1 

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

     3 //  subject to the Boost Software License, Version 1.0. (See accompanying

     4 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

     5 

     6 //  Based on Peter Dimov's proposal

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

     8 //  issue 6.18. 

     9 

    10 #if !defined(BOOST_FUNCTIONAL_HASH_FWD_HPP)

    11 #define BOOST_FUNCTIONAL_HASH_FWD_HPP

    12 

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

    14 # pragma once

    15 #endif

    16 

    17 #include <boost/config.hpp>

    18 #include <cstddef>

    19 #include <boost/detail/workaround.hpp>

    20 

    21 namespace boost

    22 {

    23     template <class T> struct hash;

    24 

    25 #if BOOST_WORKAROUND(BOOST_MSVC, < 1300)

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

    27 #else

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

    29 #endif

    30 

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

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

    33 

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

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

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

    37 #endif

    38 }

    39 

    40 #endif