32 lines
1.1 KiB
Plaintext
32 lines
1.1 KiB
Plaintext
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// (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, Howard
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// Hinnant & John Maddock 2000.
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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_IS_UNION_HPP_INCLUDED
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#define BOOST_TT_IS_UNION_HPP_INCLUDED
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#include <boost/type_traits/intrinsics.hpp>
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#include <boost/type_traits/integral_constant.hpp>
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namespace boost {
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#ifdef BOOST_IS_UNION
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template <class T> struct is_union : public integral_constant<bool, BOOST_IS_UNION(T)> {};
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#else
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template <class T> struct is_union : public integral_constant<bool, false> {};
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#endif
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template <class T> struct is_union<T const> : public is_union<T>{};
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template <class T> struct is_union<T volatile const> : public is_union<T>{};
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template <class T> struct is_union<T volatile> : public is_union<T>{};
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} // namespace boost
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#endif // BOOST_TT_IS_UNION_HPP_INCLUDED
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