s_copysignf.c revision 2116
12116Sjkh/* s_copysignf.c -- float version of s_copysign.c. 22116Sjkh * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. 32116Sjkh */ 42116Sjkh 52116Sjkh/* 62116Sjkh * ==================================================== 72116Sjkh * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 82116Sjkh * 92116Sjkh * Developed at SunPro, a Sun Microsystems, Inc. business. 102116Sjkh * Permission to use, copy, modify, and distribute this 112116Sjkh * software is freely granted, provided that this notice 122116Sjkh * is preserved. 132116Sjkh * ==================================================== 142116Sjkh */ 152116Sjkh 162116Sjkh#ifndef lint 172116Sjkhstatic char rcsid[] = "$Id: s_copysignf.c,v 1.2 1994/08/18 23:06:33 jtc Exp $"; 182116Sjkh#endif 192116Sjkh 202116Sjkh/* 212116Sjkh * copysignf(float x, float y) 222116Sjkh * copysignf(x,y) returns a value with the magnitude of x and 232116Sjkh * with the sign bit of y. 242116Sjkh */ 252116Sjkh 262116Sjkh#include "math.h" 272116Sjkh#include "math_private.h" 282116Sjkh 292116Sjkh#ifdef __STDC__ 302116Sjkh float copysignf(float x, float y) 312116Sjkh#else 322116Sjkh float copysignf(x,y) 332116Sjkh float x,y; 342116Sjkh#endif 352116Sjkh{ 362116Sjkh u_int32_t ix,iy; 372116Sjkh GET_FLOAT_WORD(ix,x); 382116Sjkh GET_FLOAT_WORD(iy,y); 392116Sjkh SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000)); 402116Sjkh return x; 412116Sjkh} 42