mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-04 21:42:39 +00:00
102 lines
3.1 KiB
C++
102 lines
3.1 KiB
C++
|
/*=============================================================================
|
||
|
|
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__) && (__clang_major__ < 3) && \
|
||
|
|
defined(__GNU_LIBRARY__) && /* up to version 5 */ \
|
||
|
|
defined(__GLIBC__) && /* version 6 + */ \
|
||
|
|
!defined(_FENV_H)
|
||
|
|
#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;
|
||
|
|
} }
|
||
|
|
|
||
|
|
#elif defined(__MINGW32__) && defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 408
|
||
|
|
|
||
|
|
// MinGW (32-bit) has a bug in mingw32/bits/c++config.h, it does not define _GLIBCXX_HAVE_FENV_H,
|
||
|
|
// which prevents the C fenv.h header contents to be included in the C++ wrapper header fenv.h. This is at least
|
||
|
|
// the case with gcc 4.8.1 packages tested so far, up to 4.8.1-4. Note that there is no issue with
|
||
|
|
// MinGW-w64.
|
||
|
|
// To work around the bug we avoid including the C++ wrapper header and include the C header directly
|
||
|
|
// and import all relevant symbols into std:: ourselves.
|
||
|
|
|
||
|
|
#include <../include/fenv.h>
|
||
|
|
|
||
|
|
namespace std {
|
||
|
|
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 */
|