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// (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, Howard
// Hinnant & John Maddock 2000.
// Use, modification and distribution are subject to 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).
//
// See http://www.boost.org/libs/type_traits for most recent version including documentation.
#ifndef BOOST_TT_IS_UNION_HPP_INCLUDED
#define BOOST_TT_IS_UNION_HPP_INCLUDED
#include <boost/type_traits/intrinsics.hpp>
#include <boost/type_traits/integral_constant.hpp>
namespace boost {
#ifdef BOOST_IS_UNION
template <class T> struct is_union : public integral_constant<bool, BOOST_IS_UNION(T)> {};
#else
template <class T> struct is_union : public integral_constant<bool, false> {};
#endif
template <class T> struct is_union<T const> : public is_union<T>{};
template <class T> struct is_union<T volatile const> : public is_union<T>{};
template <class T> struct is_union<T volatile> : public is_union<T>{};
} // namespace boost
#endif // BOOST_TT_IS_UNION_HPP_INCLUDED
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