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+
+// Copyright Aleksey Gurtovoy 2000-2004
+//
+// 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/mpl for documentation.
+
+// $Id$
+// $Date$
+// $Revision$
+
+#include <boost/mpl/next.hpp>
+#include <boost/mpl/prior.hpp>
+#include <boost/mpl/int.hpp>
+#include <boost/mpl/aux_/test.hpp>
+
+MPL_TEST_CASE()
+{
+ typedef int_<0> _0;
+ typedef int_<1> _1;
+ typedef int_<2> _2;
+
+ MPL_ASSERT(( is_same< next<_0>::type, _1 > ));
+ MPL_ASSERT(( is_same< next<_1>::type, _2 > ));
+ MPL_ASSERT(( is_same< prior<_1>::type, _0 > ));
+ MPL_ASSERT(( is_same< prior<_2>::type, _1 > ));
+}