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50 lines
1.8 KiB
50 lines
1.8 KiB
# /* Copyright (C) 2001 |
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# * Housemarque Oy |
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# * http://www.housemarque.com |
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# * |
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# * Distributed under the Boost Software License, Version 1.0. (See |
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# * accompanying file LICENSE_1_0.txt or copy at |
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# * http://www.boost.org/LICENSE_1_0.txt) |
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# */ |
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# |
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# /* Revised by Paul Mensonides (2002) */ |
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# |
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# /* See http://www.boost.org for most recent version. */ |
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# |
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# ifndef BOOST_PREPROCESSOR_ARITHMETIC_SUB_HPP |
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# define BOOST_PREPROCESSOR_ARITHMETIC_SUB_HPP |
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# |
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# include <boost/preprocessor/arithmetic/dec.hpp> |
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# include <boost/preprocessor/config/config.hpp> |
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# include <boost/preprocessor/control/while.hpp> |
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# include <boost/preprocessor/tuple/elem.hpp> |
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# |
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# /* BOOST_PP_SUB */ |
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# |
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# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() |
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# 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))) |
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# else |
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# define BOOST_PP_SUB(x, y) BOOST_PP_SUB_I(x, y) |
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# 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))) |
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# endif |
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# |
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# define BOOST_PP_SUB_P(d, xy) BOOST_PP_TUPLE_ELEM(2, 1, xy) |
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# |
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# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC() |
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# define BOOST_PP_SUB_O(d, xy) BOOST_PP_SUB_O_I xy |
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# else |
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# 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)) |
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# endif |
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# |
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# define BOOST_PP_SUB_O_I(x, y) (BOOST_PP_DEC(x), BOOST_PP_DEC(y)) |
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# |
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# /* BOOST_PP_SUB_D */ |
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# |
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# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() |
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# 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))) |
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# else |
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# define BOOST_PP_SUB_D(d, x, y) BOOST_PP_SUB_D_I(d, x, y) |
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# 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))) |
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# endif |
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# |
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# endif
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