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1 # /* **************************************************************************
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2 # * *
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3 # * (C) Copyright Paul Mensonides 2002.
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4 # * Distributed under the Boost Software License, Version 1.0. (See
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5 # * accompanying file LICENSE_1_0.txt or copy at
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6 # * http://www.boost.org/LICENSE_1_0.txt)
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7 # * *
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8 # ************************************************************************** */
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9 #
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10 # /* See http://www.boost.org for most recent version. */
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11 #
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12 # ifndef BOOST_PREPROCESSOR_ARRAY_REMOVE_HPP
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13 # define BOOST_PREPROCESSOR_ARRAY_REMOVE_HPP
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14 #
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15 # include <boost/preprocessor/arithmetic/inc.hpp>
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16 # include <boost/preprocessor/array/elem.hpp>
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17 # include <boost/preprocessor/array/push_back.hpp>
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18 # include <boost/preprocessor/array/size.hpp>
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19 # include <boost/preprocessor/comparison/not_equal.hpp>
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20 # include <boost/preprocessor/control/deduce_d.hpp>
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21 # include <boost/preprocessor/control/iif.hpp>
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22 # include <boost/preprocessor/control/while.hpp>
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23 # include <boost/preprocessor/tuple/eat.hpp>
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24 # include <boost/preprocessor/tuple/elem.hpp>
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25 #
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26 # /* BOOST_PP_ARRAY_REMOVE */
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27 #
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28 # define BOOST_PP_ARRAY_REMOVE(array, i) BOOST_PP_ARRAY_REMOVE_I(BOOST_PP_DEDUCE_D(), array, i)
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29 # define BOOST_PP_ARRAY_REMOVE_I(d, array, i) BOOST_PP_ARRAY_REMOVE_D(d, array, i)
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30 #
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31 # /* BOOST_PP_ARRAY_REMOVE_D */
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32 #
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33 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
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34 # define BOOST_PP_ARRAY_REMOVE_D(d, array, i) BOOST_PP_TUPLE_ELEM(4, 2, BOOST_PP_WHILE_ ## d(BOOST_PP_ARRAY_REMOVE_P, BOOST_PP_ARRAY_REMOVE_O, (0, i, (0, ()), array)))
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35 # else
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36 # define BOOST_PP_ARRAY_REMOVE_D(d, array, i) BOOST_PP_ARRAY_REMOVE_D_I(d, array, i)
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37 # define BOOST_PP_ARRAY_REMOVE_D_I(d, array, i) BOOST_PP_TUPLE_ELEM(4, 2, BOOST_PP_WHILE_ ## d(BOOST_PP_ARRAY_REMOVE_P, BOOST_PP_ARRAY_REMOVE_O, (0, i, (0, ()), array)))
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38 # endif
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39 #
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40 # define BOOST_PP_ARRAY_REMOVE_P(d, st) BOOST_PP_NOT_EQUAL(BOOST_PP_TUPLE_ELEM(4, 0, st), BOOST_PP_ARRAY_SIZE(BOOST_PP_TUPLE_ELEM(4, 3, st)))
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41 #
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42 # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT()
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43 # define BOOST_PP_ARRAY_REMOVE_O(d, st) BOOST_PP_ARRAY_REMOVE_O_I st
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44 # else
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45 # define BOOST_PP_ARRAY_REMOVE_O(d, st) BOOST_PP_ARRAY_REMOVE_O_I(BOOST_PP_TUPLE_ELEM(4, 0, st), BOOST_PP_TUPLE_ELEM(4, 1, st), BOOST_PP_TUPLE_ELEM(4, 2, st), BOOST_PP_TUPLE_ELEM(4, 3, st))
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46 # endif
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47 #
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48 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_DMC()
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49 # define BOOST_PP_ARRAY_REMOVE_O_I(n, i, res, arr) (BOOST_PP_INC(n), i, BOOST_PP_IIF(BOOST_PP_NOT_EQUAL(n, i), BOOST_PP_ARRAY_PUSH_BACK, res BOOST_PP_TUPLE_EAT_2)(res, BOOST_PP_ARRAY_ELEM(n, arr)), arr)
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50 # else
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51 # define BOOST_PP_ARRAY_REMOVE_O_I(n, i, res, arr) (BOOST_PP_INC(n), i, BOOST_PP_IIF(BOOST_PP_NOT_EQUAL(n, i), BOOST_PP_ARRAY_PUSH_BACK, BOOST_PP_TUPLE_ELEM_2_0)(res, BOOST_PP_ARRAY_ELEM(n, arr)), arr)
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52 # endif
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53 #
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54 # endif
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