na_fwd.hpp 673 B

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  1. #ifndef BOOST_MPL_AUX_NA_FWD_HPP_INCLUDED
  2. #define BOOST_MPL_AUX_NA_FWD_HPP_INCLUDED
  3. // Copyright Aleksey Gurtovoy 2001-2004
  4. //
  5. // Distributed under the Boost Software License, Version 1.0.
  6. // (See accompanying file LICENSE_1_0.txt or copy at
  7. // http://www.boost.org/LICENSE_1_0.txt)
  8. //
  9. // See http://www.boost.org/libs/mpl for documentation.
  10. // $Id$
  11. // $Date$
  12. // $Revision$
  13. #include <boost/mpl/aux_/adl_barrier.hpp>
  14. BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN
  15. // n.a. == not available
  16. struct na
  17. {
  18. typedef na type;
  19. enum { value = 0 };
  20. };
  21. BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE
  22. BOOST_MPL_AUX_ADL_BARRIER_DECL(na)
  23. #endif // BOOST_MPL_AUX_NA_FWD_HPP_INCLUDED