author | mikek |
Mon, 10 May 2010 19:54:49 +0100 | |
changeset 2 | 39c28ec933dd |
permissions | -rwxr-xr-x |
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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/remove_cv.hpp> |
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#include <boost/type_traits/config.hpp> |
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#include <boost/type_traits/intrinsics.hpp> |
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// should be the last #include |
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#include <boost/type_traits/detail/bool_trait_def.hpp> |
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namespace boost { |
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namespace detail { |
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#ifndef __GNUC__ |
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template <typename T> struct is_union_impl |
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{ |
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typedef typename remove_cv<T>::type cvt; |
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BOOST_STATIC_CONSTANT(bool, value = BOOST_IS_UNION(cvt)); |
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}; |
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#else |
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// |
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// using remove_cv here generates a whole load of needless |
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// warnings with gcc, since it doesn't do any good with gcc |
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// in any case (at least at present), just remove it: |
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// |
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template <typename T> struct is_union_impl |
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{ |
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BOOST_STATIC_CONSTANT(bool, value = BOOST_IS_UNION(T)); |
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}; |
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#endif |
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} // namespace detail |
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BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_union,T,::boost::detail::is_union_impl<T>::value) |
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} // namespace boost |
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#include <boost/type_traits/detail/bool_trait_undef.hpp> |
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#endif // BOOST_TT_IS_UNION_HPP_INCLUDED |