--- /dev/null
+/* Copyright 2003-2007 Joaquín M López Muñoz.
+ * 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/multi_index for library home page.
+ */
+
+#ifndef BOOST_MULTI_INDEX_DETAIL_ADL_SWAP_HPP
+#define BOOST_MULTI_INDEX_DETAIL_ADL_SWAP_HPP
+
+#if defined(_MSC_VER)&&(_MSC_VER>=1200)
+#pragma once
+#endif
+
+#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
+#include <algorithm>
+
+namespace boost{
+
+namespace multi_index{
+
+namespace detail{
+
+template<typename T>
+void adl_swap(T& x,T& y)
+{
+
+#if !defined(BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL)
+ using std::swap;
+ swap(x,y);
+#else
+ std::swap(x,y);
+#endif
+
+}
+
+} /* namespace multi_index::detail */
+
+} /* namespace multi_index */
+
+} /* namespace boost */
+
+#endif