/* @(#)s_copysign.c 1.2 95/01/04 */
/*
 * ====================================================
 * 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.
 * ====================================================
 */

/*
 * 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
{
#ifdef DOS
	__HI(x) = (__HI(x)&0x7fffffffL)|(__HI(y)&0x80000000L);
#else
	__HI(x) = (__HI(x)&0x7fffffff)|(__HI(y)&0x80000000);
#endif
		  return x;
}
