Staging
v0.5.1
v0.5.1
Revision 906e26e897b4b2e4b938c65fc4cf9d3b13fa069d authored by Martin v. Löwis on 14 January 2010, 17:41:58 UTC, committed by Martin v. Löwis on 14 January 2010, 17:41:58 UTC
1 parent a822768
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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