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| 2 | #ifndef BOOST_MPL_O1_SIZE_HPP_INCLUDED
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| 3 | #define BOOST_MPL_O1_SIZE_HPP_INCLUDED
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| 4 |
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| 5 | // Copyright Aleksey Gurtovoy 2000-2004
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| 6 | //
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| 7 | // Distributed under the Boost Software License, Version 1.0.
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| 8 | // (See accompanying file LICENSE_1_0.txt or copy at
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| 9 | // http://www.boost.org/LICENSE_1_0.txt)
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| 10 | //
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| 11 | // See http://www.boost.org/libs/mpl for documentation.
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| 12 |
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| 13 | // $Source: /cvsroot/boost/boost/boost/mpl/O1_size.hpp,v $
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| 14 | // $Date: 2004/09/02 15:40:41 $
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| 15 | // $Revision: 1.5 $
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| 16 |
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| 17 | #include <boost/mpl/O1_size_fwd.hpp>
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| 18 | #include <boost/mpl/sequence_tag.hpp>
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| 19 | #include <boost/mpl/aux_/O1_size_impl.hpp>
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| 20 | #include <boost/mpl/aux_/na_spec.hpp>
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| 21 | #include <boost/mpl/aux_/lambda_support.hpp>
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| 22 |
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| 23 | namespace boost { namespace mpl {
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| 24 |
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| 25 | // returns sequence size if it's an O(1) operation; otherwise returns -1
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| 26 | template<
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| 27 | typename BOOST_MPL_AUX_NA_PARAM(Sequence)
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| 28 | >
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| 29 | struct O1_size
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| 30 | : O1_size_impl< typename sequence_tag<Sequence>::type >
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| 31 | ::template apply< Sequence >
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| 32 | {
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| 33 | BOOST_MPL_AUX_LAMBDA_SUPPORT(1, O1_size, (Sequence))
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| 34 | };
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| 35 |
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| 36 | BOOST_MPL_AUX_NA_SPEC(1, O1_size)
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| 37 |
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| 38 | }}
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| 39 |
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| 40 | #endif // BOOST_MPL_O1_SIZE_HPP_INCLUDED
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