1/* Wrapper for x86 bits/fenv.h for use when building glibc.
2 Copyright (C) 1997-2019 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
21#if defined _LIBC && defined __USE_EXTERN_INLINES
22# if defined SHARED && !defined NO_HIDDEN && IS_IN (libm)
23extern int __REDIRECT_NTH (__feraiseexcept_renamed, (int), __GI_feraiseexcept);
24# else
25extern int __REDIRECT_NTH (__feraiseexcept_renamed, (int), feraiseexcept);
26# endif
27#endif
28
29#include_next <bits/fenv.h>
30
31# ifndef _ISOMAC
32
33/* Ensure __feraiseexcept calls in glibc are optimized the same as
34 feraiseexcept calls. */
35
36#ifdef __USE_EXTERN_INLINES
37__BEGIN_DECLS
38
39extern int __REDIRECT_NTH (____feraiseexcept_renamed, (int), __feraiseexcept);
40__extern_inline int
41__NTH (__feraiseexcept (int __excepts))
42{
43 if (__builtin_constant_p (__excepts)
44 && (__excepts & ~(FE_INVALID | FE_DIVBYZERO)) == 0)
45 {
46 __feraiseexcept_invalid_divbyzero (__excepts);
47 return 0;
48 }
49
50 return ____feraiseexcept_renamed (__excepts);
51}
52
53__END_DECLS
54#endif
55
56# endif /* _ISOMAC */
57#endif /* bits/fenv.h */
58