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63 lines
2.0 KiB
63 lines
2.0 KiB
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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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// $Id: largest_int.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
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// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
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// $Revision: 49267 $ |
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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
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