epoc32/include/stdapis/boost/mpl/aux_/largest_int.hpp
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:27:01 +0100
branchSymbian2
changeset 3 e1b950c65cb4
permissions -rw-r--r--
Attempt to represent the S^2->S^3 header reorganisation as a series of "hg rename" operations
     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 // $Source: /cvsroot/boost/boost/boost/mpl/aux_/largest_int.hpp,v $
    14 // $Date: 2004/09/19 03:08:53 $
    15 // $Revision: 1.5 $
    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 
    22 namespace boost { namespace mpl { namespace aux {
    23 
    24 template< typename T > struct integral_rank;
    25 
    26 template<> struct integral_rank<bool>           : int_<1> {};
    27 template<> struct integral_rank<signed char>    : int_<2> {};
    28 template<> struct integral_rank<char>           : int_<3> {};
    29 template<> struct integral_rank<unsigned char>  : int_<4> {};
    30 #if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
    31 template<> struct integral_rank<wchar_t>        : int_<5> {};
    32 #endif
    33 template<> struct integral_rank<short>          : int_<6> {};
    34 template<> struct integral_rank<unsigned short> : int_<7> {};
    35 template<> struct integral_rank<int>            : int_<8> {};
    36 template<> struct integral_rank<unsigned int>   : int_<9> {};
    37 template<> struct integral_rank<long>           : int_<10> {};
    38 template<> struct integral_rank<unsigned long>  : int_<11> {};
    39 
    40 #if defined(BOOST_HAS_LONG_LONG)
    41 template<> struct integral_rank<long_long_type> : int_<12> {};
    42 template<> struct integral_rank<ulong_long_type>: int_<13> {};
    43 #endif
    44 
    45 template< 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