text: 
  #ifndef BOOST_MPL_STABLE_PARTITION_HPP_INCLUDED
  #define BOOST_MPL_STABLE_PARTITION_HPP_INCLUDED
  
  // Copyright Eric Friedman 2002-2003
  // Copyright Aleksey Gurtovoy 2004
  //
  // 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)
  //
  // See http://www.boost.org/libs/mpl for documentation.
  
  // $Id: stable_partition.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
  // $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
  // $Revision: 49267 $
  
  #include <boost/mpl/fold.hpp>
  #include <boost/mpl/reverse_fold.hpp>
  #include <boost/mpl/protect.hpp>
  #include <boost/mpl/aux_/partition_op.hpp>
  #include <boost/mpl/aux_/inserter_algorithm.hpp>
  #include <boost/mpl/aux_/na.hpp>
  
  namespace boost { namespace mpl {
  
  namespace aux {
   
  template <
        typename Sequence
      , typename Pred
      , typename In
      , typename In2
      , typename In1 = typename if_na<In,In2>::type
      >
  struct stable_partition_impl
      : fold<
            Sequence
          , pair< typename In1::state, typename In2::state >
          , protect< partition_op< 
                Pred
              , typename In1::operation
              , typename In2::operation
              > >
          >
  {
  };
  
  template <
        typename Sequence
      , typename Pred
      , typename In
      , typename In2
      , typename In1 = typename if_na<In,In2>::type
      >
  struct reverse_stable_partition_impl
      : reverse_fold<
            Sequence
          , pair< typename In1::state, typename In2::state >
          , protect< partition_op< 
                Pred
              , typename In1::operation
              , typename In2::operation
              > >
          >
  {
  };
  
  } // namespace aux
  
  BOOST_MPL_AUX_INSERTER_ALGORITHM_DEF(4, stable_partition)
  
  }}
  
  #endif // BOOST_MPL_STABLE_PARTITION_HPP_INCLUDED
  