1 /* @(#)s_copysign.c 5.1 93/09/24 */
2 /* $FreeBSD: head/lib/msun/src/s_copysign.c 176451 2008-02-22 02:30:36Z das $ */
4 * ====================================================
5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
7 * Developed at SunPro, a Sun Microsystems, Inc. business.
8 * Permission to use, copy, modify, and distribute this
9 * software is freely granted, provided that this notice
11 * ====================================================
15 * copysign(double x, double y)
16 * copysign(x,y) returns a value with the magnitude of x and
17 * with the sign bit of y.
21 #include "math_private.h"
24 copysign(double x, double y)
29 SET_HIGH_WORD(x,(hx&0x7fffffff)|(hy&0x80000000));