1 # /* Copyright (C) 2001
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3 # * http://www.housemarque.com
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5 # * Distributed under the Boost Software License, Version 1.0. (See
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6 # * accompanying file LICENSE_1_0.txt or copy at
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7 # * http://www.boost.org/LICENSE_1_0.txt)
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10 # /* Revised by Paul Mensonides (2002) */
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12 # /* See http://www.boost.org for most recent version. */
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14 # ifndef BOOST_PREPROCESSOR_LIST_AT_HPP
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15 # define BOOST_PREPROCESSOR_LIST_AT_HPP
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17 # include <boost/preprocessor/config/config.hpp>
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18 # include <boost/preprocessor/list/adt.hpp>
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19 # include <boost/preprocessor/list/rest_n.hpp>
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21 # /* BOOST_PP_LIST_AT */
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23 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
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24 # define BOOST_PP_LIST_AT(list, index) BOOST_PP_LIST_FIRST(BOOST_PP_LIST_REST_N(index, list))
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26 # define BOOST_PP_LIST_AT(list, index) BOOST_PP_LIST_AT_I(list, index)
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27 # define BOOST_PP_LIST_AT_I(list, index) BOOST_PP_LIST_FIRST(BOOST_PP_LIST_REST_N(index, list))
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30 # /* BOOST_PP_LIST_AT_D */
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32 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
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33 # define BOOST_PP_LIST_AT_D(d, list, index) BOOST_PP_LIST_FIRST(BOOST_PP_LIST_REST_N_D(d, index, list))
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35 # define BOOST_PP_LIST_AT_D(d, list, index) BOOST_PP_LIST_AT_D_I(d, list, index)
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36 # define BOOST_PP_LIST_AT_D_I(d, list, index) BOOST_PP_LIST_FIRST(BOOST_PP_LIST_REST_N_D(d, index, list))
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