preprocessor/facilities/is_1.hpp

0001 # /* **************************************************************************
0002 #  *                                                                          *
0003 #  *     (C) Copyright Paul Mensonides 2003.
0004 #  *     Distributed under the Boost Software License, Version 1.0. (See
0005 #  *     accompanying file LICENSE_1_0.txt or copy at
0006 #  *     http://www.boost.org/LICENSE_1_0.txt)
0007 #  *                                                                          *
0008 #  ************************************************************************** */
0009 #
0010 # /* See http://www.boost.org for most recent version. */
0011 #
0012 # ifndef BOOST_PREPROCESSOR_FACILITIES_IS_1_HPP
0013 # define BOOST_PREPROCESSOR_FACILITIES_IS_1_HPP
0014 #
0015 # include <boost/preprocessor/cat.hpp>
0016 # include <boost/preprocessor/facilities/is_empty.hpp>
0017 #
0018 # /* BOOST_PP_IS_1 */
0019 #
0020 # define BOOST_PP_IS_1(x) BOOST_PP_IS_EMPTY(BOOST_PP_CAT(BOOST_PP_IS_1_HELPER_, x))
0021 # define BOOST_PP_IS_1_HELPER_1
0022 #
0023 # endif