/* derived from /netlib/fdlibm */ /* @(#)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" 	double copysign(double x, double y){	__HI(x) = (__HI(x)&0x7fffffff)|(__HI(y)&0x80000000);        return x;}