1# /* Copyright (C) 2001
2# * Housemarque Oy
3# * http://www.housemarque.com
4# *
5# * Distributed under the Boost Software License, Version 1.0. (See
6# * accompanying file LICENSE_1_0.txt or copy at
7# * http://www.boost.org/LICENSE_1_0.txt)
8# */
9#
10# /* Revised by Paul Mensonides (2002) */
11#
12# /* See http://www.boost.org for most recent version. */
13#
14# ifndef BOOST_PREPROCESSOR_ARITHMETIC_ADD_HPP
15# define BOOST_PREPROCESSOR_ARITHMETIC_ADD_HPP
16#
17# include <boost/preprocessor/arithmetic/dec.hpp>
18# include <boost/preprocessor/arithmetic/inc.hpp>
19# include <boost/preprocessor/config/config.hpp>
20# include <boost/preprocessor/control/while.hpp>
21# include <boost/preprocessor/tuple/elem.hpp>
22#
23# /* BOOST_PP_ADD */
24#
25# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
26# define BOOST_PP_ADD(x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_ADD_P, BOOST_PP_ADD_O, (x, y)))
27# else
28# define BOOST_PP_ADD(x, y) BOOST_PP_ADD_I(x, y)
29# define BOOST_PP_ADD_I(x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_ADD_P, BOOST_PP_ADD_O, (x, y)))
30# endif
31#
32# define BOOST_PP_ADD_P(d, xy) BOOST_PP_TUPLE_ELEM(2, 1, xy)
33#
34# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
35# define BOOST_PP_ADD_O(d, xy) BOOST_PP_ADD_O_I xy
36# else
37# define BOOST_PP_ADD_O(d, xy) BOOST_PP_ADD_O_I(BOOST_PP_TUPLE_ELEM(2, 0, xy), BOOST_PP_TUPLE_ELEM(2, 1, xy))
38# endif
39#
40# define BOOST_PP_ADD_O_I(x, y) (BOOST_PP_INC(x), BOOST_PP_DEC(y))
41#
42# /* BOOST_PP_ADD_D */
43#
44# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
45# define BOOST_PP_ADD_D(d, x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_ADD_P, BOOST_PP_ADD_O, (x, y)))
46# else
47# define BOOST_PP_ADD_D(d, x, y) BOOST_PP_ADD_D_I(d, x, y)
48# define BOOST_PP_ADD_D_I(d, x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_ADD_P, BOOST_PP_ADD_O, (x, y)))
49# endif
50#
51# endif
52