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/*
Copyright 2020 Glen Joseph Fernandes
(glenjofe@gmail.com)
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)
*/
#ifndef BOOST_TT_CONJUNCTION_HPP_INCLUDED
#define BOOST_TT_CONJUNCTION_HPP_INCLUDED
#include <boost/type_traits/conditional.hpp>
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
#include <boost/type_traits/integral_constant.hpp>
#endif
namespace boost {
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
template<class...>
struct conjunction
: true_type { };
template<class T>
struct conjunction<T>
: T { };
template<class T, class... U>
struct conjunction<T, U...>
: conditional<bool(T::value), conjunction<U...>, T>::type { };
#else
template<class T, class U>
struct conjunction
: conditional<bool(T::value), U, T>::type { };
#endif
} /* boost */
#endif