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 __FBSDID("$FreeBSD: src/lib/msun/src/s_copysignf.c,v 1.10 2008/02/22 02:30:35 das Exp $"); 18 19 /* 20 * copysignf(float x, float y) 21 * copysignf(x,y) returns a value with the magnitude of x and 22 * with the sign bit of y. 23 */ 24 25 #include "math.h" 26 #include "math_private.h" 27 28 float 29 copysignf(float x, float y) 30 { 31 u_int32_t ix,iy; 32 GET_FLOAT_WORD(ix,x); 33 GET_FLOAT_WORD(iy,y); 34 SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000)); 35 return x; 36 } 37