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authorStefan Radomski <github@mintwerk.de>2016-05-12 13:12:33 (GMT)
committerStefan Radomski <github@mintwerk.de>2016-05-12 13:12:33 (GMT)
commitb62e7979600feee23dc7cdb61042a8fc7673122b (patch)
treef7351372f37979dd2d048e0b68a16a4cd3b2aadb /contrib/src/boost/type_traits/make_unsigned.hpp
parent1b11b310be61e51b3ac5ebb83f7c8a33aef3d6e8 (diff)
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Major Refactoring v2.0
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-rw-r--r--contrib/src/boost/type_traits/make_unsigned.hpp130
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diff --git a/contrib/src/boost/type_traits/make_unsigned.hpp b/contrib/src/boost/type_traits/make_unsigned.hpp
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+
+// (C) Copyright John Maddock 2007.
+// Use, modification and distribution are subject to the Boost Software License,
+// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt).
+//
+// See http://www.boost.org/libs/type_traits for most recent version including documentation.
+
+#ifndef BOOST_TT_MAKE_UNSIGNED_HPP_INCLUDED
+#define BOOST_TT_MAKE_UNSIGNED_HPP_INCLUDED
+
+#include <boost/type_traits/conditional.hpp>
+#include <boost/type_traits/is_integral.hpp>
+#include <boost/type_traits/is_signed.hpp>
+#include <boost/type_traits/is_unsigned.hpp>
+#include <boost/type_traits/is_enum.hpp>
+#include <boost/type_traits/is_same.hpp>
+#include <boost/type_traits/remove_cv.hpp>
+#include <boost/type_traits/is_const.hpp>
+#include <boost/type_traits/is_volatile.hpp>
+#include <boost/type_traits/add_const.hpp>
+#include <boost/type_traits/add_volatile.hpp>
+#include <boost/static_assert.hpp>
+
+namespace boost {
+
+template <class T>
+struct make_unsigned
+{
+private:
+ BOOST_STATIC_ASSERT_MSG((::boost::is_integral<T>::value || ::boost::is_enum<T>::value), "The template argument to make_unsigned must be an integer or enum type.");
+ BOOST_STATIC_ASSERT_MSG((! ::boost::is_same<typename remove_cv<T>::type, bool>::value), "The template argument to make_unsigned must not be the type bool");
+
+ typedef typename remove_cv<T>::type t_no_cv;
+ typedef typename conditional<
+ (::boost::is_unsigned<T>::value && ::boost::is_integral<T>::value
+ && ! ::boost::is_same<t_no_cv, char>::value
+ && ! ::boost::is_same<t_no_cv, wchar_t>::value
+ && ! ::boost::is_same<t_no_cv, bool>::value),
+ T,
+ typename conditional<
+ (::boost::is_integral<T>::value
+ && ! ::boost::is_same<t_no_cv, char>::value
+ && ! ::boost::is_same<t_no_cv, wchar_t>::value
+ && ! ::boost::is_same<t_no_cv, bool>::value),
+ typename conditional<
+ is_same<t_no_cv, signed char>::value,
+ unsigned char,
+ typename conditional<
+ is_same<t_no_cv, short>::value,
+ unsigned short,
+ typename conditional<
+ is_same<t_no_cv, int>::value,
+ unsigned int,
+ typename conditional<
+ is_same<t_no_cv, long>::value,
+ unsigned long,
+#if defined(BOOST_HAS_LONG_LONG)
+#ifdef BOOST_HAS_INT128
+ typename conditional<
+ sizeof(t_no_cv) == sizeof(boost::ulong_long_type),
+ boost::ulong_long_type,
+ boost::uint128_type
+ >::type
+#else
+ boost::ulong_long_type
+#endif
+#elif defined(BOOST_HAS_MS_INT64)
+ unsigned __int64
+#else
+ unsigned long
+#endif
+ >::type
+ >::type
+ >::type
+ >::type,
+ // Not a regular integer type:
+ typename conditional<
+ sizeof(t_no_cv) == sizeof(unsigned char),
+ unsigned char,
+ typename conditional<
+ sizeof(t_no_cv) == sizeof(unsigned short),
+ unsigned short,
+ typename conditional<
+ sizeof(t_no_cv) == sizeof(unsigned int),
+ unsigned int,
+ typename conditional<
+ sizeof(t_no_cv) == sizeof(unsigned long),
+ unsigned long,
+#if defined(BOOST_HAS_LONG_LONG)
+#ifdef BOOST_HAS_INT128
+ typename conditional<
+ sizeof(t_no_cv) == sizeof(boost::ulong_long_type),
+ boost::ulong_long_type,
+ boost::uint128_type
+ >::type
+#else
+ boost::ulong_long_type
+#endif
+#elif defined(BOOST_HAS_MS_INT64)
+ unsigned __int64
+#else
+ unsigned long
+#endif
+ >::type
+ >::type
+ >::type
+ >::type
+ >::type
+ >::type base_integer_type;
+
+ // Add back any const qualifier:
+ typedef typename conditional<
+ is_const<T>::value,
+ typename add_const<base_integer_type>::type,
+ base_integer_type
+ >::type const_base_integer_type;
+public:
+ // Add back any volatile qualifier:
+ typedef typename conditional<
+ is_volatile<T>::value,
+ typename add_volatile<const_base_integer_type>::type,
+ const_base_integer_type
+ >::type type;
+};
+
+} // namespace boost
+
+#endif // BOOST_TT_ADD_REFERENCE_HPP_INCLUDED
+