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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_ADD_CONST_HPP_INCLUDED
+#define BOOST_TT_ADD_CONST_HPP_INCLUDED
+
+#include <cutl/details/boost/config.hpp>
+
+// should be the last #include
+#include <cutl/details/boost/type_traits/detail/type_trait_def.hpp>
+
+namespace cutl_details_boost {
+
+// * convert a type T to const type - add_const<T>
+// this is not required since the result is always
+// the same as "T const", but it does suppress warnings
+// from some compilers:
+
+#if defined(BOOST_MSVC)
+// This bogus warning will appear when add_const is applied to a
+// const volatile reference because we can't detect const volatile
+// references with MSVC6.
+# pragma warning(push)
+# pragma warning(disable:4181) // warning C4181: qualifier applied to reference type ignored
+#endif
+
+BOOST_TT_AUX_TYPE_TRAIT_DEF1(add_const,T,T const)
+
+#if defined(BOOST_MSVC)
+# pragma warning(pop)
+#endif
+
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_1(typename T,add_const,T&,T&)
+#endif
+
+} // namespace cutl_details_boost
+
+#include <cutl/details/boost/type_traits/detail/type_trait_undef.hpp>
+
+#endif // BOOST_TT_ADD_CONST_HPP_INCLUDED