1# /* Copyright (C) 2001
2# * Housemarque Oy
3# * http://www.housemarque.com
4# *
5# * Distributed under the Boost Software License, Version 1.0. (See
6# * accompanying file LICENSE_1_0.txt or copy at
7# * http://www.boost.org/LICENSE_1_0.txt)
8# */
9#
10# /* Revised by Paul Mensonides (2002) */
11#
12# /* See http://www.boost.org for most recent version. */
13#
14# ifndef BOOST_PREPROCESSOR_FACILITIES_EXPAND_HPP
15# define BOOST_PREPROCESSOR_FACILITIES_EXPAND_HPP
16#
17# include <boost/preprocessor/config/config.hpp>
18#
19# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC() && ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_DMC()
20# define BOOST_PP_EXPAND(x) BOOST_PP_EXPAND_I(x)
21# else
22# define BOOST_PP_EXPAND(x) BOOST_PP_EXPAND_OO((x))
23# define BOOST_PP_EXPAND_OO(par) BOOST_PP_EXPAND_I ## par
24# endif
25#
26# define BOOST_PP_EXPAND_I(x) x
27#
28# endif
29

source code of include/boost/preprocessor/facilities/expand.hpp