# /* **************************************************************************

 #  *                                                                          *

 #  *     (C) Copyright Paul Mensonides 2002.

 #  *     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)

 #  *                                                                          *

 #  ************************************************************************** */

 #

 # /* See http://www.boost.org for most recent version. */

 #

 # ifndef BOOST_PREPROCESSOR_ARRAY_REPLACE_HPP

 # define BOOST_PREPROCESSOR_ARRAY_REPLACE_HPP

 #

 # include <boost/preprocessor/arithmetic/inc.hpp>

 # include <boost/preprocessor/array/elem.hpp>

 # include <boost/preprocessor/array/push_back.hpp>

 # include <boost/preprocessor/comparison/not_equal.hpp>

 # include <boost/preprocessor/config/config.hpp>

 # include <boost/preprocessor/control/deduce_d.hpp>

 # include <boost/preprocessor/control/iif.hpp>

 # include <boost/preprocessor/control/while.hpp>

 # include <boost/preprocessor/tuple/elem.hpp>

 #

 # /* BOOST_PP_ARRAY_REPLACE */

 #

 # define BOOST_PP_ARRAY_REPLACE(array, i, elem) BOOST_PP_ARRAY_REPLACE_I(BOOST_PP_DEDUCE_D(), array, i, elem)

 # define BOOST_PP_ARRAY_REPLACE_I(d, array, i, elem) BOOST_PP_ARRAY_REPLACE_D(d, array, i, elem)

 #

 # /* BOOST_PP_ARRAY_REPLACE_D */

 #

 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()

 #    define BOOST_PP_ARRAY_REPLACE_D(d, array, i, elem) BOOST_PP_TUPLE_ELEM(5, 3, BOOST_PP_WHILE_ ## d(BOOST_PP_ARRAY_REPLACE_P, BOOST_PP_ARRAY_REPLACE_O, (0, i, elem, (0, ()), array)))

 # else

 #    define BOOST_PP_ARRAY_REPLACE_D(d, array, i, elem) BOOST_PP_ARRAY_REPLACE_D_I(d, array, i, elem)

 #    define BOOST_PP_ARRAY_REPLACE_D_I(d, array, i, elem) BOOST_PP_TUPLE_ELEM(5, 3, BOOST_PP_WHILE_ ## d(BOOST_PP_ARRAY_REPLACE_P, BOOST_PP_ARRAY_REPLACE_O, (0, i, elem, (0, ()), array)))

 # endif

 #

 # define BOOST_PP_ARRAY_REPLACE_P(d, state) BOOST_PP_NOT_EQUAL(BOOST_PP_TUPLE_ELEM(5, 0, state), BOOST_PP_ARRAY_SIZE(BOOST_PP_TUPLE_ELEM(5, 4, state)))

 #

 # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT()

 #    define BOOST_PP_ARRAY_REPLACE_O(d, state) BOOST_PP_ARRAY_REPLACE_O_I state

 # else

 #    define BOOST_PP_ARRAY_REPLACE_O(d, state) BOOST_PP_ARRAY_REPLACE_O_I(BOOST_PP_TUPLE_ELEM(5, 0, state), BOOST_PP_TUPLE_ELEM(5, 1, state), BOOST_PP_TUPLE_ELEM(5, 2, state), BOOST_PP_TUPLE_ELEM(5, 3, state), BOOST_PP_TUPLE_ELEM(5, 4, state))

 # endif

 #

 # define BOOST_PP_ARRAY_REPLACE_O_I(n, i, elem, res, arr) (BOOST_PP_INC(n), i, elem, BOOST_PP_ARRAY_PUSH_BACK(res, BOOST_PP_IIF(BOOST_PP_NOT_EQUAL(n, i), BOOST_PP_ARRAY_ELEM(n, arr), elem)), arr)

 #

 # endif