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65 lines
2 KiB
C++
65 lines
2 KiB
C++
# /* **************************************************************************
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# * *
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# * (C) Copyright Edward Diener 2013.
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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_TUPLE_POP_BACK_HPP
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# define BOOST_PREPROCESSOR_TUPLE_POP_BACK_HPP
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#
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# include <boost/preprocessor/config/config.hpp>
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#
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# if BOOST_PP_VARIADICS
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#
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# include <boost/preprocessor/array/pop_back.hpp>
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# include <boost/preprocessor/array/to_tuple.hpp>
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# include <boost/preprocessor/comparison/greater.hpp>
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# include <boost/preprocessor/control/iif.hpp>
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# include <boost/preprocessor/tuple/size.hpp>
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# include <boost/preprocessor/tuple/to_array.hpp>
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#
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# /* BOOST_PP_TUPLE_POP_BACK */
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#
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# define BOOST_PP_TUPLE_POP_BACK(tuple) \
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BOOST_PP_IIF \
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( \
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BOOST_PP_GREATER(BOOST_PP_TUPLE_SIZE(tuple),1), \
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BOOST_PP_TUPLE_POP_BACK_EXEC, \
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BOOST_PP_TUPLE_POP_BACK_RETURN \
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) \
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(tuple) \
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/**/
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#
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# define BOOST_PP_TUPLE_POP_BACK_EXEC(tuple) \
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BOOST_PP_ARRAY_TO_TUPLE(BOOST_PP_ARRAY_POP_BACK(BOOST_PP_TUPLE_TO_ARRAY(tuple))) \
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/**/
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#
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# define BOOST_PP_TUPLE_POP_BACK_RETURN(tuple) tuple
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#
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# /* BOOST_PP_TUPLE_POP_BACK_Z */
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#
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# define BOOST_PP_TUPLE_POP_BACK_Z(z, tuple) \
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BOOST_PP_IIF \
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( \
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BOOST_PP_GREATER(BOOST_PP_TUPLE_SIZE(tuple),1), \
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BOOST_PP_TUPLE_POP_BACK_Z_EXEC, \
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BOOST_PP_TUPLE_POP_BACK_Z_RETURN \
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) \
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(z, tuple) \
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/**/
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#
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# define BOOST_PP_TUPLE_POP_BACK_Z_EXEC(z, tuple) \
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BOOST_PP_ARRAY_TO_TUPLE(BOOST_PP_ARRAY_POP_BACK_Z(z, BOOST_PP_TUPLE_TO_ARRAY(tuple))) \
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/**/
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#
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# define BOOST_PP_TUPLE_POP_BACK_Z_RETURN(z, tuple) tuple
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#
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# endif // BOOST_PP_VARIADICS
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#
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# endif // BOOST_PREPROCESSOR_TUPLE_POP_BACK_HPP
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