31 lines
1.4 KiB
C++
31 lines
1.4 KiB
C++
# /* **************************************************************************
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# * *
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# * (C) Copyright Paul Mensonides 2002.
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# * Distributed under the Boost Software License, Version 1.0. (See
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# * accompanying file LICENSE_1_0.txt or copy at
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# * http://www.boost.org/LICENSE_1_0.txt)
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# * *
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# ************************************************************************** */
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#
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# /* See http://www.boost.org for most recent version. */
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#
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# ifndef BOOST_PREPROCESSOR_SEQ_FIRST_N_HPP
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# define BOOST_PREPROCESSOR_SEQ_FIRST_N_HPP
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#
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# include <boost/preprocessor/config/config.hpp>
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# include <boost/preprocessor/control/if.hpp>
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# include <boost/preprocessor/seq/detail/split.hpp>
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# include <boost/preprocessor/tuple/eat.hpp>
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# include <boost/preprocessor/tuple/elem.hpp>
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#
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# /* BOOST_PP_SEQ_FIRST_N */
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#
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# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
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# define BOOST_PP_SEQ_FIRST_N(n, seq) BOOST_PP_IF(n, BOOST_PP_TUPLE_ELEM, BOOST_PP_TUPLE_EAT_3)(2, 0, BOOST_PP_SEQ_SPLIT(n, seq (nil)))
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# else
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# define BOOST_PP_SEQ_FIRST_N(n, seq) BOOST_PP_SEQ_FIRST_N_I(n, seq)
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# define BOOST_PP_SEQ_FIRST_N_I(n, seq) BOOST_PP_IF(n, BOOST_PP_TUPLE_ELEM, BOOST_PP_TUPLE_EAT_3)(2, 0, BOOST_PP_SEQ_SPLIT(n, seq (nil)))
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# endif
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#
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# endif
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