Subversion Repositories openrisc_2011-10-31

/*

 * ====================================================

 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.

 *

 * Developed at SunPro, a Sun Microsystems, Inc. business.

 * Permission to use, copy, modify, and distribute this

 * software is freely granted, provided that this notice

 * is preserved.

 * ====================================================

 */

/*

FUNCTION

<<nearbyint>>, <<nearbyintf>>--round to integer

INDEX

        nearbyint

INDEX

        nearbyintf

ANSI_SYNOPSIS

        #include <math.h>

        double nearbyint(double <[x]>);

        float nearbyintf(float <[x]>);

DESCRIPTION

The <<nearbyint>> functions round their argument to an integer value in

floating-point format, using the current rounding direction and

(supposedly) without raising the "inexact" floating-point exception.

See the <<rint>> functions for the same function with the "inexact"

floating-point exception being raised when appropriate.

BUGS

Newlib does not support the floating-point exception model, so that

the floating-point exception control is not present and thereby what may

be seen will be compiler and hardware dependent in this regard.

The Newlib <<nearbyint>> functions are identical to the <<rint>>

functions with respect to the floating-point exception behavior, and

will cause the "inexact" exception to be raised for most targets.

RETURNS

<[x]> rounded to an integral value, using the current rounding direction.

PORTABILITY

ANSI C, POSIX

SEEALSO

<<rint>>, <<round>>

*/

#include <math.h>

#include "fdlibm.h"

#ifndef _DOUBLE_IS_32BITS

#ifdef __STDC__

        double nearbyint(double x)

#else

        double nearbyint(x)

        double x;

#endif

{

  return rint(x);

}

#endif /* _DOUBLE_IS_32BITS */