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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_POP_BACK_HPP
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13 # define BOOST_PREPROCESSOR_ARRAY_POP_BACK_HPP
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14 #
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15 # include <boost/preprocessor/arithmetic/dec.hpp>
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16 # include <boost/preprocessor/array/elem.hpp>
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17 # include <boost/preprocessor/array/size.hpp>
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18 # include <boost/preprocessor/repetition/enum.hpp>
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19 # include <boost/preprocessor/repetition/deduce_z.hpp>
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20 #
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21 # /* BOOST_PP_ARRAY_POP_BACK */
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22 #
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23 # define BOOST_PP_ARRAY_POP_BACK(array) BOOST_PP_ARRAY_POP_BACK_Z(BOOST_PP_DEDUCE_Z(), array)
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24 #
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25 # /* BOOST_PP_ARRAY_POP_BACK_Z */
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26 #
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27 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
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28 # define BOOST_PP_ARRAY_POP_BACK_Z(z, array) BOOST_PP_ARRAY_POP_BACK_I(z, BOOST_PP_ARRAY_SIZE(array), array)
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29 # else
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30 # define BOOST_PP_ARRAY_POP_BACK_Z(z, array) BOOST_PP_ARRAY_POP_BACK_Z_D(z, array)
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31 # define BOOST_PP_ARRAY_POP_BACK_Z_D(z, array) BOOST_PP_ARRAY_POP_BACK_I(z, BOOST_PP_ARRAY_SIZE(array), array)
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32 # endif
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33 #
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34 # define BOOST_PP_ARRAY_POP_BACK_I(z, size, array) (BOOST_PP_DEC(size), (BOOST_PP_ENUM_ ## z(BOOST_PP_DEC(size), BOOST_PP_ARRAY_POP_BACK_M, array)))
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35 # define BOOST_PP_ARRAY_POP_BACK_M(z, n, data) BOOST_PP_ARRAY_ELEM(n, data)
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36 #
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37 # endif
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