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+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2015-2015.
+// Distributed under 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/move for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//! \file
+
+#ifndef BOOST_MOVE_DETAIL_META_UTILS_CORE_HPP
+#define BOOST_MOVE_DETAIL_META_UTILS_CORE_HPP
+
+#ifndef BOOST_CONFIG_HPP
+# include <boost/config.hpp>
+#endif
+#
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+# pragma once
+#endif
+
+//Small meta-typetraits to support move
+
+namespace boost {
+namespace move_detail {
+
+//////////////////////////////////////
+// if_c
+//////////////////////////////////////
+template<bool C, typename T1, typename T2>
+struct if_c
+{
+ typedef T1 type;
+};
+
+template<typename T1, typename T2>
+struct if_c<false,T1,T2>
+{
+ typedef T2 type;
+};
+
+//////////////////////////////////////
+// if_
+//////////////////////////////////////
+template<typename T1, typename T2, typename T3>
+struct if_ : if_c<0 != T1::value, T2, T3>
+{};
+
+//enable_if_
+template <bool B, class T = void>
+struct enable_if_c
+{
+ typedef T type;
+};
+
+//////////////////////////////////////
+// enable_if_c
+//////////////////////////////////////
+template <class T>
+struct enable_if_c<false, T> {};
+
+//////////////////////////////////////
+// enable_if
+//////////////////////////////////////
+template <class Cond, class T = void>
+struct enable_if : enable_if_c<Cond::value, T> {};
+
+//////////////////////////////////////
+// disable_if
+//////////////////////////////////////
+template <class Cond, class T = void>
+struct disable_if : enable_if_c<!Cond::value, T> {};
+
+//////////////////////////////////////
+// integral_constant
+//////////////////////////////////////
+template<class T, T v>
+struct integral_constant
+{
+ static const T value = v;
+ typedef T value_type;
+ typedef integral_constant<T, v> type;
+};
+
+typedef integral_constant<bool, true > true_type;
+typedef integral_constant<bool, false > false_type;
+
+//////////////////////////////////////
+// identity
+//////////////////////////////////////
+template <class T>
+struct identity
+{
+ typedef T type;
+};
+
+//////////////////////////////////////
+// is_same
+//////////////////////////////////////
+template<class T, class U>
+struct is_same
+{
+ static const bool value = false;
+};
+
+template<class T>
+struct is_same<T, T>
+{
+ static const bool value = true;
+};
+
+} //namespace move_detail {
+} //namespace boost {
+
+#endif //#ifndef BOOST_MOVE_DETAIL_META_UTILS_CORE_HPP