Revision 2d1a50ca13309d10517d3eac59b90fdfa156b8a2 authored by cvs2svn on 15 October 2004, 08:07:21 UTC, committed by cvs2svn on 15 October 2004, 08:07:21 UTC
1 parent 6a587c1
fmod.c
/* 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;
}
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