1/* s_copysignl.c -- long double version of s_copysign.c.
2 */
3
4/*
5 * ====================================================
6 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
7 *
8 * Developed at SunPro, a Sun Microsystems, Inc. business.
9 * Permission to use, copy, modify, and distribute this
10 * software is freely granted, provided that this notice
11 * is preserved.
12 * ====================================================
13 */
14
15#if defined(LIBM_SCCS) && !defined(lint)
16static char rcsid[] = "$NetBSD: $";
17#endif
18
19/*
20 * copysignl(long double x, long double y)
21 * copysignl(x,y) returns a value with the magnitude of x and
22 * with the sign bit of y.
23 */
24
25#define NO_MATH_REDIRECT
26#include <math.h>
27#include <math_ldbl_opt.h>
28
29long double __copysignl(long double x, long double y)
30{
31 if (signbit (x) != signbit (y))
32 x = -x;
33 return x;
34}
35
36#if IS_IN (libm)
37long_double_symbol (libm, __copysignl, copysignl);
38#else
39long_double_symbol (libc, __copysignl, copysignl);
40#endif
41

source code of glibc/sysdeps/ieee754/ldbl-128ibm/s_copysignl.c