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
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#ifndef BOOST_MPL_AUX_LARGEST_INT_HPP_INCLUDED
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#define BOOST_MPL_AUX_LARGEST_INT_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2000-2004
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//
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// Distributed under the Boost Software License, Version 1.0. 
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// (See accompanying file LICENSE_1_0.txt or copy at 
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/mpl for documentation.
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// $Source: /cvsroot/boost/boost/boost/mpl/aux_/largest_int.hpp,v $
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// $Date: 2004/09/19 03:08:53 $
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// $Revision: 1.5 $
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#include <boost/mpl/if.hpp>
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#include <boost/mpl/int.hpp>
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#include <boost/mpl/aux_/config/integral.hpp>
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#include <boost/config.hpp>
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namespace boost { namespace mpl { namespace aux {
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template< typename T > struct integral_rank;
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template<> struct integral_rank<bool>           : int_<1> {};
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template<> struct integral_rank<signed char>    : int_<2> {};
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template<> struct integral_rank<char>           : int_<3> {};
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template<> struct integral_rank<unsigned char>  : int_<4> {};
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#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
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template<> struct integral_rank<wchar_t>        : int_<5> {};
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#endif
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template<> struct integral_rank<short>          : int_<6> {};
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template<> struct integral_rank<unsigned short> : int_<7> {};
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template<> struct integral_rank<int>            : int_<8> {};
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template<> struct integral_rank<unsigned int>   : int_<9> {};
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template<> struct integral_rank<long>           : int_<10> {};
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template<> struct integral_rank<unsigned long>  : int_<11> {};
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#if defined(BOOST_HAS_LONG_LONG)
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template<> struct integral_rank<long_long_type> : int_<12> {};
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template<> struct integral_rank<ulong_long_type>: int_<13> {};
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#endif
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template< typename T1, typename T2 > struct largest_int
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#if !defined(BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC)
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    : if_c< 
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          ( integral_rank<T1>::value >= integral_rank<T2>::value )
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        , T1
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        , T2
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        >
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{
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#else
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{
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    enum { rank1 = integral_rank<T1>::value };
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    enum { rank2 = integral_rank<T2>::value };
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    typedef typename if_c< (rank1 >= rank2),T1,T2 >::type type;
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#endif
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};
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}}}
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#endif // BOOST_MPL_AUX_LARGEST_INT_HPP_INCLUDED