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/* 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"
 
#ifdef __STDC__
	float fdimf(float x, float y)
#else
	float fdimf(x,y)
	float x;
	float y;
#endif
{
  int c = __fpclassifyf(x);
  if (c == FP_NAN)  return(x);
  if (__fpclassifyf(y) == FP_NAN)  return(y);
  if (c == FP_INFINITE)
    return HUGE_VALF;
 
  return x > y ? x - y : 0.0;
}
 
#ifdef _DOUBLE_IS_32BITS
 
#ifdef __STDC__
	double fdim(double x, double y)
#else
	double fdim(x,y)
	double x;
	double y;
#endif
{
  return (double) fdimf((float) x, (float) y);
}
 
#endif /* defined(_DOUBLE_IS_32BITS) */