ref: d0c5e1bb15cdd6d57bef2c1086b87c48d9c0adcd
dir: /posix/s_copysignf.c/
/* s_copysignf.c -- float version of s_copysign.c.
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
*/
/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
/*
* copysignf(float x, float y)
* copysignf(x,y) returns a value with the magnitude of x and
* with the sign bit of y.
*/
#include "math.h"
#include "math_private.h"
float
copysignf(float x, float y)
{
u_int32_t ix,iy;
GET_FLOAT_WORD(ix,x);
GET_FLOAT_WORD(iy,y);
SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000));
return x;
}