of decimal digits supported by conversion between + decimal and all internal floating-point formats. + +*/ + +/* All floating-point numbers can be put in one of these categories. */ +enum + { + FP_NAN, +# define FP_NAN FP_NAN + FP_INFINITE, +# define FP_INFINITE FP_INFINITE + FP_ZERO, +# define FP_ZERO FP_ZERO + FP_SUBNORMAL, +# define FP_SUBNORMAL FP_SUBNORMAL + FP_NORMAL +# define FP_NORMAL FP_NORMAL + }; + +/* Return number of classification appropriate for X. */ +# ifdef __NO_LONG_DOUBLE_MATH +# define fpclassify(x) \ + (sizeof (x) == sizeof (float) ? __fpclassifyf (x) : __fpclassify (x)) +# else +# define fpclassify(x) \ + (sizeof (x) == sizeof (float) \ + ? __fpclassifyf (x) \ + : sizeof (x) == sizeof (double) \ + ? __fpclassify (x) : __fpclassifyl (x)) +# endif + +/* Return nonzero value if sign of X is negative. */ +# ifdef __NO_LONG_DOUBLE_MATH +# define signbit(x) \ + (sizeof (x) == sizeof (float) ? __signbitf (x) : __signbit (x)) +# else +# define signbit(x) \ + (sizeof (x) == sizeof (float) \ + ? __signbitf (x) \ + : sizeof (x) == sizeof (double) \ + ? __signbit (x) : __signbitl (x)) +# endif + +/* Return nonzero value if X is not +-Inf or NaN. */ +# ifdef __NO_LONG_DOUBLE_MATH +# define isfinite(x) \ + (sizeof (x) == sizeof (float) ? __finitef (x) : __finite (x)) +# else +# define isfinite(x) \ + (sizeof (x) == sizeof (float) \ + ? __finitef (x) \ + : sizeof (x) == sizeof (double) \ + ? __finite (x) : __finitel (x)) +# endif + +/* Return nonzero value if X is neither zero, subnormal, Inf, nor NaN. */ +# define isnormal(x) (fpclassify (x) == FP_NORMAL) + +/* Return nonzero value if X is a NaN. We could use `fpclassify' but + we already have this functions `__isnan' and it is faster. */ +# ifdef __NO_LONG_DOUBLE_MATH +# define isnan(x) \ + (sizeof (x) == sizeof (float) ? __isnanf (x) : __isnan (x)) +# else +# define isnan(x) \ + (sizeof (x) == sizeof (float) \ + ? __isnanf (x) \ + : sizeof (x) == sizeof (double) \ + ? __isnan (x) : __isnanl (x)) +# endif + +/* Return nonzero value is X is positive or negative infinity. */ +# ifdef __NO_LONG_DOUBLE_MATH +# define isinf(x) \ + (sizeof (x) == sizeof (float) ? __isinff (x) : __isinf (x)) +# else +# define isinf(x) \ + (sizeof (x) == sizeof (float) \ + ? __isinff (x) \ + : sizeof (x) == sizeof (double) \ + ? __isinf (x) : __isinfl (x)) +# endif + +/* Bitmasks for the math_errhandling macro. */ +# define MATH_ERRNO 1 /* errno set by math functions. */ +# define MATH_ERREXCEPT 2 /* Exceptions raised by math functions. */ + +#endif /* Use ISO C99. */ + +#ifdef __USE_MISC +/* Support for various different standard error handling behaviors. */ +typedef enum +{ + _IEEE_ = -1, /* According to IEEE 754/IEEE 854. */ + _SVID_, /* According to System V, release 4. */ + _XOPEN_, /* Nowadays also Unix98. */ + _POSIX_, + _ISOC_ /* Actually this is ISO C99. */ +} _LIB_VERSION_TYPE; + +/* This variable can be changed at run-time to any of the values above to + affect floating point error handling behavior (it may also be necessary + to change the hardware FPU exception settings). */ +extern _LIB_VERSION_TYPE _LIB_VERSION; +#endif + + +#ifdef __USE_SVID +/* In SVID error handling, `matherr' is called with this description + of the exceptional condition. + + We have a problem when using C++ since `exception' is a reserved + name in C++. */ +# ifdef __cplusplus +struct __exception +# else +struct exception +# endif + { + int type; + char *name; + double arg1; + double arg2; + double retval; + }; + +# ifdef __cplusplus +extern int matherr (struct __exception *__exc) throw (); +# else +extern int matherr (struct exception *__exc); +# endif + +# define X_TLOSS 1.41484755040568800000e+16 + +/* Types of exceptions in the `type' field. */ +# define DOMAIN 1 +# define SING 2 +# define OVERFLOW 3 +# define UNDERFLOW 4 +# define TLOSS 5 +# define PLOSS 6 + +/* SVID mode specifies returning this large value instead of infinity. */ +# define HUGE 3.40282347e+38F + +#else /* !SVID */ + +# ifdef __USE_XOPEN +/* X/Open wants another strange constant. */ +# define MAXFLOAT 3.40282347e+38F +# endif + +#endif /* SVID */ + + +/* Some useful constants. */ +#if defined __USE_BSD || defined __USE_XOPEN +# define M_E 2.7182818284590452354 /* e */ +# define M_LOG2E 1.4426950408889634074 /* log_2 e */ +# define M_LOG10E 0.43429448190325182765 /* log_10 e */ +# define M_LN2 0.69314718055994530942 /* log_e 2 */ +# define M_LN10 2.30258509299404568402 /* log_e 