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      1 /* s_copysignf.c -- float version of s_copysign.c.
      2  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian (at) 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
     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