| /*************************************************************************** |
| * |
| * This is an internal header file used to implement the C++ Standard |
| * Library. It should never be #included directly by a program. |
| * |
| * $Id$ |
| * |
| *************************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed |
| * with this work for additional information regarding copyright |
| * ownership. The ASF licenses this file to you under the Apache |
| * License, Version 2.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| * |
| * Copyright 2008 Rogue Wave Software, Inc. |
| * |
| **************************************************************************/ |
| |
| #ifndef _RWSTD_RW_META_SIGN_H_INCLUDED |
| #define _RWSTD_RW_META_SIGN_H_INCLUDED |
| |
| #include <rw/_defs.h> |
| #include <rw/_meta_other.h> |
| #include <rw/_meta_rel.h> |
| #include <rw/_meta_cv.h> |
| #include <rw/_static_assert.h> |
| |
| _RWSTD_NAMESPACE (__rw) { |
| |
| // Provides typedefs mapping non-boolean integral types to signed |
| // and unsigned integral types of the same base type. |
| template <class _TypeT> |
| struct __rw_sign_helper |
| { |
| typedef void _C_Sint; |
| typedef void _C_Uint; |
| }; |
| |
| template <> |
| struct __rw_sign_helper<char> |
| { |
| #if (_RWSTD_CHAR_MIN < 0) |
| typedef char _C_Sint; |
| typedef unsigned char _C_Uint; |
| #else |
| typedef signed char _C_Sint; |
| typedef char _C_Uint; |
| #endif |
| }; |
| |
| #ifndef _RWSTD_NO_NATIVE_WCHAR_T |
| |
| template <> |
| struct __rw_sign_helper<wchar_t> |
| { |
| #if (_RWSTD_WCHAR_MIN < 0) |
| typedef wchar_t _C_Sint; |
| |
| # if (_RWSTD_WCHAR_SIZE == _RWSTD_CHAR_SIZE) |
| typedef unsigned char _C_Uint; |
| # elif (_RWSTD_WCHAR_SIZE == _RWSTD_SHRT_SIZE) |
| typedef unsigned short _C_Uint; |
| # elif (_RWSTD_WCHAR_SIZE == _RWSTD_INT_SIZE) |
| typedef unsigned int _C_Uint; |
| # elif (_RWSTD_WCHAR_SIZE == _RWSTD_LONG_SIZE) |
| typedef unsigned long _C_Uint; |
| # elif (_RWSTD_WCHAR_SIZE == _RWSTD_LLONG_SIZE) |
| typedef unsigned long long _C_Uint; |
| # endif |
| |
| # else // 0 <= _RWSTD_WCHAR_MIN |
| |
| # if (_RWSTD_WCHAR_SIZE == _RWSTD_CHAR_SIZE) |
| typedef signed char _C_Sint; |
| # elif (_RWSTD_WCHAR_SIZE == _RWSTD_SHRT_SIZE) |
| typedef signed short _C_Sint; |
| # elif (_RWSTD_WCHAR_SIZE == _RWSTD_INT_SIZE) |
| typedef signed int _C_Sint; |
| # elif (_RWSTD_WCHAR_SIZE == _RWSTD_LONG_SIZE) |
| typedef signed long _C_Sint; |
| # elif (_RWSTD_WCHAR_SIZE == _RWSTD_LLONG_SIZE) |
| typedef signed long long _C_Sint; |
| # endif |
| |
| typedef wchar_t _C_Uint; |
| # endif // 0 <= _RWSTD_WCHAR_MIN |
| }; |
| |
| #endif // _RWSTD_NO_NATIVE_WCHAR_T |
| |
| template <> |
| struct __rw_sign_helper<signed char> |
| { |
| typedef signed char _C_Sint; |
| typedef unsigned char _C_Uint; |
| }; |
| |
| template <> |
| struct __rw_sign_helper<unsigned char> |
| { |
| typedef signed char _C_Sint; |
| typedef unsigned char _C_Uint; |
| }; |
| |
| template <> |
| struct __rw_sign_helper<signed short> |
| { |
| typedef signed short _C_Sint; |
| typedef unsigned short _C_Uint; |
| }; |
| |
| template <> |
| struct __rw_sign_helper<unsigned short> |
| { |
| typedef signed short _C_Sint; |
| typedef unsigned short _C_Uint; |
| }; |
| |
| template <> |
| struct __rw_sign_helper<signed int> |
| { |
| typedef signed int _C_Sint; |
| typedef unsigned int _C_Uint; |
| }; |
| |
| template <> |
| struct __rw_sign_helper<unsigned int> |
| { |
| typedef signed int _C_Sint; |
| typedef unsigned int _C_Uint; |
| }; |
| |
| template <> |
| struct __rw_sign_helper<signed long> |
| { |
| typedef signed long _C_Sint; |
| typedef unsigned long _C_Uint; |
| }; |
| |
| template <> |
| struct __rw_sign_helper<unsigned long> |
| { |
| typedef signed long _C_Sint; |
