/*
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*
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* Copyright (c) 2020 Andrey Semashev
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*/
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/*!
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* \file atomic/detail/type_traits/alignment_of.hpp
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*
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* This header defines \c alignment_of type trait
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*/
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#ifndef BOOST_ATOMIC_DETAIL_TYPE_TRAITS_ALIGNMENT_OF_HPP_INCLUDED_
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#define BOOST_ATOMIC_DETAIL_TYPE_TRAITS_ALIGNMENT_OF_HPP_INCLUDED_
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#include <boost/atomic/detail/config.hpp>
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#if defined(BOOST_ATOMIC_DETAIL_NO_CXX11_BASIC_HDR_TYPE_TRAITS) ||\
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(defined(BOOST_GCC) && (BOOST_GCC+0) < 80100) ||\
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(defined(BOOST_CLANG) && !defined(__apple_build_version__) && (__clang_major__+0) < 8) ||\
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(defined(BOOST_CLANG) && defined(__apple_build_version__) && (__clang_major__+0) < 9)
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// For some compilers std::alignment_of gives the wrong result for 64-bit types on 32-bit targets
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#define BOOST_ATOMIC_DETAIL_NO_CXX11_STD_ALIGNMENT_OF
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#endif
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#if !defined(BOOST_ATOMIC_DETAIL_NO_CXX11_STD_ALIGNMENT_OF)
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#include <type_traits>
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#else
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#include <boost/type_traits/alignment_of.hpp>
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#endif
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#ifdef BOOST_HAS_PRAGMA_ONCE
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#pragma once
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#endif
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namespace boost {
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namespace atomics {
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namespace detail {
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#if !defined(BOOST_ATOMIC_DETAIL_NO_CXX11_STD_ALIGNMENT_OF)
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using std::alignment_of;
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#else
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using boost::alignment_of;
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#endif
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} // namespace detail
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} // namespace atomics
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} // namespace boost
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#endif // BOOST_ATOMIC_DETAIL_TYPE_TRAITS_ALIGNMENT_OF_HPP_INCLUDED_
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