Chris@16: 
Chris@16: #ifndef BOOST_MPL_AUX_LARGEST_INT_HPP_INCLUDED
Chris@16: #define BOOST_MPL_AUX_LARGEST_INT_HPP_INCLUDED
Chris@16: 
Chris@16: // Copyright Aleksey Gurtovoy 2000-2004
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. 
Chris@16: // (See accompanying file LICENSE_1_0.txt or copy at 
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org/libs/mpl for documentation.
Chris@16: 
Chris@101: // $Id$
Chris@101: // $Date$
Chris@101: // $Revision$
Chris@16: 
Chris@16: #include <boost/mpl/if.hpp>
Chris@16: #include <boost/mpl/int.hpp>
Chris@16: #include <boost/mpl/aux_/config/integral.hpp>
Chris@16: #include <boost/config.hpp>
Chris@16: 
Chris@16: namespace boost { namespace mpl { namespace aux {
Chris@16: 
Chris@16: template< typename T > struct integral_rank;
Chris@16: 
Chris@16: template<> struct integral_rank<bool>           : int_<1> {};
Chris@16: template<> struct integral_rank<signed char>    : int_<2> {};
Chris@16: template<> struct integral_rank<char>           : int_<3> {};
Chris@16: template<> struct integral_rank<unsigned char>  : int_<4> {};
Chris@16: #if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
Chris@16: template<> struct integral_rank<wchar_t>        : int_<5> {};
Chris@16: #endif
Chris@16: template<> struct integral_rank<short>          : int_<6> {};
Chris@16: template<> struct integral_rank<unsigned short> : int_<7> {};
Chris@16: template<> struct integral_rank<int>            : int_<8> {};
Chris@16: template<> struct integral_rank<unsigned int>   : int_<9> {};
Chris@16: template<> struct integral_rank<long>           : int_<10> {};
Chris@16: template<> struct integral_rank<unsigned long>  : int_<11> {};
Chris@16: 
Chris@16: #if defined(BOOST_HAS_LONG_LONG)
Chris@16: template<> struct integral_rank<long_long_type> : int_<12> {};
Chris@16: template<> struct integral_rank<ulong_long_type>: int_<13> {};
Chris@16: #endif
Chris@16: 
Chris@16: template< typename T1, typename T2 > struct largest_int
Chris@16: #if !defined(BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC)
Chris@16:     : if_c< 
Chris@16:           ( integral_rank<T1>::value >= integral_rank<T2>::value )
Chris@16:         , T1
Chris@16:         , T2
Chris@16:         >
Chris@16: {
Chris@16: #else
Chris@16: {
Chris@16:     enum { rank1 = integral_rank<T1>::value };
Chris@16:     enum { rank2 = integral_rank<T2>::value };
Chris@16:     typedef typename if_c< (rank1 >= rank2),T1,T2 >::type type;
Chris@16: #endif
Chris@16: };
Chris@16: 
Chris@16: }}}
Chris@16: 
Chris@16: #endif // BOOST_MPL_AUX_LARGEST_INT_HPP_INCLUDED