boost/limits.hpp
// (C) Copyright John maddock 1999. // (C) David Abrahams 2002. 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) // // use this header as a workaround for missing <limits> // See http://www.boost.org/libs/compatibility/index.html for documentation. #ifndef BOOST_LIMITS #define BOOST_LIMITS #include <boost/config.hpp> #ifdef BOOST_NO_LIMITS # error "There is no std::numeric_limits suppport available." #else # include <limits> #endif #if (defined(BOOST_HAS_LONG_LONG) && defined(BOOST_NO_LONG_LONG_NUMERIC_LIMITS)) \ || (defined(BOOST_HAS_MS_INT64) && defined(BOOST_NO_MS_INT64_NUMERIC_LIMITS)) // Add missing specializations for numeric_limits: #ifdef BOOST_HAS_MS_INT64 # define BOOST_LLT __int64 # define BOOST_ULLT unsigned __int64 #else # define BOOST_LLT ::boost::long_long_type # define BOOST_ULLT ::boost::ulong_long_type #endif #include <climits> // for CHAR_BIT namespace std { template<> class numeric_limits<BOOST_LLT> { public: BOOST_STATIC_CONSTANT(bool, is_specialized = true); #ifdef BOOST_HAS_MS_INT64 static BOOST_LLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0x8000000000000000i64; } static BOOST_LLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0x7FFFFFFFFFFFFFFFi64; } #elif defined(LLONG_MAX) static BOOST_LLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return LLONG_MIN; } static BOOST_LLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return LLONG_MAX; } #elif defined(LONGLONG_MAX) static BOOST_LLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return LONGLONG_MIN; } static BOOST_LLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return LONGLONG_MAX; } #else static BOOST_LLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 1LL << (sizeof(BOOST_LLT) * CHAR_BIT - 1); } static BOOST_LLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ~(min)(); } #endif BOOST_STATIC_CONSTANT(int, digits = sizeof(BOOST_LLT) * CHAR_BIT -1); BOOST_STATIC_CONSTANT(int, digits10 = (CHAR_BIT * sizeof (BOOST_LLT) - 1) * 301L / 1000); BOOST_STATIC_CONSTANT(bool, is_signed = true); BOOST_STATIC_CONSTANT(bool, is_integer = true); BOOST_STATIC_CONSTANT(bool, is_exact = true); BOOST_STATIC_CONSTANT(int, radix = 2); static BOOST_LLT epsilon() BOOST_NOEXCEPT_OR_NOTHROW { return 0; }; static BOOST_LLT round_error() BOOST_NOEXCEPT_OR_NOTHROW { return 0; }; BOOST_STATIC_CONSTANT(int, min_exponent = 0); BOOST_STATIC_CONSTANT(int, min_exponent10 = 0); BOOST_STATIC_CONSTANT(int, max_exponent = 0); BOOST_STATIC_CONSTANT(int, max_exponent10 = 0); BOOST_STATIC_CONSTANT(bool, has_infinity = false); BOOST_STATIC_CONSTANT(bool, has_quiet_NaN = false); BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false); BOOST_STATIC_CONSTANT(bool, has_denorm = false); BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false); static BOOST_LLT infinity() BOOST_NOEXCEPT_OR_NOTHROW { return 0; }; static BOOST_LLT quiet_NaN() BOOST_NOEXCEPT_OR_NOTHROW { return 0; }; static BOOST_LLT signaling_NaN() BOOST_NOEXCEPT_OR_NOTHROW { return 0; }; static BOOST_LLT denorm_min() BOOST_NOEXCEPT_OR_NOTHROW { return 0; }; BOOST_STATIC_CONSTANT(bool, is_iec559 = false); BOOST_STATIC_CONSTANT(bool, is_bounded = true); BOOST_STATIC_CONSTANT(bool, is_modulo = true); BOOST_STATIC_CONSTANT(bool, traps = false); BOOST_STATIC_CONSTANT(bool, tinyness_before = false); BOOST_STATIC_CONSTANT(float_round_style, round_style = round_toward_zero); }; template<> class numeric_limits<BOOST_ULLT> { public: BOOST_STATIC_CONSTANT(bool, is_specialized = true); #ifdef BOOST_HAS_MS_INT64 static BOOST_ULLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0ui64; } static BOOST_ULLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0xFFFFFFFFFFFFFFFFui64; } #elif defined(ULLONG_MAX) && defined(ULLONG_MIN) static BOOST_ULLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ULLONG_MIN; } static BOOST_ULLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ULLONG_MAX; } #elif defined(ULONGLONG_MAX) && defined(ULONGLONG_MIN) static BOOST_ULLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ULONGLONG_MIN; } static BOOST_ULLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ULONGLONG_MAX; } #else static BOOST_ULLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0uLL; } static BOOST_ULLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ~0uLL; } #endif BOOST_STATIC_CONSTANT(int, digits = sizeof(BOOST_LLT) * CHAR_BIT); BOOST_STATIC_CONSTANT(int, digits10 = (CHAR_BIT * sizeof (BOOST_LLT)) * 301L / 1000); BOOST_STATIC_CONSTANT(bool, is_signed = false); BOOST_STATIC_CONSTANT(bool, is_integer = true); BOOST_STATIC_CONSTANT(bool, is_exact = true); BOOST_STATIC_CONSTANT(int, radix = 2); static BOOST_ULLT epsilon() BOOST_NOEXCEPT_OR_NOTHROW { return 0; }; static BOOST_ULLT round_error() BOOST_NOEXCEPT_OR_NOTHROW { return 0; }; BOOST_STATIC_CONSTANT(int, min_exponent = 0); BOOST_STATIC_CONSTANT(int, min_exponent10 = 0); BOOST_STATIC_CONSTANT(int, max_exponent = 0); BOOST_STATIC_CONSTANT(int, max_exponent10 = 0); BOOST_STATIC_CONSTANT(bool, has_infinity = false); BOOST_STATIC_CONSTANT(bool, has_quiet_NaN = false); BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false); BOOST_STATIC_CONSTANT(bool, has_denorm = false); BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false); static BOOST_ULLT infinity() BOOST_NOEXCEPT_OR_NOTHROW { return 0; }; static BOOST_ULLT quiet_NaN() BOOST_NOEXCEPT_OR_NOTHROW { return 0; }; static BOOST_ULLT signaling_NaN() BOOST_NOEXCEPT_OR_NOTHROW { return 0; }; static BOOST_ULLT denorm_min() BOOST_NOEXCEPT_OR_NOTHROW { return 0; }; BOOST_STATIC_CONSTANT(bool, is_iec559 = false); BOOST_STATIC_CONSTANT(bool, is_bounded = true); BOOST_STATIC_CONSTANT(bool, is_modulo = true); BOOST_STATIC_CONSTANT(bool, traps = false); BOOST_STATIC_CONSTANT(bool, tinyness_before = false); BOOST_STATIC_CONSTANT(float_round_style, round_style = round_toward_zero); }; } #endif #endif