/* boost integer_traits.hpp header file * * Copyright Jens Maurer 2000 * Distributed under 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) * * $Id: integer_traits.hpp,v 1.27.2.1 2005/08/24 15:45:17 johnmaddock Exp $ * * Idea by Beman Dawes, Ed Brey, Steve Cleary, and Nathan Myers */ // See http://www.boost.org/libs/integer for documentation. #ifndef BOOST_INTEGER_TRAITS_HPP #define BOOST_INTEGER_TRAITS_HPP #include #include // These are an implementation detail and not part of the interface #include // we need wchar.h for WCHAR_MAX/MIN but not all platforms provide it, // and some may have but not ... #if !defined(BOOST_NO_INTRINSIC_WCHAR_T) && (!defined(BOOST_NO_CWCHAR) || defined(sun) || defined(__sun)) #include #endif namespace boost { template class integer_traits : public std::numeric_limits { public: BOOST_STATIC_CONSTANT(bool, is_integral = false); }; namespace detail { template class integer_traits_base { public: BOOST_STATIC_CONSTANT(bool, is_integral = true); BOOST_STATIC_CONSTANT(T, const_min = min_val); BOOST_STATIC_CONSTANT(T, const_max = max_val); }; #ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION // A definition is required even for integral static constants template const bool integer_traits_base::is_integral; template const T integer_traits_base::const_min; template const T integer_traits_base::const_max; #endif } // namespace detail template<> class integer_traits : public std::numeric_limits, public detail::integer_traits_base { }; template<> class integer_traits : public std::numeric_limits, public detail::integer_traits_base { }; template<> class integer_traits : public std::numeric_limits, public detail::integer_traits_base { }; template<> class integer_traits : public std::numeric_limits, public detail::integer_traits_base { }; #ifndef BOOST_NO_INTRINSIC_WCHAR_T template<> class integer_traits : public std::numeric_limits, // Don't trust WCHAR_MIN and WCHAR_MAX with Mac OS X's native // library: they are wrong! #if defined(WCHAR_MIN) && defined(WCHAR_MAX) && !defined(__APPLE__) public detail::integer_traits_base #elif defined(__BORLANDC__) || defined(__CYGWIN__) || defined(__MINGW32__) || (defined(__BEOS__) && defined(__GNUC__)) // No WCHAR_MIN and WCHAR_MAX, whar_t is short and unsigned: public detail::integer_traits_base #elif (defined(__sgi) && (!defined(__SGI_STL_PORT) || __SGI_STL_PORT < 0x400))\ || (defined __APPLE__)\ || (defined(__OpenBSD__) && defined(__GNUC__))\ || (defined(__NetBSD__) && defined(__GNUC__))\ || (defined(__FreeBSD__) && defined(__GNUC__))\ || (defined(__DragonFly__) && defined(__GNUC__))\ || (defined(__hpux) && defined(__GNUC__) && (__GNUC__ == 3) && !defined(__SGI_STL_PORT)) // No WCHAR_MIN and WCHAR_MAX, wchar_t has the same range as int. // - SGI MIPSpro with native library // - gcc 3.x on HP-UX // - Mac OS X with native library // - gcc on FreeBSD, OpenBSD and NetBSD public detail::integer_traits_base #elif defined(__hpux) && defined(__GNUC__) && (__GNUC__ == 2) && !defined(__SGI_STL_PORT) // No WCHAR_MIN and WCHAR_MAX, wchar_t has the same range as unsigned int. // - gcc 2.95.x on HP-UX // (also, std::numeric_limits appears to return the wrong values). public detail::integer_traits_base #else #error No WCHAR_MIN and WCHAR_MAX present, please adjust integer_traits<> for your compiler. #endif { }; #endif // BOOST_NO_INTRINSIC_WCHAR_T template<> class integer_traits : public std::numeric_limits, public detail::integer_traits_base { }; template<> class integer_traits : public std::numeric_limits, public detail::integer_traits_base { }; template<> class integer_traits : public std::numeric_limits, public detail::integer_traits_base { }; template<> class integer_traits : public std::numeric_limits, public detail::integer_traits_base { }; template<> class integer_traits : public std::numeric_limits, public detail::integer_traits_base { }; template<> class integer_traits : public std::numeric_limits, public detail::integer_traits_base { }; #if !defined(BOOST_NO_INTEGRAL_INT64_T) && !defined(BOOST_NO_INT64_T) #if defined(ULLONG_MAX) && defined(BOOST_HAS_LONG_LONG) template<> class integer_traits< ::boost::long_long_type> : public std::numeric_limits< ::boost::long_long_type>, public detail::integer_traits_base< ::boost::long_long_type, LLONG_MIN, LLONG_MAX> { }; template<> class integer_traits< ::boost::ulong_long_type> : public std::numeric_limits< ::boost::ulong_long_type>, public detail::integer_traits_base< ::boost::ulong_long_type, 0, ULLONG_MAX> { }; #elif defined(ULONG_LONG_MAX) && defined(BOOST_HAS_LONG_LONG) template<> class integer_traits< ::boost::long_long_type> : public std::numeric_limits< ::boost::long_long_type>, public detail::integer_traits_base< ::boost::long_long_type, LONG_LONG_MIN, LONG_LONG_MAX>{ }; template<> class integer_traits< ::boost::ulong_long_type> : public std::numeric_limits< ::boost::ulong_long_type>, public detail::integer_traits_base< ::boost::ulong_long_type, 0, ULONG_LONG_MAX> { }; #elif defined(ULONGLONG_MAX) && defined(BOOST_HAS_LONG_LONG) template<> class integer_traits< ::boost::long_long_type> : public std::numeric_limits< ::boost::long_long_type>, public detail::integer_traits_base< ::boost::long_long_type, LONGLONG_MIN, LONGLONG_MAX> { }; template<> class integer_traits< ::boost::ulong_long_type> : public std::numeric_limits< ::boost::ulong_long_type>, public detail::integer_traits_base< ::boost::ulong_long_type, 0, ULONGLONG_MAX> { }; #elif defined(_LLONG_MAX) && defined(_C2) && defined(BOOST_HAS_LONG_LONG) template<> class integer_traits< ::boost::long_long_type> : public std::numeric_limits< ::boost::long_long_type>, public detail::integer_traits_base< ::boost::long_long_type, -_LLONG_MAX - _C2, _LLONG_MAX> { }; template<> class integer_traits< ::boost::ulong_long_type> : public std::numeric_limits< ::boost::ulong_long_type>, public detail::integer_traits_base< ::boost::ulong_long_type, 0, _ULLONG_MAX> { }; #elif defined(BOOST_HAS_LONG_LONG) // // we have long long but no constants, this happens for example with gcc in -ansi mode, // we'll just have to work out the values for ourselves (assumes 2's compliment representation): // template<> class integer_traits< ::boost::long_long_type> : public std::numeric_limits< ::boost::long_long_type>, public detail::integer_traits_base< ::boost::long_long_type, (1LL << (sizeof(::boost::long_long_type) - 1)), ~(1LL << (sizeof(::boost::long_long_type) - 1))> { }; template<> class integer_traits< ::boost::ulong_long_type> : public std::numeric_limits< ::boost::ulong_long_type>, public detail::integer_traits_base< ::boost::ulong_long_type, 0, ~0uLL> { }; #endif #endif } // namespace boost #endif /* BOOST_INTEGER_TRAITS_HPP */