#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