// (C) Copyright John Maddock 2010.
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (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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// See http://www.boost.org/libs/type_traits for most recent version including documentation.
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#ifndef BOOST_TT_CONDITIONAL_HPP_INCLUDED
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#define BOOST_TT_CONDITIONAL_HPP_INCLUDED
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#include <boost/config.hpp>
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namespace boost {
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template <bool b, class T, class U> struct conditional { typedef T type; };
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template <class T, class U> struct conditional<false, T, U> { typedef U type; };
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#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
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template <bool b, class T, class U> using conditional_t = typename conditional<b, T, U>::type;
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#endif
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} // namespace boost
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#endif // BOOST_TT_CONDITIONAL_HPP_INCLUDED
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