compiler/boost/preprocessor/arithmetic/add.hpp

   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