preprocessor/seq/pop_back.hpp

0001 # /* **************************************************************************
0002 #  *                                                                          *
0003 #  *     (C) Copyright Paul Mensonides 2002.
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_SEQ_POP_BACK_HPP
0013 # define BOOST_PREPROCESSOR_SEQ_POP_BACK_HPP
0014 #
0015 # include <boost/preprocessor/arithmetic/dec.hpp>
0016 # include <boost/preprocessor/config/config.hpp>
0017 # include <boost/preprocessor/seq/first_n.hpp>
0018 # include <boost/preprocessor/seq/size.hpp>
0019 #
0020 # /* BOOST_PP_SEQ_POP_BACK */
0021 #
0022 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
0023 #    define BOOST_PP_SEQ_POP_BACK(seq) BOOST_PP_SEQ_FIRST_N(BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(seq)), seq)
0024 # else
0025 #    define BOOST_PP_SEQ_POP_BACK(seq) BOOST_PP_SEQ_POP_BACK_I(seq)
0026 #    define BOOST_PP_SEQ_POP_BACK_I(seq) BOOST_PP_SEQ_FIRST_N(BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(seq)), seq)
0027 # endif
0028 #
0029 # endif