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/* @(#)s_copysign.c 5.1 93/09/24 */

/*

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

 * 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.

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

 */

#if defined(LIBM_SCCS) && !defined(lint)

static char rcsid[] = "$NetBSD: s_copysign.c,v 1.8 1995/05/10 20:46:57 jtc Exp $";

#endif

/*

 * copysign(double x, double y)

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

 * with the sign bit of y.

 */

#include "math.h"

#include "math_private.h"

#ifdef __STDC__

        double copysign(double x, double y)

#else

        double copysign(x,y)

        double x,y;

#endif

{

        u_int32_t hx,hy;

        GET_HIGH_WORD(hx,x);

        GET_HIGH_WORD(hy,y);

        SET_HIGH_WORD(x,(hx&0x7fffffff)|(hy&0x80000000));

        return x;

}