meh

author: root <root@no.no.james.local> 2015-04-23 18:31:49 +0100
committer: root <root@no.no.james.local> 2015-04-23 18:31:49 +0100
commit: 8d24cdce756fc8a4b9ef0b273b841b18b0837f04 (patch)
tree: 6d2d9c9f281a1b2ee5210fb8eeabc2af49566738
download: python-8d24cdce756fc8a4b9ef0b273b841b18b0837f04.tar.gz
python-8d24cdce756fc8a4b9ef0b273b841b18b0837f04.tar.bz2
python-8d24cdce756fc8a4b9ef0b273b841b18b0837f04.zip
5 files changed, 625 insertions, 0 deletions
diff --git a/librns510.c b/librns510.c
new file mode 100644
index 0000000..060c766
--- /dev/null
+++ b/librns510.c
@@ -0,0 +1,96 @@
+#include <stdint.h>
+#include <byteswap.h>
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+#include <inttypes.h>
+
+#define POI_CA 0x80000034       /*0 */
+#define POI_CB 0xF1C71CD4       /*160 */
+//
+#define ZERO (POI_CA)
+#define SCALE (((double) (POI_CB-POI_CA))/160.)
+
+static void
+fromz (int64_t a, double *lat, double *lon)
+{
+  uint64_t b, c;
+  uint32_t d, e, f;
+
+  memcpy (&b, &a, sizeof (a));
+  e = f = 0;
+
+  for (c = 1, d = 1; c; c <<= 1, d <<= 1)
+    {
+      if (b & c)
+        e |= d;
+      c <<= 1;
+      if (b & c)
+        f |= d;
+    }
+
+  *lon = e;
+  *lat = f;
+
+  *lon -= ZERO;
+  *lat -= ZERO;
+
+  *lon /= SCALE;
+  *lat /= SCALE;
+
+}
+
+static void
+toz (double lat, double lon, int64_t * a)
+{
+  uint64_t b, c;
+  uint32_t d, e, f;
+
+  lon *= SCALE;
+  lat *= SCALE;
+  lon += ZERO;
+  lat += ZERO;
+
+  e = (uint32_t) (lon + .5);
+  f = (uint32_t) (lat + .5);
+
+  //printf("%.1f %x\n",lat-ZERO, e,f);
+
+  b = 0;
+  for (c = 1, d = 1; c; c <<= 1, d <<= 1)
+    {
+      if (e & d)
+        b |= c;
+      c <<= 1;
+      if (f & d)
+        b |= c;
+    }
+
+
+  memcpy (a, &b, sizeof (*a));
+}
+
+void
+librns510_encode (const char *slat, const char *slon, char *out)
+{
+  double lat = atof (slat), lon = atof (slon);
+  int64_t z;
+
+  toz (lat, lon, &z);
+
+  sprintf (out, "%" PRId64, z);
+}
+
+void
+librns510_decode (const char *code, char *slat, char *slon)
+{
+  double lat, lon;
+  int64_t z = atoll (code);
+
+  fromz (z, &lat, &lon);
+
+  sprintf (slat, "%.10f", lat);
+  sprintf (slon, "%.10f", lon);
+
+}
diff --git a/librns510.h b/librns510.h
new file mode 100644
index 0000000..377ba61
--- /dev/null
+++ b/librns510.h
@@ -0,0 +1,3 @@
+/* librns510.c */
+void librns510_encode (const char *slat, const char *slon, char *out);
+void librns510_decode (const char *code, char *slat, char *slon);
diff --git a/rns510.html b/rns510.html
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index 0000000..4a4f67e
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@@ -0,0 +1,463 @@
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+<p>Raw output: <a href="rns510.c">rns510.c</a></p>
+<div class="cython"><pre class='cython line score-0'>&#xA0;01: <span class="k">import</span> <span class="nn">cython</span></pre>
+<pre class='cython line score-0'>&#xA0;02: </pre>
+<pre class='cython line score-0'>&#xA0;03: <span class="k">from</span> <span class="nn">libc.stdlib</span> <span class="k">cimport</span> <span class="n">malloc</span></pre>
+<pre class='cython line score-0'>&#xA0;04: <span class="k">from</span> <span class="nn">libc.stdlib</span> <span class="k">cimport</span> <span class="n">free</span></pre>
+<pre class='cython line score-0'>&#xA0;05: </pre>
