williamr@2: # /* Copyright (C) 2001 williamr@2: # * Housemarque Oy williamr@2: # * http://www.housemarque.com williamr@2: # * williamr@2: # * Distributed under the Boost Software License, Version 1.0. (See williamr@2: # * accompanying file LICENSE_1_0.txt or copy at williamr@2: # * http://www.boost.org/LICENSE_1_0.txt) williamr@2: # */ williamr@2: # williamr@2: # /* Revised by Paul Mensonides (2002) */ williamr@2: # williamr@2: # /* See http://www.boost.org for most recent version. */ williamr@2: # williamr@2: # ifndef BOOST_PREPROCESSOR_ARITHMETIC_SUB_HPP williamr@2: # define BOOST_PREPROCESSOR_ARITHMETIC_SUB_HPP williamr@2: # williamr@2: # include williamr@2: # include williamr@2: # include williamr@2: # include williamr@2: # williamr@2: # /* BOOST_PP_SUB */ williamr@2: # williamr@2: # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() williamr@2: # define BOOST_PP_SUB(x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_SUB_P, BOOST_PP_SUB_O, (x, y))) williamr@2: # else williamr@2: # define BOOST_PP_SUB(x, y) BOOST_PP_SUB_I(x, y) williamr@2: # define BOOST_PP_SUB_I(x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_SUB_P, BOOST_PP_SUB_O, (x, y))) williamr@2: # endif williamr@2: # williamr@2: # define BOOST_PP_SUB_P(d, xy) BOOST_PP_TUPLE_ELEM(2, 1, xy) williamr@2: # williamr@2: # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC() williamr@2: # define BOOST_PP_SUB_O(d, xy) BOOST_PP_SUB_O_I xy williamr@2: # else williamr@2: # define BOOST_PP_SUB_O(d, xy) BOOST_PP_SUB_O_I(BOOST_PP_TUPLE_ELEM(2, 0, xy), BOOST_PP_TUPLE_ELEM(2, 1, xy)) williamr@2: # endif williamr@2: # williamr@2: # define BOOST_PP_SUB_O_I(x, y) (BOOST_PP_DEC(x), BOOST_PP_DEC(y)) williamr@2: # williamr@2: # /* BOOST_PP_SUB_D */ williamr@2: # williamr@2: # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() williamr@2: # define BOOST_PP_SUB_D(d, x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_SUB_P, BOOST_PP_SUB_O, (x, y))) williamr@2: # else williamr@2: # define BOOST_PP_SUB_D(d, x, y) BOOST_PP_SUB_D_I(d, x, y) williamr@2: # define BOOST_PP_SUB_D_I(d, x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_SUB_P, BOOST_PP_SUB_O, (x, y))) williamr@2: # endif williamr@2: # williamr@2: # endif