// (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/remove_cv.hpp> | |
#include <boost/type_traits/config.hpp> | |
#include <boost/type_traits/intrinsics.hpp> | |
// should be the last #include | |
#include <boost/type_traits/detail/bool_trait_def.hpp> | |
namespace boost { | |
namespace detail { | |
#ifndef __GNUC__ | |
template <typename T> struct is_union_impl | |
{ | |
typedef typename remove_cv<T>::type cvt; | |
BOOST_STATIC_CONSTANT(bool, value = BOOST_IS_UNION(cvt)); | |
}; | |
#else | |
// | |
// using remove_cv here generates a whole load of needless | |
// warnings with gcc, since it doesn't do any good with gcc | |
// in any case (at least at present), just remove it: | |
// | |
template <typename T> struct is_union_impl | |
{ | |
BOOST_STATIC_CONSTANT(bool, value = BOOST_IS_UNION(T)); | |
}; | |
#endif | |
} // namespace detail | |
BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_union,T,::boost::detail::is_union_impl<T>::value) | |
} // namespace boost | |
#include <boost/type_traits/detail/bool_trait_undef.hpp> | |
#endif // BOOST_TT_IS_UNION_HPP_INCLUDED |