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 #include <sys/cdefs.h>
17 #if defined(LIBM_SCCS) && !defined(lint)
18 __RCSID("$NetBSD: s_copysignf.c,v 1.7 2002/05/26 22:01:54 wiz Exp $");
19 #endif
20
21 /*
22 * copysignf(float x, float y)
23 * copysignf(x,y) returns a value with the magnitude of x and
24 * with the sign bit of y.
25 */
26
27 #include "math.h"
28 #include "math_private.h"
29
30 float
copysignf(float x,float y)31 copysignf(float x, float y)
32 {
33 u_int32_t ix,iy;
34 GET_FLOAT_WORD(ix,x);
35 GET_FLOAT_WORD(iy,y);
36 SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000));
37 return x;
38 }
39