mingw-w64-crt/math/fdim.c

/**
 * This file has no copyright assigned and is placed in the Public Domain.
 * This file is part of the w64 mingw-runtime package.
 * No warranty is given; refer to the file DISCLAIMER within this package.
 */
#include <math.h>

double
fdim (double x, double y)
{
  return  (isgreater(x, y) ? (x - y) : 0.0);
}