newlib-cygwin/newlib/libm/common/s_fdim.c

27 lines
510 B
C

/* Copyright (C) 2002 by Red Hat, Incorporated. All rights reserved.
*
* Permission to use, copy, modify, and distribute this software
* is freely granted, provided that this notice is preserved.
*/
#include "fdlibm.h"
#ifndef _DOUBLE_IS_32BITS
#ifdef __STDC__
double fdim(double x, double y)
#else
double fdim(x,y)
double x;
double y;
#endif
{
int c = __fpclassifyd(x);
if (c == FP_NAN || c == FP_INFINITE)
return HUGE_VAL;
return x > y ? x - y : 0.0;
}
#endif /* _DOUBLE_IS_32BITS */