10 */ +# define M_PI 3.14159265358979323846 /* pi */ +# define M_PI_2 1.57079632679489661923 /* pi/2 */ +# define M_PI_4 0.78539816339744830962 /* pi/4 */ +# define M_1_PI 0.31830988618379067154 /* 1/pi */ +# define M_2_PI 0.63661977236758134308 /* 2/pi */ +# define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */ +# define M_SQRT2 1.41421356237309504880 /* sqrt(2) */ +# define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ +#endif + +/* The above constants are not adequate for computation using `long double's. + Therefore we provide as an extension constants with similar names as a + GNU extension. Provide enough digits for the 128-bit IEEE quad. */ +#ifdef __USE_GNU +# define M_El 2.7182818284590452353602874713526625L /* e */ +# define M_LOG2El 1.4426950408889634073599246810018921L /* log_2 e */ +# define M_LOG10El 0.4342944819032518276511289189166051L /* log_10 e */ +# define M_LN2l 0.6931471805599453094172321214581766L /* log_e 2 */ +# define M_LN10l 2.3025850929940456840179914546843642L /* log_e 10 */ +# define M_PIl 3.1415926535897932384626433832795029L /* pi */ +# define M_PI_2l 1.5707963267948966192313216916397514L /* pi/2 */ +# define M_PI_4l 0.7853981633974483096156608458198757L /* pi/4 */ +# define M_1_PIl 0.3183098861837906715377675267450287L /* 1/pi */ +# define M_2_PIl 0.6366197723675813430755350534900574L /* 2/pi */ +# define M_2_SQRTPIl 1.1283791670955125738961589031215452L /* 2/sqrt(pi) */ +# define M_SQRT2l 1.4142135623730950488016887242096981L /* sqrt(2) */ +# define M_SQRT1_2l 0.7071067811865475244008443621048490L /* 1/sqrt(2) */ +#endif + + +/* When compiling in strict ISO C compatible mode we must not use the + inline functions since they, among other things, do not set the + `errno' variable correctly. */ +#if defined __STRICT_ANSI__ && !defined __NO_MATH_INLINES +# define __NO_MATH_INLINES 1 +#endif + +#if defined __USE_ISOC99 && __GNUC_PREREQ(2,97) +/* ISO C99 defines some macros to compare number while taking care for + unordered numbers. Many FPUs provide special instructions to support + these operations. Generic support in GCC for these as builtins went + in before 3.0.0, but not all cpus added their patterns. We define + versions that use the builtins here, and <bits/mathinline.h> will + undef/redefine as appropriate for the specific GCC version in use. */ +# define isgreater(x, y) __builtin_isgreater(x, y) +# define isgreaterequal(x, y) __builtin_isgreaterequal(x, y) +# define isless(x, y) __builtin_isless(x, y) +# define islessequal(x, y) __builtin_islessequal(x, y) +# define islessgreater(x, y) __builtin_islessgreater(x, y) +# define isunordered(u, v) __builtin_isunordered(u, v) +#endif + +/* Get machine-dependent inline versions (if there are any). */ +#ifdef __USE_EXTERN_INLINES +# include <bits/mathinline.h> +#endif + +#ifdef __USE_ISOC99 +/* If we've still got undefined comparison macros, provide defaults. */ + +/* Return nonzero value if X is greater than Y. */ +# ifndef isgreater +# define isgreater(x, y) \ + (__extension__ \ + ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \ + !isunordered (__x, __y) && __x > __y; })) +# endif + +/* Return nonzero value if X is greater than or equal to Y. */ +# ifndef isgreaterequal +# define isgreaterequal(x, y) \ + (__extension__ \ + ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \ + !isunordered (__x, __y) && __x >= __y; })) +# endif + +/* Return nonzero value if X is less than Y. */ +# ifndef isless +# define isless(x, y) \ + (__extension__ \ + ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \ + !isunordered (__x, __y) && __x < __y; })) +# endif + +/* Return nonzero value if X is less than or equal to Y. */ +# ifndef islessequal +# define islessequal(x, y) \ + (__extension__ \ + ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \ + !isunordered (__x, __y) && __x <= __y; })) +# endif + +/* Return nonzero value if either X is less than Y or Y is less than X. */ +# ifndef islessgreater +# define islessgreater(x, y) \ + (__extension__ \ + ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \ + !isunordered (__x, __y) && (__x < __y || __y < __x); })) +# endif + +/* Return nonzero value if arguments are unordered. */ +# ifndef isunordered +# define isunordered(u, v) \ + (__extension__ \ + ({ __typeof__(u) __u = (u); __typeof__(v) __v = (v); \ + fpclassify (__u) == FP_NAN || fpclassify (__v) == FP_NAN; })) +# endif + +#endif + +__END_DECLS + + +#endif /* math.h */ |