s_copysignf.c revision 97409
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[] = "$FreeBSD: head/lib/msun/src/s_copysignf.c 97409 2002-05-28 17:51:46Z alfred $"; 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 float 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