1/* Wrapper for x86 bits/fenv.h for use when building glibc.
2 Copyright (C) 1997-2017 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#ifndef _BITS_FENV_H
20#include_next <bits/fenv.h>
21
22# ifndef _ISOMAC
23
24/* Ensure __feraiseexcept calls in glibc are optimized the same as
25 feraiseexcept calls. */
26
27#ifdef __USE_EXTERN_INLINES
28__BEGIN_DECLS
29
30extern int __REDIRECT_NTH (____feraiseexcept_renamed, (int), __feraiseexcept);
31__extern_inline int
32__NTH (__feraiseexcept (int __excepts))
33{
34 if (__builtin_constant_p (__excepts)
35 && (__excepts & ~(FE_INVALID | FE_DIVBYZERO)) == 0)
36 {
37 __feraiseexcept_invalid_divbyzero (__excepts);
38 return 0;
39 }
40
41 return ____feraiseexcept_renamed (__excepts);
42}
43
44__END_DECLS
45#endif
46
47# endif /* _ISOMAC */
48#endif /* bits/fenv.h */
49