text: 
  #ifndef BOOST_MPL_AUX_NA_ASSERT_HPP_INCLUDED
  #define BOOST_MPL_AUX_NA_ASSERT_HPP_INCLUDED
  
  // Copyright Aleksey Gurtovoy 2001-2004
  //
  // 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.
  
  // $Id$
  // $Date$
  // $Revision$
  
  #include <boost/mpl/aux_/na.hpp>
  #include <boost/mpl/aux_/config/msvc.hpp>
  #include <boost/mpl/aux_/config/workaround.hpp>
  
  #if !BOOST_WORKAROUND(_MSC_FULL_VER, <= 140050601)    \
      && !BOOST_WORKAROUND(__EDG_VERSION__, <= 243)
  #   include <boost/mpl/assert.hpp>
  #   define BOOST_MPL_AUX_ASSERT_NOT_NA(x) \
      BOOST_MPL_ASSERT_NOT((lslboost::mpl::is_na<type>)) \
  /**/
  #else
  #   include <boost/static_assert.hpp>
  #   define BOOST_MPL_AUX_ASSERT_NOT_NA(x) \
      BOOST_STATIC_ASSERT(!lslboost::mpl::is_na<x>::value) \
  /**/
  #endif
  
  #endif // BOOST_MPL_AUX_NA_ASSERT_HPP_INCLUDED
  