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Revert "externals: Update boost to 1.72 and add Boost Context"

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bunnei 2020-02-22 00:33:06 -05:00 • committed by GitHub
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boost/mp11/detail/mp_plus.hpp Normal file
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#ifndef BOOST_MP11_DETAIL_MP_PLUS_HPP_INCLUDED
#define BOOST_MP11_DETAIL_MP_PLUS_HPP_INCLUDED
// Copyright 2015 Peter Dimov.
//
// 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/mp11/detail/config.hpp>
#include <type_traits>
namespace boost
{
namespace mp11
{
// mp_plus
namespace detail
{
#if defined( BOOST_MP11_HAS_FOLD_EXPRESSIONS ) && !BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, < 1920 )
template<class... T> struct mp_plus_impl
{
static const auto _v = (T::value + ... + 0);
using type = std::integral_constant<typename std::remove_const<decltype(_v)>::type, _v>;
};
#else
template<class... T> struct mp_plus_impl;
template<> struct mp_plus_impl<>
{
using type = std::integral_constant<int, 0>;
};
#if BOOST_MP11_WORKAROUND( BOOST_MP11_GCC, < 40800 )
template<class T1, class... T> struct mp_plus_impl<T1, T...>
{
static const decltype(T1::value + mp_plus_impl<T...>::type::value) _v = T1::value + mp_plus_impl<T...>::type::value;
using type = std::integral_constant<typename std::remove_const<decltype(_v)>::type, _v>;
};
template<class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class... T> struct mp_plus_impl<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T...>
{
static const
decltype(T1::value + T2::value + T3::value + T4::value + T5::value + T6::value + T7::value + T8::value + T9::value + T10::value + mp_plus_impl<T...>::type::value)
_v = T1::value + T2::value + T3::value + T4::value + T5::value + T6::value + T7::value + T8::value + T9::value + T10::value + mp_plus_impl<T...>::type::value;
using type = std::integral_constant<typename std::remove_const<decltype(_v)>::type, _v>;
};
#else
template<class T1, class... T> struct mp_plus_impl<T1, T...>
{
static const auto _v = T1::value + mp_plus_impl<T...>::type::value;
using type = std::integral_constant<typename std::remove_const<decltype(_v)>::type, _v>;
};
template<class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class... T> struct mp_plus_impl<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T...>
{
static const auto _v = T1::value + T2::value + T3::value + T4::value + T5::value + T6::value + T7::value + T8::value + T9::value + T10::value + mp_plus_impl<T...>::type::value;
using type = std::integral_constant<typename std::remove_const<decltype(_v)>::type, _v>;
};
#endif
#endif
} // namespace detail
template<class... T> using mp_plus = typename detail::mp_plus_impl<T...>::type;
} // namespace mp11
} // namespace boost
#endif // #ifndef BOOST_MP11_DETAIL_MP_PLUS_HPP_INCLUDED