s_copysignf.c revision 8870 
1/* s_copysignf.c -- float version of s_copysign.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 */
4
5/*
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8 *
9 * Developed at SunPro, a Sun Microsystems, Inc. business.
10 * Permission to use, copy, modify, and distribute this
11 * software is freely granted, provided that this notice
12 * is preserved.
13 * ====================================================
14 */
15
16#ifndef lint
17static char rcsid[] = "$Id: s_copysignf.c,v 1.1.1.1 1994/08/19 09:39:57 jkh Exp $";
18#endif
19
20/*
21 * copysignf(float x, float y)
22 * copysignf(x,y) returns a value with the magnitude of x and
23 * with the sign bit of y.
24 */
25
26#include "math.h"
27#include "math_private.h"
28
29#ifdef __STDC__
30	float copysignf(float x, float y)
31#else
32	float copysignf(x,y)
33	float x,y;
34#endif
35{
36	u_int32_t ix,iy;
37	GET_FLOAT_WORD(ix,x);
38	GET_FLOAT_WORD(iy,y);
39	SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000));
40        return x;
41}
42