added prototype c module

Author: PythonCHB

is_close_module.c

@@ -0,0 +1,50 @@
+/* is_close implimentation in C  */
+
+#include "Python.h"
+
+char *is_close_doc = "This will be the docstring, when I write it";
+
+
+
+static PyObject *
+is_close_c(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    double a, b;
+    double rel_tol = 1e-9;
+    double abs_tol = 0.0;
+    long result = 0;
+
+    static char *keywords[] = {"a", "b", "rel_tol", "abs_tol", NULL};
+
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "dd|dd:is_close",
+                                     keywords,
+                                     &a, &b, &rel_tol, &abs_tol
+                                     ))
+        return NULL;
+
+    result = 1;
+
+    return PyBool_FromLong(result);
+}
+
+static PyMethodDef IsCloseMethods[] = {
+    {"is_close", is_close_c, METH_VARARGS | METH_KEYWORDS,
+     "determine if two floating point numbers are close"},
+    {NULL, NULL, 0, NULL}        /* Sentinel */
+};
+
+static struct PyModuleDef is_close_module = {
+   PyModuleDef_HEAD_INIT,
+   "is_close_module",   /* name of module */
+   "docstring for is_close", /* module documentation, may be NULL */
+   -1,           /* size of per-interpreter state of the module,
+                    or -1 if the module keeps state in global variables. */
+   IsCloseMethods
+};
+
+PyMODINIT_FUNC
+PyInit_is_close_module(void)
+{
+    return PyModule_Create(&is_close_module);
+}

setup.py

@@ -0,0 +1,11 @@
+# setup.py for is
+from distutils.core import setup, Extension
+
+is_close_module = Extension('is_close_module',
+                            sources=['is_close_module.c'])
+
+setup(name='is_close',
+      version='1.0',
+      description='test case of is_close C function',
+      ext_modules=[is_close_module]
+      )