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/* Copyright 2003-2008 Joaquin M Lopez Munoz.
 * Distributed under the Boost Software License, Version 1.0.
 * (See accompanying file LICENSE_1_0.txt or copy at
 * See for library home page.


#if defined(_MSC_VER)&&(_MSC_VER>=1200)
#pragma once

#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
#include <boost/mpl/bool.hpp>

namespace boost{

namespace multi_index{

namespace detail{

/* has_uintptr_type is an MPL integral constant determining whether
 * there exists an unsigned integral type with the same size as
 * void *.
 * uintptr_type is such a type if has_uintptr is true, or unsigned int
 * otherwise.
 * Note that uintptr_type is more restrictive than C99 uintptr_t,
 * where an integral type with size greater than that of void *
 * would be conformant.

template<int N>struct uintptr_candidates;
template<>struct uintptr_candidates<-1>{typedef unsigned int           type;};
template<>struct uintptr_candidates<0> {typedef unsigned int           type;};
template<>struct uintptr_candidates<1> {typedef unsigned short         type;};
template<>struct uintptr_candidates<2> {typedef unsigned long          type;};

#if defined(BOOST_HAS_LONG_LONG)
template<>struct uintptr_candidates<3> {typedef boost::ulong_long_type type;};
template<>struct uintptr_candidates<3> {typedef unsigned int           type;};

#if defined(BOOST_HAS_MS_INT64)
template<>struct uintptr_candidates<4> {typedef unsigned __int64       type;};
template<>struct uintptr_candidates<4> {typedef unsigned int           type;};

struct uintptr_aux


  typedef uintptr_candidates<index>::type type;

typedef mpl::bool_<uintptr_aux::has_uintptr_type> has_uintptr_type;
typedef uintptr_aux::type                         uintptr_type;

} /* namespace multi_index::detail */

} /* namespace multi_index */

} /* namespace boost */