#ifndef BOOST_ARCHIVE_ADD_FACET_HPP

 #define BOOST_ARCHIVE_ADD_FACET_HPP

 // MS compatible compilers support #pragma once

 #if defined(_MSC_VER) && (_MSC_VER >= 1020)

 # pragma once

 #endif

 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8

 // add_facet.hpp

 // (C) Copyright 2003 Robert Ramey - http://www.rrsd.com . 

 // Use, modification and distribution is subject to 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 for updates, documentation, and revision history.

 #include <locale>

 #include <boost/config.hpp>

 #include <boost/detail/workaround.hpp>

 // does STLport uses native STL for locales?

 #if (defined(__SGI_STL_PORT)&& defined(_STLP_NO_OWN_IOSTREAMS))

 // and this native STL lib is old Dinkumware (has not defined _CPPLIB_VER)

 #  if (defined(_YVALS) && !defined(__IBMCPP__)) || !defined(_CPPLIB_VER)

 #    define BOOST_ARCHIVE_OLD_DINKUMWARE_BENEATH_STLPORT

 #  endif

 #endif

 namespace boost { 

 namespace archive {

 template<class Facet>

 inline std::locale * 

 add_facet(const std::locale &l, Facet * f){

     return

         #if defined BOOST_ARCHIVE_OLD_DINKUMWARE_BENEATH_STLPORT 

             // std namespace used for native locale

             new std::locale(std::_Addfac(l, f));

         #elif BOOST_WORKAROUND(BOOST_DINKUMWARE_STDLIB, == 1) // old Dinkumwar

             // std namespace used for native locale

             new std::locale(std::_Addfac(l, f));

         #else

             // standard compatible

             new std::locale(l, f);

         #endif

 }

 } // namespace archive

 } // namespace boost

 #undef BOOST_ARCHIVE_OLD_DINKUMWARE_BENEATH_STLPORT

 #endif // BOOST_ARCHIVE_ADD_FACET_HPP