williamr@2: 
williamr@2: //  Copyright Daniel James 2005-2006. Use, modification, and distribution are
williamr@2: //  subject to the Boost Software License, Version 1.0. (See accompanying
williamr@2: //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
williamr@2: 
williamr@2: //  Based on Peter Dimov's proposal
williamr@2: //  http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf
williamr@2: //  issue 6.18. 
williamr@2: 
williamr@2: #if !defined(BOOST_FUNCTIONAL_HASH_FWD_HPP)
williamr@2: #define BOOST_FUNCTIONAL_HASH_FWD_HPP
williamr@2: 
williamr@2: #if defined(_MSC_VER) && (_MSC_VER >= 1020)
williamr@2: # pragma once
williamr@2: #endif
williamr@2: 
williamr@2: #include <boost/config.hpp>
williamr@2: #include <cstddef>
williamr@2: #include <boost/detail/workaround.hpp>
williamr@2: 
williamr@2: namespace boost
williamr@2: {
williamr@2:     template <class T> struct hash;
williamr@2: 
williamr@2: #if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
williamr@2:     template <class T> void hash_combine(std::size_t& seed, T& v);
williamr@2: #else
williamr@2:     template <class T> void hash_combine(std::size_t& seed, T const& v);
williamr@2: #endif
williamr@2: 
williamr@2:     template <class It> std::size_t hash_range(It, It);
williamr@2:     template <class It> void hash_range(std::size_t&, It, It);
williamr@2: 
williamr@2: #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
williamr@2:     template <class T> inline std::size_t hash_range(T*, T*);
williamr@2:     template <class T> inline void hash_range(std::size_t&, T*, T*);
williamr@2: #endif
williamr@2: }
williamr@2: 
williamr@2: #endif