view Python/fmod.c @ 23211:e16dbf875303 legacy-trunk

Moving pymalloc along. + Redirect PyMem_{Del, DEL} to the object allocator's free() when pymalloc is enabled. Needed so old extensions can continue to mix PyObject_New with PyMem_DEL. + This implies that pgen needs to be able to see the PyObject_XYZ declarations too. pgenheaders.h now includes Python.h. An implication is that I expect obmalloc.o needs to get linked into pgen on non-Windows boxes. + When PYMALLOC_DEBUG is defined, *all* Py memory API functions now funnel through the debug allocator wrapper around pymalloc. This is the default in a debug build. + That caused compile.c to fail: it indirectly mixed PyMem_Malloc with raw platform free() in one place. This is verbotten.
author Tim Peters <tim.peters@gmail.com>
date Mon, 22 Apr 2002 02:33:27 +0000
parents 2dea40e40d9d
children
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/* Portable fmod(x, y) implementation for systems that don't have it */

#include "pyconfig.h"

#include "pyport.h"
#include <errno.h>

double
fmod(double x, double y)
{
	double i, f;
	
	if (y == 0.0) {
		errno = EDOM;
		return 0.0;
	}
	
	/* return f such that x = i*y + f for some integer i
	   such that |f| < |y| and f has the same sign as x */
	
	i = floor(x/y);
	f = x - i*y;
	if ((x < 0.0) != (y < 0.0))
		f = f-y;
	return f;
}