Subversion Repositories openrisc_2011-10-31

/* 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.

 */

/*

FUNCTION

<<fmax>>, <<fmaxf>>--maximum

INDEX

        fmax

INDEX

        fmaxf

ANSI_SYNOPSIS

        #include <math.h>

        double fmax(double <[x]>, double <[y]>);

        float fmaxf(float <[x]>, float <[y]>);

DESCRIPTION

The <<fmax>> functions determine the maximum numeric value of their arguments.

NaN arguments are treated as missing data:  if one argument is a NaN and the

other numeric, then the <<fmax>> functions choose the numeric value.

RETURNS

The <<fmax>> functions return the maximum numeric value of their arguments.

PORTABILITY

ANSI C, POSIX.

*/

#include "fdlibm.h"

#ifndef _DOUBLE_IS_32BITS

#ifdef __STDC__

        double fmax(double x, double y)

#else

        double fmax(x,y)

        double x;

        double y;

#endif

{

  if (__fpclassifyd(x) == FP_NAN)

    return y;

  if (__fpclassifyd(y) == FP_NAN)

    return x;

  return x > y ? x : y;

}

#endif /* _DOUBLE_IS_32BITS */