//  Copyright Daniel James 2005-2006. Use, modification, and distribution are

 //  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)

 //  Based on Peter Dimov's proposal

 //  http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf

 //  issue 6.18. 

 #if !defined(BOOST_FUNCTIONAL_HASH_FWD_HPP)

 #define BOOST_FUNCTIONAL_HASH_FWD_HPP

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

 # pragma once

 #endif

 #include <boost/config.hpp>

 #include <cstddef>

 #include <boost/detail/workaround.hpp>

 namespace boost

 {

     template <class T> struct hash;

 #if BOOST_WORKAROUND(BOOST_MSVC, < 1300)

     template <class T> void hash_combine(std::size_t& seed, T& v);

 #else

     template <class T> void hash_combine(std::size_t& seed, T const& v);

 #endif

     template <class It> std::size_t hash_range(It, It);

     template <class It> void hash_range(std::size_t&, It, It);

 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))

     template <class T> inline std::size_t hash_range(T*, T*);

     template <class T> inline void hash_range(std::size_t&, T*, T*);

 #endif

 }

 #endif