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/Src/Dependencies/Boost/boost/mpl/aux_/largest_int.hpp

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C++ Header | 63 lines | 42 code | 11 blank | 10 comment | 0 complexity | 609372eeec22659557e59f420e5d988a MD5 | raw file
 1
 2#ifndef BOOST_MPL_AUX_LARGEST_INT_HPP_INCLUDED
 3#define BOOST_MPL_AUX_LARGEST_INT_HPP_INCLUDED
 4
 5// Copyright Aleksey Gurtovoy 2000-2004
 6//
 7// Distributed under the Boost Software License, Version 1.0. 
 8// (See accompanying file LICENSE_1_0.txt or copy at 
 9// http://www.boost.org/LICENSE_1_0.txt)
10//
11// See http://www.boost.org/libs/mpl for documentation.
12
13// $Id: largest_int.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
14// $Date: 2008-10-11 17:19:02 +1100 (Sat, 11 Oct 2008) $
15// $Revision: 49267 $
16
17#include <boost/mpl/if.hpp>
18#include <boost/mpl/int.hpp>
19#include <boost/mpl/aux_/config/integral.hpp>
20#include <boost/config.hpp>
21
22namespace boost { namespace mpl { namespace aux {
23
24template< typename T > struct integral_rank;
25
26template<> struct integral_rank<bool>           : int_<1> {};
27template<> struct integral_rank<signed char>    : int_<2> {};
28template<> struct integral_rank<char>           : int_<3> {};
29template<> struct integral_rank<unsigned char>  : int_<4> {};
30#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
31template<> struct integral_rank<wchar_t>        : int_<5> {};
32#endif
33template<> struct integral_rank<short>          : int_<6> {};
34template<> struct integral_rank<unsigned short> : int_<7> {};
35template<> struct integral_rank<int>            : int_<8> {};
36template<> struct integral_rank<unsigned int>   : int_<9> {};
37template<> struct integral_rank<long>           : int_<10> {};
38template<> struct integral_rank<unsigned long>  : int_<11> {};
39
40#if defined(BOOST_HAS_LONG_LONG)
41template<> struct integral_rank<long_long_type> : int_<12> {};
42template<> struct integral_rank<ulong_long_type>: int_<13> {};
43#endif
44
45template< typename T1, typename T2 > struct largest_int
46#if !defined(BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC)
47    : if_c< 
48          ( integral_rank<T1>::value >= integral_rank<T2>::value )
49        , T1
50        , T2
51        >
52{
53#else
54{
55    enum { rank1 = integral_rank<T1>::value };
56    enum { rank2 = integral_rank<T2>::value };
57    typedef typename if_c< (rank1 >= rank2),T1,T2 >::type type;
58#endif
59};
60
61}}}
62
63#endif // BOOST_MPL_AUX_LARGEST_INT_HPP_INCLUDED