+<pre class='cython line score-0'>&#xA0;06: <span class="k">cdef</span> <span class="kr">extern</span> <span class="k">from</span> <span class="s">&quot;librns510.h&quot;</span><span class="p">:</span></pre>
+<pre class='cython line score-0'>&#xA0;07: 	<span class="n">void</span> <span class="n">librns510_encode</span><span class="p">(</span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">lat</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">lon</span><span class="p">,</span> <span class="n">char</span> <span class="o">*</span><span class="n">code</span><span class="p">)</span></pre>
+<pre class='cython line score-0'>&#xA0;08: <span class="k">cdef</span> <span class="kr">extern</span> <span class="k">from</span> <span class="s">&quot;librns510.h&quot;</span><span class="p">:</span></pre>
+<pre class='cython line score-0'>&#xA0;09: 	<span class="n">char</span> <span class="o">*</span><span class="n">librns510_decode</span><span class="p">(</span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">code</span><span class="p">,</span> <span class="n">char</span> <span class="o">*</span><span class="n">lat</span><span class="p">,</span> <span class="n">char</span> <span class="o">*</span><span class="n">lon</span><span class="p">)</span></pre>
+<pre class='cython line score-0'>&#xA0;10: </pre>
+<pre class='cython line score-4' onclick='toggleDiv(this)'>+11: <span class="k">cdef</span> <span class="nf">rns510_encode</span><span class="p">(</span><span class="n">char</span> <span class="o">*</span><span class="n">lat</span><span class="p">,</span> <span class="n">char</span> <span class="o">*</span><span class="n">lon</span><span class="p">):</span></pre>
+<pre class='cython code score-4'>static PyObject *__pyx_f_6rns510_rns510_encode(char *__pyx_v_lat, char *__pyx_v_lon) {
+  PyObject *__pyx_v_py_string = 0;
+  char *__pyx_v_out;
+  PyObject *__pyx_r = NULL;
+  <span class='refnanny'>__Pyx_RefNannyDeclarations</span>
+  <span class='refnanny'>__Pyx_RefNannySetupContext</span>("rns510_encode", 0);
+/* … */
+  /* function exit code */
+  __pyx_L1_error:;
+  <span class='pyx_macro_api'>__Pyx_XDECREF</span>(__pyx_t_1);
+  <span class='pyx_c_api'>__Pyx_AddTraceback</span>("rns510.rns510_encode", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = 0;
+  __pyx_L0:;
+  <span class='pyx_macro_api'>__Pyx_XDECREF</span>(__pyx_v_py_string);
+  <span class='refnanny'>__Pyx_XGIVEREF</span>(__pyx_r);
+  <span class='refnanny'>__Pyx_RefNannyFinishContext</span>();
+  return __pyx_r;
+}
+</pre><pre class='cython line score-5' onclick='toggleDiv(this)'>+12: 	<span class="k">assert</span> <span class="n">lat</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">NULL</span></pre>
+<pre class='cython code score-5'>  #ifndef CYTHON_WITHOUT_ASSERTIONS
+  if (unlikely(!Py_OptimizeFlag)) {
+    if (unlikely(!((__pyx_v_lat != NULL) != 0))) {
+      <span class='py_c_api'>PyErr_SetNone</span>(PyExc_AssertionError);
+      <span class='error_goto'>{__pyx_filename = __pyx_f[0]; __pyx_lineno = 12; __pyx_clineno = __LINE__; goto __pyx_L1_error;}</span>
+    }
+  }
+  #endif
+</pre><pre class='cython line score-5' onclick='toggleDiv(this)'>+13: 	<span class="k">assert</span> <span class="n">lon</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">NULL</span></pre>
+<pre class='cython code score-5'>  #ifndef CYTHON_WITHOUT_ASSERTIONS
+  if (unlikely(!Py_OptimizeFlag)) {
+    if (unlikely(!((__pyx_v_lon != NULL) != 0))) {
