1 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library. If not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #define NO_MATH_REDIRECT
19 #include <math.h>
20 #include <math_ldbl_opt.h>
21 #include <libm-alias-double.h>
22
23 double
__copysign(double x,double y)24 __copysign (double x, double y)
25 {
26 return __builtin_copysign (x, y);
27 }
28
29 libm_alias_double (__copysign, copysign)
30 #if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0)
31 compat_symbol (libc, __copysign, copysignl, GLIBC_2_0);
32 #endif
33