mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-17 18:40:14 +00:00
43 lines
1.1 KiB
C
43 lines
1.1 KiB
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.
|
|
* ====================================================
|
|
*/
|
|
|
|
#if defined(LIBM_SCCS) && !defined(lint)
|
|
static char rcsid[] = "$NetBSD: s_copysignf.c,v 1.4 1995/05/10 20:46:59 jtc Exp $";
|
|
#endif
|
|
|
|
/*
|
|
* 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"
|
|
|
|
#ifdef __STDC__
|
|
float __copysignf(float x, float y)
|
|
#else
|
|
float __copysignf(x,y)
|
|
float x,y;
|
|
#endif
|
|
{
|
|
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;
|
|
}
|
|
weak_alias (__copysignf, copysignf)
|