/*============================================================================= | |
Copyright (c) 2010 Bryce Lelbach | |
Distributed under the Boost Software License, Version 1.0. (See accompanying | |
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
=============================================================================*/ | |
#include <boost/config.hpp> | |
#if defined(BOOST_NO_FENV_H) | |
#error This platform does not have a floating point environment | |
#endif | |
#if !defined(BOOST_DETAIL_FENV_HPP) | |
#define BOOST_DETAIL_FENV_HPP | |
/* If we're using clang + glibc, we have to get hacky. | |
* See http://llvm.org/bugs/show_bug.cgi?id=6907 */ | |
#if defined(__clang__) && \ | |
defined(__GNU_LIBRARY__) && /* up to version 5 */ \ | |
defined(__GLIBC__) /* version 6 + */ | |
#define _FENV_H | |
#include <features.h> | |
#include <bits/fenv.h> | |
extern "C" { | |
extern int fegetexceptflag (fexcept_t*, int) __THROW; | |
extern int fesetexceptflag (__const fexcept_t*, int) __THROW; | |
extern int feclearexcept (int) __THROW; | |
extern int feraiseexcept (int) __THROW; | |
extern int fetestexcept (int) __THROW; | |
extern int fegetround (void) __THROW; | |
extern int fesetround (int) __THROW; | |
extern int fegetenv (fenv_t*) __THROW; | |
extern int fesetenv (__const fenv_t*) __THROW; | |
extern int feupdateenv (__const fenv_t*) __THROW; | |
extern int feholdexcept (fenv_t*) __THROW; | |
#ifdef __USE_GNU | |
extern int feenableexcept (int) __THROW; | |
extern int fedisableexcept (int) __THROW; | |
extern int fegetexcept (void) __THROW; | |
#endif | |
} | |
namespace std { namespace tr1 { | |
using ::fenv_t; | |
using ::fexcept_t; | |
using ::fegetexceptflag; | |
using ::fesetexceptflag; | |
using ::feclearexcept; | |
using ::feraiseexcept; | |
using ::fetestexcept; | |
using ::fegetround; | |
using ::fesetround; | |
using ::fegetenv; | |
using ::fesetenv; | |
using ::feupdateenv; | |
using ::feholdexcept; | |
} } | |
#else /* if we're not using GNU's C stdlib, fenv.h should work with clang */ | |
#if defined(__SUNPRO_CC) /* lol suncc */ | |
#include <stdio.h> | |
#endif | |
#include <fenv.h> | |
#endif | |
#endif /* BOOST_DETAIL_FENV_HPP */ | |