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v0.5.1
v0.5.1
Revision 724ef20e24b8c5b8bce394f70c3eddf3540ebb42 authored by Anthony Baxter on 25 January 2005, 13:08:15 UTC, committed by Anthony Baxter on 25 January 2005, 13:08:15 UTC
1 parent c859084
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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