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 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