s_copysignf.c revision 8870
185378Sjlemon/* s_copysignf.c -- float version of s_copysign.c. 285378Sjlemon * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. 385378Sjlemon */ 485378Sjlemon 5198236Sru/* 685378Sjlemon * ==================================================== 785378Sjlemon * 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[] = "$Id: s_copysignf.c,v 1.1.1.1 1994/08/19 09:39:57 jkh Exp $"; 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#ifdef __STDC__ 30 float copysignf(float x, float y) 31#else 32 float copysignf(x,y) 33 float x,y; 34#endif 35{ 36 u_int32_t ix,iy; 37 GET_FLOAT_WORD(ix,x); 38 GET_FLOAT_WORD(iy,y); 39 SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000)); 40 return x; 41} 42