[3408] | 1 | |
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| 2 | // (C) Copyright John Maddock 2005. |
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| 3 | // Use, modification and distribution are subject to the Boost Software License, |
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| 4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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| 5 | // http://www.boost.org/LICENSE_1_0.txt). |
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| 6 | // |
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| 7 | // See http://www.boost.org/libs/type_traits for most recent version including documentation. |
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| 8 | |
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| 9 | |
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| 10 | #ifndef BOOST_TT_IS_UNSIGNED_HPP_INCLUDED |
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| 11 | #define BOOST_TT_IS_UNSIGNED_HPP_INCLUDED |
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| 12 | |
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| 13 | #include <boost/type_traits/is_integral.hpp> |
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| 14 | #include <boost/type_traits/is_enum.hpp> |
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| 15 | #include <boost/type_traits/remove_cv.hpp> |
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| 16 | #include <boost/type_traits/detail/ice_or.hpp> |
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| 17 | |
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| 18 | // should be the last #include |
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| 19 | #include <boost/type_traits/detail/bool_trait_def.hpp> |
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| 20 | |
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| 21 | namespace boost { |
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| 22 | |
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| 23 | #if !defined( __CODEGEARC__ ) |
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| 24 | |
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| 25 | namespace detail{ |
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| 26 | |
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| 27 | #if !(defined(__EDG_VERSION__) && __EDG_VERSION__ <= 238) |
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| 28 | |
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| 29 | template <class T> |
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| 30 | struct is_unsigned_values |
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| 31 | { |
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| 32 | typedef typename remove_cv<T>::type no_cv_t; |
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| 33 | BOOST_STATIC_CONSTANT(no_cv_t, minus_one = (static_cast<no_cv_t>(-1))); |
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| 34 | BOOST_STATIC_CONSTANT(no_cv_t, zero = (static_cast<no_cv_t>(0))); |
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| 35 | }; |
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| 36 | |
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| 37 | template <class T> |
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| 38 | struct is_ununsigned_helper |
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| 39 | { |
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| 40 | BOOST_STATIC_CONSTANT(bool, value = (::boost::detail::is_unsigned_values<T>::minus_one > ::boost::detail::is_unsigned_values<T>::zero)); |
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| 41 | }; |
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| 42 | |
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| 43 | template <bool integral_type> |
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| 44 | struct is_ununsigned_select_helper |
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| 45 | { |
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| 46 | template <class T> |
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| 47 | struct rebind |
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| 48 | { |
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| 49 | typedef is_ununsigned_helper<T> type; |
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| 50 | }; |
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| 51 | }; |
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| 52 | |
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| 53 | template <> |
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| 54 | struct is_ununsigned_select_helper<false> |
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| 55 | { |
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| 56 | template <class T> |
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| 57 | struct rebind |
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| 58 | { |
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| 59 | typedef false_type type; |
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| 60 | }; |
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| 61 | }; |
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| 62 | |
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| 63 | template <class T> |
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| 64 | struct is_unsigned_imp |
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| 65 | { |
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| 66 | typedef is_ununsigned_select_helper< |
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| 67 | ::boost::type_traits::ice_or< |
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| 68 | ::boost::is_integral<T>::value, |
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| 69 | ::boost::is_enum<T>::value>::value |
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| 70 | > selector; |
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| 71 | typedef typename selector::template rebind<T> binder; |
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| 72 | typedef typename binder::type type; |
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| 73 | BOOST_STATIC_CONSTANT(bool, value = type::value); |
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| 74 | }; |
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| 75 | |
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| 76 | #else |
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| 77 | |
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| 78 | template <class T> struct is_unsigned_imp : public false_type{}; |
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| 79 | template <> struct is_unsigned_imp<unsigned char> : public true_type{}; |
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| 80 | template <> struct is_unsigned_imp<const unsigned char> : public true_type{}; |
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| 81 | template <> struct is_unsigned_imp<volatile unsigned char> : public true_type{}; |
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| 82 | template <> struct is_unsigned_imp<const volatile unsigned char> : public true_type{}; |
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| 83 | template <> struct is_unsigned_imp<unsigned short> : public true_type{}; |
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| 84 | template <> struct is_unsigned_imp<const unsigned short> : public true_type{}; |
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| 85 | template <> struct is_unsigned_imp<volatile unsigned short> : public true_type{}; |
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| 86 | template <> struct is_unsigned_imp<const volatile unsigned short> : public true_type{}; |
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| 87 | template <> struct is_unsigned_imp<unsigned int> : public true_type{}; |
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| 88 | template <> struct is_unsigned_imp<const unsigned int> : public true_type{}; |
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| 89 | template <> struct is_unsigned_imp<volatile unsigned int> : public true_type{}; |
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| 90 | template <> struct is_unsigned_imp<const volatile unsigned int> : public true_type{}; |
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| 91 | template <> struct is_unsigned_imp<unsigned long> : public true_type{}; |
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| 92 | template <> struct is_unsigned_imp<const unsigned long> : public true_type{}; |
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| 93 | template <> struct is_unsigned_imp<volatile unsigned long> : public true_type{}; |
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| 94 | template <> struct is_unsigned_imp<const volatile unsigned long> : public true_type{}; |
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| 95 | #ifdef BOOST_HAS_LONG_LONG |
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| 96 | template <> struct is_unsigned_imp<unsigned long long> : public true_type{}; |
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| 97 | template <> struct is_unsigned_imp<const unsigned long long> : public true_type{}; |
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| 98 | template <> struct is_unsigned_imp<volatile unsigned long long> : public true_type{}; |
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| 99 | template <> struct is_unsigned_imp<const volatile unsigned long long> : public true_type{}; |
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| 100 | #endif |
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| 101 | #if defined(CHAR_MIN) && (CHAR_MIN == 0) |
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| 102 | template <> struct is_unsigned_imp<char> : public true_type{}; |
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| 103 | template <> struct is_unsigned_imp<const char> : public true_type{}; |
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| 104 | template <> struct is_unsigned_imp<volatile char> : public true_type{}; |
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| 105 | template <> struct is_unsigned_imp<const volatile char> : public true_type{}; |
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| 106 | #endif |
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| 107 | #if defined(WCHAR_MIN) && (WCHAR_MIN == 0) |
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| 108 | template <> struct is_unsigned_imp<wchar_t> : public true_type{}; |
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| 109 | template <> struct is_unsigned_imp<const wchar_t> : public true_type{}; |
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| 110 | template <> struct is_unsigned_imp<volatile wchar_t> : public true_type{}; |
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| 111 | template <> struct is_unsigned_imp<const volatile wchar_t> : public true_type{}; |
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| 112 | #endif |
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| 113 | |
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| 114 | #endif |
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| 115 | |
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| 116 | } |
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| 117 | |
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| 118 | #endif // !defined( __CODEGEARC__ ) |
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| 119 | |
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| 120 | #if defined( __CODEGEARC__ ) |
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| 121 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_unsigned,T,__is_unsigned(T)) |
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| 122 | #else |
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| 123 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_unsigned,T,::boost::detail::is_unsigned_imp<T>::value) |
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| 124 | #endif |
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| 125 | |
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| 126 | } // namespace boost |
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| 127 | |
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| 128 | #include <boost/type_traits/detail/bool_trait_undef.hpp> |
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| 129 | |
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| 130 | #endif // BOOST_TT_IS_MEMBER_FUNCTION_POINTER_HPP_INCLUDED |
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