/* @(#)s_copysign.c 1.3 95/01/18 */

/*

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

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

 *

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

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

 * software is freely granted, provided that this notice 

 * is preserved.

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

 */

/*

 * copysign(double x, double y)

 * copysign(x,y) returns a value with the magnitude of x and

 * with the sign bit of y.

 */

#include "fdlibm.h"

#ifdef __STDC__

	double copysign(double x, double y)

#else

	double copysign(x,y)

	double x,y;

#endif

{

	__HI(x) = (__HI(x)&0x7fffffff)|(__HI(y)&0x80000000);

        return x;

}