# /* Copyright (C) 2001 | |
# * Housemarque Oy | |
# * http://www.housemarque.com | |
# * | |
# * 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) | |
# */ | |
# | |
# /* Revised by Paul Mensonides (2002) */ | |
# | |
# /* See http://www.boost.org for most recent version. */ | |
# | |
# ifndef BOOST_PREPROCESSOR_ARITHMETIC_SUB_HPP | |
# define BOOST_PREPROCESSOR_ARITHMETIC_SUB_HPP | |
# | |
# include <boost/preprocessor/arithmetic/dec.hpp> | |
# include <boost/preprocessor/config/config.hpp> | |
# include <boost/preprocessor/control/while.hpp> | |
# include <boost/preprocessor/tuple/elem.hpp> | |
# | |
# /* BOOST_PP_SUB */ | |
# | |
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() | |
# 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))) | |
# else | |
# define BOOST_PP_SUB(x, y) BOOST_PP_SUB_I(x, y) | |
# 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))) | |
# endif | |
# | |
# define BOOST_PP_SUB_P(d, xy) BOOST_PP_TUPLE_ELEM(2, 1, xy) | |
# | |
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC() | |
# define BOOST_PP_SUB_O(d, xy) BOOST_PP_SUB_O_I xy | |
# else | |
# 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)) | |
# endif | |
# | |
# define BOOST_PP_SUB_O_I(x, y) (BOOST_PP_DEC(x), BOOST_PP_DEC(y)) | |
# | |
# /* BOOST_PP_SUB_D */ | |
# | |
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() | |
# 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))) | |
# else | |
# define BOOST_PP_SUB_D(d, x, y) BOOST_PP_SUB_D_I(d, x, y) | |
# 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))) | |
# endif | |
# | |
# endif |