blob: 4618b5408c681e387be80f93488e9872e063240e [file] [log] [blame]
Jeff Thompsonef2d5a42013-08-22 19:09:24 -07001/*=============================================================================
2 Copyright (c) 2010 Bryce Lelbach
3
4 Distributed under the Boost Software License, Version 1.0. (See accompanying
5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6=============================================================================*/
7
8#include <ndnboost/config.hpp>
9
10#if defined(BOOST_NO_FENV_H)
11 #error This platform does not have a floating point environment
12#endif
13
14#if !defined(BOOST_DETAIL_FENV_HPP)
15#define BOOST_DETAIL_FENV_HPP
16
17/* If we're using clang + glibc, we have to get hacky.
18 * See http://llvm.org/bugs/show_bug.cgi?id=6907 */
19#if defined(__clang__) && (__clang_major__ < 3) && \
20 defined(__GNU_LIBRARY__) && /* up to version 5 */ \
21 defined(__GLIBC__) && /* version 6 + */ \
22 !defined(_FENV_H)
23 #define _FENV_H
24
25 #include <features.h>
26 #include <bits/fenv.h>
27
28 extern "C" {
29 extern int fegetexceptflag (fexcept_t*, int) __THROW;
30 extern int fesetexceptflag (__const fexcept_t*, int) __THROW;
31 extern int feclearexcept (int) __THROW;
32 extern int feraiseexcept (int) __THROW;
33 extern int fetestexcept (int) __THROW;
34 extern int fegetround (void) __THROW;
35 extern int fesetround (int) __THROW;
36 extern int fegetenv (fenv_t*) __THROW;
37 extern int fesetenv (__const fenv_t*) __THROW;
38 extern int feupdateenv (__const fenv_t*) __THROW;
39 extern int feholdexcept (fenv_t*) __THROW;
40
41 #ifdef __USE_GNU
42 extern int feenableexcept (int) __THROW;
43 extern int fedisableexcept (int) __THROW;
44 extern int fegetexcept (void) __THROW;
45 #endif
46 }
47
48 namespace std { namespace tr1 {
49 using ::fenv_t;
50 using ::fexcept_t;
51 using ::fegetexceptflag;
52 using ::fesetexceptflag;
53 using ::feclearexcept;
54 using ::feraiseexcept;
55 using ::fetestexcept;
56 using ::fegetround;
57 using ::fesetround;
58 using ::fegetenv;
59 using ::fesetenv;
60 using ::feupdateenv;
61 using ::feholdexcept;
62 } }
63
64#else /* if we're not using GNU's C stdlib, fenv.h should work with clang */
65 #if defined(__SUNPRO_CC) /* lol suncc */
66 #include <stdio.h>
67 #endif
68
69 #include <fenv.h>
70
71#endif
72
73#endif /* BOOST_DETAIL_FENV_HPP */
74