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/* @(#)s_copysign.c 5.1 93/09/24 */
/*
* ====================================================
* 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_copysign.c,v 1.8 1995/05/10 20:46:57 jtc Exp $";
#endif
/*
* copysign(double x, double y)
* copysign(x,y) returns a value with the magnitude of x and
* with the sign bit of y.
*/
#include <math.h>
#include <math_private.h>
double
__copysign (double x, double y)
{
uint32_t hx, hy;
GET_HIGH_WORD (hx, x);
GET_HIGH_WORD (hy, y);
SET_HIGH_WORD (x, (hx & 0x7fffffff) | (hy & 0x80000000));
return x;
}
weak_alias (__copysign, copysign)
#ifdef NO_LONG_DOUBLE
strong_alias (__copysign, __copysignl)
weak_alias (__copysign, copysignl)
#endif
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