--- /dev/null
+# /* **************************************************************************
+# * *
+# * (C) Copyright Paul Mensonides 2002.
+# * 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 for most recent version. */
+#
+# ifndef BOOST_PREPROCESSOR_LOGICAL_BITOR_HPP
+# define BOOST_PREPROCESSOR_LOGICAL_BITOR_HPP
+#
+# include <boost/preprocessor/config/config.hpp>
+#
+# /* BOOST_PP_BITOR */
+#
+# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
+# define BOOST_PP_BITOR(x, y) BOOST_PP_BITOR_I(x, y)
+# else
+# define BOOST_PP_BITOR(x, y) BOOST_PP_BITOR_OO((x, y))
+# define BOOST_PP_BITOR_OO(par) BOOST_PP_BITOR_I ## par
+# endif
+#
+# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
+# define BOOST_PP_BITOR_I(x, y) BOOST_PP_BITOR_ ## x ## y
+# else
+# define BOOST_PP_BITOR_I(x, y) BOOST_PP_BITOR_ID(BOOST_PP_BITOR_ ## x ## y)
+# define BOOST_PP_BITOR_ID(id) id
+# endif
+#
+# define BOOST_PP_BITOR_00 0
+# define BOOST_PP_BITOR_01 1
+# define BOOST_PP_BITOR_10 1
+# define BOOST_PP_BITOR_11 1
+#
+# endif