/*
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Copyright 2020 Glen Joseph Fernandes
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(glenjofe@gmail.com)
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Distributed under the Boost Software License,
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Version 1.0. (See accompanying file LICENSE_1_0.txt
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or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_TT_CONJUNCTION_HPP_INCLUDED
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#define BOOST_TT_CONJUNCTION_HPP_INCLUDED
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#include <boost/type_traits/conditional.hpp>
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#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
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#include <boost/type_traits/integral_constant.hpp>
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#endif
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namespace boost {
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#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
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template<class...>
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struct conjunction
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: true_type { };
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template<class T>
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struct conjunction<T>
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: T { };
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template<class T, class... U>
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struct conjunction<T, U...>
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: conditional<bool(T::value), conjunction<U...>, T>::type { };
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#else
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template<class T, class U>
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struct conjunction
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: conditional<bool(T::value), U, T>::type { };
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#endif
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} /* boost */
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#endif
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