# /* Copyright (C) 2001#  * Housemarque Oy#  * http://www.housemarque.com#  *#  * 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)#  */## /* Revised by Paul Mensonides (2002) */## /* See http://www.boost.org for most recent version. */## ifndef BOOST_PREPROCESSOR_LIST_AT_HPP# define BOOST_PREPROCESSOR_LIST_AT_HPP## include <boost/preprocessor/config/config.hpp># include <boost/preprocessor/list/adt.hpp># include <boost/preprocessor/list/rest_n.hpp>## /* BOOST_PP_LIST_AT */## if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()#    define BOOST_PP_LIST_AT(list, index) BOOST_PP_LIST_FIRST(BOOST_PP_LIST_REST_N(index, list))# else#    define BOOST_PP_LIST_AT(list, index) BOOST_PP_LIST_AT_I(list, index)#    define BOOST_PP_LIST_AT_I(list, index) BOOST_PP_LIST_FIRST(BOOST_PP_LIST_REST_N(index, list))# endif## /* BOOST_PP_LIST_AT_D */## if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()#    define BOOST_PP_LIST_AT_D(d, list, index) BOOST_PP_LIST_FIRST(BOOST_PP_LIST_REST_N_D(d, index, list))# else#    define BOOST_PP_LIST_AT_D(d, list, index) BOOST_PP_LIST_AT_D_I(d, list, index)#    define BOOST_PP_LIST_AT_D_I(d, list, index) BOOST_PP_LIST_FIRST(BOOST_PP_LIST_REST_N_D(d, index, list))# endif## endif