+      <span class='py_c_api'>PyErr_SetNone</span>(PyExc_AssertionError);
+      <span class='error_goto'>{__pyx_filename = __pyx_f[0]; __pyx_lineno = 13; __pyx_clineno = __LINE__; goto __pyx_L1_error;}</span>
+    }
+  }
+  #endif
+</pre><pre class='cython line score-0'>&#xA0;14: 	<span class="k">cdef</span> <span class="kt">bytes</span> <span class="nf">py_string</span></pre>
+<pre class='cython line score-0'>&#xA0;15: 	<span class="k">cdef</span> <span class="kt">char</span> *<span class="kt">out</span>;</pre>
+<pre class='cython line score-0'>&#xA0;16: </pre>
+<pre class='cython line score-0' onclick='toggleDiv(this)'>+17: 	<span class="n">out</span><span class="o">=&lt;</span><span class="n">char</span> <span class="o">*&gt;</span> <span class="n">malloc</span><span class="p">(</span><span class="mf">128</span><span class="p">)</span></pre>
+<pre class='cython code score-0'>  __pyx_v_out = ((char *)malloc(128));
+</pre><pre class='cython line score-0' onclick='toggleDiv(this)'>+18: 	<span class="n">librns510_encode</span><span class="p">(</span><span class="n">lat</span><span class="p">,</span><span class="n">lon</span><span class="p">,</span><span class="n">out</span><span class="p">)</span></pre>
+<pre class='cython code score-0'>  librns510_encode(__pyx_v_lat, __pyx_v_lon, __pyx_v_out);
+</pre><pre class='cython line score-0' onclick='toggleDiv(this)'>+19: 	<span class="k">try</span><span class="p">:</span></pre>
+<pre class='cython code score-0'>  /*try:*/ {
+</pre><pre class='cython line score-2' onclick='toggleDiv(this)'>+20: 		<span class="n">py_string</span><span class="o">=</span><span class="n">out</span></pre>
+<pre class='cython code score-2'>    __pyx_t_1 = <span class='pyx_c_api'>__Pyx_PyBytes_FromString</span>(__pyx_v_out);<span class='error_goto'> if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 20; __pyx_clineno = __LINE__; goto __pyx_L4_error;}</span>
+    <span class='refnanny'>__Pyx_GOTREF</span>(__pyx_t_1);
+    __pyx_v_py_string = ((PyObject*)__pyx_t_1);
+    __pyx_t_1 = 0;
+  }
+</pre><pre class='cython line score-0'>&#xA0;21: 	<span class="k">finally</span><span class="p">:</span></pre>
+<pre class='cython line score-11' onclick='toggleDiv(this)'>+22: 		<span class="n">free</span><span class="p">(</span><span class="n">out</span><span class="p">)</span></pre>
+<pre class='cython code score-11'>  /*finally:*/ {
+    /*normal exit:*/{
+      free(__pyx_v_out);
+      goto __pyx_L5;
+    }
+    /*exception exit:*/{
+      __pyx_L4_error:;
+      __pyx_t_5 = 0; __pyx_t_6 = 0; __pyx_t_7 = 0; __pyx_t_8 = 0; __pyx_t_9 = 0; __pyx_t_10 = 0;
+      <span class='pyx_macro_api'>__Pyx_XDECREF</span>(__pyx_t_1); __pyx_t_1 = 0;
+      if (PY_MAJOR_VERSION &gt;= 3) <span class='pyx_c_api'>__Pyx_ExceptionSwap</span>(&amp;__pyx_t_8, &amp;__pyx_t_9, &amp;__pyx_t_10);
+      if ((PY_MAJOR_VERSION &lt; 3) || unlikely(<span class='pyx_c_api'>__Pyx_GetException</span>(&amp;__pyx_t_5, &amp;__pyx_t_6, &amp;__pyx_t_7) &lt; 0)) <span class='pyx_c_api'>__Pyx_ErrFetch</span>(&amp;__pyx_t_5, &amp;__pyx_t_6, &amp;__pyx_t_7);
+      <span class='refnanny'>__Pyx_XGOTREF</span>(__pyx_t_5);
+      <span class='refnanny'>__Pyx_XGOTREF</span>(__pyx_t_6);
+      <span class='refnanny'>__Pyx_XGOTREF</span>(__pyx_t_7);
+      <span class='refnanny'>__Pyx_XGOTREF</span>(__pyx_t_8);
+      <span class='refnanny'>__Pyx_XGOTREF</span>(__pyx_t_9);
