#ifndef BOOST_MPL_AUX_UNWRAP_HPP_INCLUDED

 #define BOOST_MPL_AUX_UNWRAP_HPP_INCLUDED

 // Copyright Peter Dimov and Multi Media Ltd 2001, 2002

 // Copyright David Abrahams 2001

 //

 // 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.

 // $Source: /cvsroot/boost/boost/boost/mpl/aux_/unwrap.hpp,v $

 // $Date: 2004/09/02 15:40:44 $

 // $Revision: 1.3 $

 #include <boost/ref.hpp>

 namespace boost { namespace mpl { namespace aux {

 template< typename F >

 inline

 F& unwrap(F& f, long)

 {

     return f;

 }

 template< typename F >

 inline

 F&

 unwrap(reference_wrapper<F>& f, int)

 {

     return f;

 }

 template< typename F >

 inline

 F&

 unwrap(reference_wrapper<F> const& f, int)

 {

     return f;

 }

 }}}

 #endif // BOOST_MPL_AUX_UNWRAP_HPP_INCLUDED