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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | /*
* Copyright Andrey Semashev 2007 - 2013.
* 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)
*/
/*!
* \file alignas.hpp
* \author Andrey Semashev
* \date 06.07.2012
*
* \brief This header is the Boost.Log library implementation, see the library documentation
* at http://www.boost.org/libs/log/doc/log.html.
*/
#ifndef BOOST_LOG_DETAIL_ALIGNAS_HPP_INCLUDED_
#define BOOST_LOG_DETAIL_ALIGNAS_HPP_INCLUDED_
#include <boost/log/detail/config.hpp>
#ifdef BOOST_LOG_HAS_PRAGMA_ONCE
#pragma once
#endif
// The macro allows to specify type or variable alignment
#if defined(_MSC_VER)
#define BOOST_LOG_ALIGNAS(x) __declspec(align(x))
#elif defined(BOOST_CLANG)
#if __has_feature(cxx_alignas) || __has_extension(cxx_alignas)
#define BOOST_LOG_ALIGNAS(x) alignas(x)
#endif
#elif defined(__GNUC__)
#if defined(__GXX_EXPERIMENTAL_CXX0X__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))
#define BOOST_LOG_ALIGNAS(x) alignas(x)
#else
#define BOOST_LOG_ALIGNAS(x) __attribute__((__aligned__(x)))
#endif
#endif
#if !defined(BOOST_LOG_ALIGNAS)
#define BOOST_LOG_NO_ALIGNAS 1
#define BOOST_LOG_ALIGNAS(x)
#endif
#endif // BOOST_LOG_DETAIL_ALIGNAS_HPP_INCLUDED_
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