154 lines
5.1 KiB
C++
154 lines
5.1 KiB
C++
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// (C) Copyright John Maddock 2007.
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (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/type_traits for most recent version including documentation.
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#ifndef BOOST_TT_MAKE_UNSIGNED_HPP_INCLUDED
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#define BOOST_TT_MAKE_UNSIGNED_HPP_INCLUDED
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#include <boost/mpl/if.hpp>
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#include <boost/type_traits/is_integral.hpp>
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#include <boost/type_traits/is_signed.hpp>
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#include <boost/type_traits/is_unsigned.hpp>
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#include <boost/type_traits/is_enum.hpp>
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#include <boost/type_traits/is_same.hpp>
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#include <boost/type_traits/remove_cv.hpp>
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#include <boost/type_traits/is_const.hpp>
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#include <boost/type_traits/is_volatile.hpp>
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#include <boost/type_traits/add_const.hpp>
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#include <boost/type_traits/add_volatile.hpp>
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#include <boost/type_traits/detail/ice_or.hpp>
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#include <boost/type_traits/detail/ice_and.hpp>
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#include <boost/type_traits/detail/ice_not.hpp>
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#include <boost/static_assert.hpp>
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// should be the last #include
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#include <boost/type_traits/detail/type_trait_def.hpp>
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namespace boost {
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namespace detail {
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template <class T>
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struct make_unsigned_imp
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{
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BOOST_STATIC_ASSERT(
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(::boost::type_traits::ice_or< ::boost::is_integral<T>::value, ::boost::is_enum<T>::value>::value));
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#if !BOOST_WORKAROUND(BOOST_MSVC, <=1300)
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BOOST_STATIC_ASSERT(
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(::boost::type_traits::ice_not< ::boost::is_same<
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typename remove_cv<T>::type, bool>::value>::value));
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#endif
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typedef typename remove_cv<T>::type t_no_cv;
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typedef typename mpl::if_c<
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(::boost::type_traits::ice_and<
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::boost::is_unsigned<T>::value,
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::boost::is_integral<T>::value,
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::boost::type_traits::ice_not< ::boost::is_same<t_no_cv, char>::value>::value,
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::boost::type_traits::ice_not< ::boost::is_same<t_no_cv, wchar_t>::value>::value,
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::boost::type_traits::ice_not< ::boost::is_same<t_no_cv, bool>::value>::value >::value),
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T,
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typename mpl::if_c<
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(::boost::type_traits::ice_and<
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::boost::is_integral<T>::value,
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::boost::type_traits::ice_not< ::boost::is_same<t_no_cv, char>::value>::value,
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::boost::type_traits::ice_not< ::boost::is_same<t_no_cv, wchar_t>::value>::value,
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::boost::type_traits::ice_not< ::boost::is_same<t_no_cv, bool>::value>::value>
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::value),
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typename mpl::if_<
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is_same<t_no_cv, signed char>,
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unsigned char,
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typename mpl::if_<
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is_same<t_no_cv, short>,
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unsigned short,
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typename mpl::if_<
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is_same<t_no_cv, int>,
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unsigned int,
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typename mpl::if_<
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is_same<t_no_cv, long>,
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unsigned long,
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#if defined(BOOST_HAS_LONG_LONG)
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#ifdef BOOST_HAS_INT128
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typename mpl::if_c<
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sizeof(t_no_cv) == sizeof(boost::ulong_long_type),
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boost::ulong_long_type,
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boost::uint128_type
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>::type
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#else
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boost::ulong_long_type
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#endif
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#elif defined(BOOST_HAS_MS_INT64)
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unsigned __int64
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#else
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unsigned long
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#endif
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>::type
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>::type
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>::type
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>::type,
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// Not a regular integer type:
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typename mpl::if_c<
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sizeof(t_no_cv) == sizeof(unsigned char),
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unsigned char,
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typename mpl::if_c<
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sizeof(t_no_cv) == sizeof(unsigned short),
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unsigned short,
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typename mpl::if_c<
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sizeof(t_no_cv) == sizeof(unsigned int),
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unsigned int,
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typename mpl::if_c<
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sizeof(t_no_cv) == sizeof(unsigned long),
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unsigned long,
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#if defined(BOOST_HAS_LONG_LONG)
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#ifdef BOOST_HAS_INT128
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typename mpl::if_c<
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sizeof(t_no_cv) == sizeof(boost::ulong_long_type),
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boost::ulong_long_type,
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boost::uint128_type
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>::type
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#else
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boost::ulong_long_type
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#endif
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#elif defined(BOOST_HAS_MS_INT64)
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unsigned __int64
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#else
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unsigned long
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#endif
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>::type
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>::type
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>::type
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>::type
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>::type
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>::type base_integer_type;
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// Add back any const qualifier:
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typedef typename mpl::if_<
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is_const<T>,
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typename add_const<base_integer_type>::type,
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base_integer_type
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>::type const_base_integer_type;
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// Add back any volatile qualifier:
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typedef typename mpl::if_<
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is_volatile<T>,
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typename add_volatile<const_base_integer_type>::type,
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const_base_integer_type
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>::type type;
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};
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} // namespace detail
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BOOST_TT_AUX_TYPE_TRAIT_DEF1(make_unsigned,T,typename boost::detail::make_unsigned_imp<T>::type)
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} // namespace boost
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#include <boost/type_traits/detail/type_trait_undef.hpp>
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#endif // BOOST_TT_ADD_REFERENCE_HPP_INCLUDED
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