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/* s_copysignl.c -- long double version of s_copysign.c.
*/
/*
* ====================================================
* 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: $";
#endif
/*
* copysignl(long double x, long double y)
* copysignl(x,y) returns a value with the magnitude of x and
* with the sign bit of y.
*/
#define NO_MATH_REDIRECT
#include <math.h>
#include <math_private.h>
#include <libm-alias-ldouble.h>
#include <math-use-builtins.h>
_Float128
__copysignl (_Float128 x, _Float128 y)
{
#if USE_COPYSIGNL_BUILTIN
return __builtin_copysignl (x, y);
#else
/* Use generic implementation. */
uint64_t hx, hy;
GET_LDOUBLE_MSW64 (hx, x);
GET_LDOUBLE_MSW64 (hy, y);
SET_LDOUBLE_MSW64 (x, (hx & 0x7fffffffffffffffULL)
| (hy & 0x8000000000000000ULL));
return x;
#endif /* ! USE_COPYSIGNL_BUILTIN */
}
libm_alias_ldouble (__copysign, copysign)
|
