54 lines
1.1 KiB
C++
54 lines
1.1 KiB
C++
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/*
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Copyright 2014-2016 Glen Joseph Fernandes
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(glenjofe@gmail.com)
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Distributed under the Boost Software License, Version 1.0.
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(http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_ALIGN_DETAIL_INTEGRAL_CONSTANT_HPP
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#define BOOST_ALIGN_DETAIL_INTEGRAL_CONSTANT_HPP
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#include <boost/config.hpp>
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#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
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#include <type_traits>
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#endif
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namespace boost {
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namespace alignment {
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namespace detail {
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#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
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using std::integral_constant;
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using std::true_type;
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using std::false_type;
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#else
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template<class T, T Value>
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struct integral_constant {
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typedef T value_type;
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typedef integral_constant type;
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BOOST_CONSTEXPR operator value_type() const BOOST_NOEXCEPT {
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return Value;
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}
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BOOST_CONSTEXPR value_type operator()() const BOOST_NOEXCEPT {
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return Value;
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}
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BOOST_STATIC_CONSTEXPR T value = Value;
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};
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template<class T, T Value>
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BOOST_CONSTEXPR_OR_CONST T integral_constant<T, Value>::value;
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typedef integral_constant<bool, true> true_type;
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typedef integral_constant<bool, false> false_type;
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#endif
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} /* detail */
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} /* alignment */
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} /* boost */
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#endif
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