| typedef unsigned long _C_Uint; |
| }; |
| |
| |
| #ifndef _RWSTD_NO_LONG_LONG |
| |
| template <> |
| struct __rw_sign_helper<signed long long> |
| { |
| typedef signed long long _C_Sint; |
| typedef unsigned long long _C_Uint; |
| }; |
| |
| template <> |
| struct __rw_sign_helper<unsigned long long> |
| { |
| typedef signed long long _C_Sint; |
| typedef unsigned long long _C_Uint; |
| }; |
| |
| #endif // !_RWSTD_NO_LONG_LONG |
| |
| |
| // Class template provides typedefs mapping enumeration types |
| // to integral types of the same size. |
| template <_RWSTD_SIZE_T _Size> |
| struct __rw_enum_helper |
| { |
| typedef void _C_Sint; |
| typedef void _C_Uint; |
| }; |
| |
| template <> |
| struct __rw_enum_helper<_RWSTD_CHAR_SIZE> |
| { |
| typedef signed char _C_Sint; |
| typedef unsigned char _C_Uint; |
| }; |
| |
| template <> |
| struct __rw_enum_helper<_RWSTD_SHRT_SIZE> |
| { |
| typedef signed short _C_Sint; |
| typedef unsigned short _C_Uint; |
| }; |
| |
| template <> |
| struct __rw_enum_helper<_RWSTD_INT_SIZE> |
| { |
| typedef signed int _C_Sint; |
| typedef unsigned int _C_Uint; |
| }; |
| |
| #if (_RWSTD_INT_SIZE != _RWSTD_LONG_SIZE) |
| |
| template <> |
| struct __rw_enum_helper<_RWSTD_LONG_SIZE> |
| { |
| typedef signed long _C_Sint; |
| typedef unsigned long _C_Uint; |
| }; |
| |
| #endif // (_RWSTD_INT_SIZE != _RWSTD_LONG_SIZE) |
| |
| #ifndef _RWSTD_NO_LONG_LONG |
| # if (_RWSTD_LONG_SIZE != _RWSTD_LLONG_SIZE) |
| |
| template <> |
| struct __rw_enum_helper<_RWSTD_LLONG_SIZE> |
| { |
| typedef signed long long _C_Sint; |
| typedef unsigned long long _C_Uint; |
| }; |
| |
| # endif // _RWSTD_LONG_SIZE != _RWSTD_LLONG_SIZE |
| #endif // !_RWSTD_NO_LONG_LONG |
| |
| template <class _TypeT> |
| struct __rw_make_signed |
| { |
| private: |
| //_RWSTD_STATIC_ASSERT ( __rw_is_integral<_TypeT>::value |
| // || __rw_is_enum<_TypeT>::value); |
| |
| typedef typename __rw_remove_cv<_TypeT>::type _NoCV_TypeT; |
| |
| //_RWSTD_STATIC_ASSERT (!__rw_is_same<_NoCV_TypeT, bool>::value); |
| |
| typedef typename |
| __rw_conditional<__rw_is_integral<_NoCV_TypeT>::value, |
| typename __rw_sign_helper<_NoCV_TypeT>::_C_Sint, |
| typename __rw_enum_helper< sizeof (_TypeT) >::_C_Sint |
| >::type _NoCV_TypeU; |
| |
| typedef typename |
| __rw_conditional<__rw_is_const<_TypeT>::value, |
| typename __rw_add_const<_NoCV_TypeU>::type, |
| _NoCV_TypeU>::type _NoV_TypeU; |
| |
| typedef typename |
| __rw_conditional<__rw_is_volatile<_TypeT>::value, |
| typename __rw_add_volatile<_NoV_TypeU>::type, |
| _NoV_TypeU>::type _TypeU; |
| |
| public: |
| typedef _TypeU type; |
| }; |
| |
| #define _RWSTD_MAKE_SIGNED(T) _RW::__rw_make_signed<T>::type |
| |
| template <class _TypeT> |
| struct __rw_make_unsigned |
| { |
| private: |
| //_RWSTD_STATIC_ASSERT ( __rw_is_integral<_TypeT>::value |
| // || __rw_is_enum<_TypeT>::value); |
| |
| typedef typename __rw_remove_cv<_TypeT>::type _NoCV_TypeT; |
| |
| //_RWSTD_STATIC_ASSERT (!__rw_is_same<_NoCV_TypeT, bool>::value); |
| |
| typedef typename |
| __rw_conditional<__rw_is_integral<_NoCV_TypeT>::value, |
| typename __rw_sign_helper<_NoCV_TypeT>::_C_Uint, |
| typename __rw_enum_helper< sizeof (_TypeT) >::_C_Uint |
| >::type _NoCV_TypeU; |
| |
| typedef typename |
| __rw_conditional<__rw_is_const<_TypeT>::value, |
| typename __rw_add_const<_NoCV_TypeU>::type, |
| _NoCV_TypeU>::type _NoV_TypeU; |
| |
| typedef typename |
| __rw_conditional<__rw_is_volatile<_TypeT>::value, |
| typename __rw_add_volatile<_NoV_TypeU>::type, |
| _NoV_TypeU>::type _TypeU; |
| |
| public: |
| typedef _TypeU type; |
| }; |
| |
| #define _RWSTD_MAKE_UNSIGNED(T) _RW::__rw_make_unsigned<T>::type |
| |
| } // namespace __rw |
| |
| |
| #endif // _RWSTD_RW_META_SIGN_H_INCLUDED |
| |