+      <span class='refnanny'>__Pyx_XGOTREF</span>(__pyx_t_10);
+      __pyx_t_2 = __pyx_lineno; __pyx_t_3 = __pyx_clineno; __pyx_t_4 = __pyx_filename;
+      {
+        free(__pyx_v_out);
+      }
+      if (PY_MAJOR_VERSION &gt;= 3) {
+        <span class='refnanny'>__Pyx_XGIVEREF</span>(__pyx_t_8);
+        <span class='refnanny'>__Pyx_XGIVEREF</span>(__pyx_t_9);
+        <span class='refnanny'>__Pyx_XGIVEREF</span>(__pyx_t_10);
+        <span class='pyx_c_api'>__Pyx_ExceptionReset</span>(__pyx_t_8, __pyx_t_9, __pyx_t_10);
+      }
+      <span class='refnanny'>__Pyx_XGIVEREF</span>(__pyx_t_5);
+      <span class='refnanny'>__Pyx_XGIVEREF</span>(__pyx_t_6);
+      <span class='refnanny'>__Pyx_XGIVEREF</span>(__pyx_t_7);
+      <span class='pyx_c_api'>__Pyx_ErrRestore</span>(__pyx_t_5, __pyx_t_6, __pyx_t_7);
+      __pyx_t_5 = 0; __pyx_t_6 = 0; __pyx_t_7 = 0; __pyx_t_8 = 0; __pyx_t_9 = 0; __pyx_t_10 = 0;
+      __pyx_lineno = __pyx_t_2; __pyx_clineno = __pyx_t_3; __pyx_filename = __pyx_t_4;
+      goto __pyx_L1_error;
+    }
+    __pyx_L5:;
+  }
+</pre><pre class='cython line score-0'>&#xA0;23: </pre>
+<pre class='cython line score-2' onclick='toggleDiv(this)'>+24: 	<span class="k">return</span> <span class="n">py_string</span></pre>
+<pre class='cython code score-2'>  <span class='pyx_macro_api'>__Pyx_XDECREF</span>(__pyx_r);
+  <span class='pyx_macro_api'>__Pyx_INCREF</span>(__pyx_v_py_string);
+  __pyx_r = __pyx_v_py_string;
+  goto __pyx_L0;
+</pre><pre class='cython line score-0'>&#xA0;25: </pre>
+</div></body></html>
diff --git a/rns510.pyx b/rns510.pyx
new file mode 100644
index 0000000..ca0f0ff
--- /dev/null
+++ b/rns510.pyx
@@ -0,0 +1,47 @@
+import cython
+
+from libc.stdlib cimport malloc
+from libc.stdlib cimport free
+
+cdef extern from "librns510.h":
+	void librns510_encode(const char *lat, const char *lon, char *code)
+cdef extern from "librns510.h":
+	char *librns510_decode(const char *code, char *lat, char *lon)
+
+def encode(char *lat, char *lon):
+	assert lat is not NULL
+	assert lon is not NULL
+	cdef bytes py_string
+	cdef char *out
+
+	out=<char *> malloc(128)
+	librns510_encode(lat,lon,out)
+	try:
+		py_string=out
+	finally:
+		free(out)
+
+	return py_string
+
+def decode(char *code):
+	assert code is not NULL
+	cdef bytes py_lat
+	cdef bytes py_lon
+	cdef char *lat
+	cdef char *lon
+
+	lat=<char *> malloc(128)
+	lon=<char *> malloc(128)
+	librns510_decode(code,lat,lon)
+	try:
+		py_lat=lat
+	finally:
+		free(lat)
+
+	try:
+		py_lon=lon
+	finally:
+		free(lon)
+
+	return py_lat,py_lon
+		
diff --git a/setup.py b/setup.py
new file mode 100755
index 0000000..7c75641
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+
+from distutils.core import setup
+from Cython.Build import cythonize
+from distutils.extension import Extension
+
+
+sourcefiles = ['rns510.pyx', 'librns510.c' ]
+
+extensions = [Extension("rns510", sourcefiles)]
+
+setup(
+    name = "rns510",
+    ext_modules = cythonize(extensions)
+)
+
author	root <root@no.no.james.local>	2015-04-23 18:31:49 +0100
committer	root <root@no.no.james.local>	2015-04-23 18:31:49 +0100
commit	8d24cdce756fc8a4b9ef0b273b841b18b0837f04 (patch)
tree	6d2d9c9f281a1b2ee5210fb8eeabc2af49566738
download	python-8d24cdce756fc8a4b9ef0b273b841b18b0837f04.tar.gz python-8d24cdce756fc8a4b9ef0b273b841b18b0837f04.tar.bz2 python-8d24cdce756fc8a4b9ef0b273b841b18b0837f04.zip