libstdc++
cfenv
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1 // <cfenv> -*- C++ -*-
2 
3 // Copyright (C) 2007-2017 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10 
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15 
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
19 
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
24 
25 /** @file include/cfenv
26  * This is a Standard C++ Library header.
27  */
28 
29 #ifndef _GLIBCXX_CFENV
30 #define _GLIBCXX_CFENV 1
31 
32 #pragma GCC system_header
33 
34 #if __cplusplus < 201103L
35 # include <bits/c++0x_warning.h>
36 #else
37 
38 #include <bits/c++config.h>
39 
40 #if _GLIBCXX_HAVE_FENV_H
41 # include <fenv.h>
42 #endif
43 
44 #ifdef _GLIBCXX_USE_C99_FENV_TR1
45 
46 #undef feclearexcept
47 #undef fegetexceptflag
48 #undef feraiseexcept
49 #undef fesetexceptflag
50 #undef fetestexcept
51 #undef fegetround
52 #undef fesetround
53 #undef fegetenv
54 #undef feholdexcept
55 #undef fesetenv
56 #undef feupdateenv
57 
58 namespace std
59 {
60  // types
61  using ::fenv_t;
62  using ::fexcept_t;
63 
64  // functions
65  using ::feclearexcept;
66  using ::fegetexceptflag;
67  using ::feraiseexcept;
68  using ::fesetexceptflag;
69  using ::fetestexcept;
70 
71  using ::fegetround;
72  using ::fesetround;
73 
74  using ::fegetenv;
75  using ::feholdexcept;
76  using ::fesetenv;
77  using ::feupdateenv;
78 } // namespace std
79 
80 #endif // _GLIBCXX_USE_C99_FENV_TR1
81 
82 #endif // C++11
83 
84 #endif // _GLIBCXX_CFENV
ISO C++ entities toplevel namespace is std.