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146 lines
6.0 KiB
146 lines
6.0 KiB
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// (C) Copyright John maddock 1999. |
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// (C) David Abrahams 2002. Distributed under the Boost |
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// Software License, Version 1.0. (See accompanying file |
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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// |
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// use this header as a workaround for missing <limits> |
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// See http://www.boost.org/libs/compatibility/index.html for documentation. |
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#ifndef BOOST_LIMITS |
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#define BOOST_LIMITS |
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#include <boost/config.hpp> |
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#ifdef BOOST_NO_LIMITS |
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# error "There is no std::numeric_limits suppport available." |
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#else |
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# include <limits> |
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#endif |
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#if (defined(BOOST_HAS_LONG_LONG) && defined(BOOST_NO_LONG_LONG_NUMERIC_LIMITS)) \ |
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|| (defined(BOOST_HAS_MS_INT64) && defined(BOOST_NO_MS_INT64_NUMERIC_LIMITS)) |
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// Add missing specializations for numeric_limits: |
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#ifdef BOOST_HAS_MS_INT64 |
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# define BOOST_LLT __int64 |
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# define BOOST_ULLT unsigned __int64 |
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#else |
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# define BOOST_LLT ::boost::long_long_type |
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# define BOOST_ULLT ::boost::ulong_long_type |
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#endif |
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#include <climits> // for CHAR_BIT |
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namespace std |
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{ |
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template<> |
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class numeric_limits<BOOST_LLT> |
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{ |
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public: |
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BOOST_STATIC_CONSTANT(bool, is_specialized = true); |
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#ifdef BOOST_HAS_MS_INT64 |
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static BOOST_LLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0x8000000000000000i64; } |
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static BOOST_LLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0x7FFFFFFFFFFFFFFFi64; } |
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#elif defined(LLONG_MAX) |
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static BOOST_LLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return LLONG_MIN; } |
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static BOOST_LLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return LLONG_MAX; } |
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#elif defined(LONGLONG_MAX) |
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static BOOST_LLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return LONGLONG_MIN; } |
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static BOOST_LLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return LONGLONG_MAX; } |
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#else |
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static BOOST_LLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 1LL << (sizeof(BOOST_LLT) * CHAR_BIT - 1); } |
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static BOOST_LLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ~(min)(); } |
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#endif |
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BOOST_STATIC_CONSTANT(int, digits = sizeof(BOOST_LLT) * CHAR_BIT -1); |
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BOOST_STATIC_CONSTANT(int, digits10 = (CHAR_BIT * sizeof (BOOST_LLT) - 1) * 301L / 1000); |
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BOOST_STATIC_CONSTANT(bool, is_signed = true); |
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BOOST_STATIC_CONSTANT(bool, is_integer = true); |
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BOOST_STATIC_CONSTANT(bool, is_exact = true); |
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BOOST_STATIC_CONSTANT(int, radix = 2); |
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static BOOST_LLT epsilon() throw() { return 0; }; |
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static BOOST_LLT round_error() throw() { return 0; }; |
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BOOST_STATIC_CONSTANT(int, min_exponent = 0); |
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BOOST_STATIC_CONSTANT(int, min_exponent10 = 0); |
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BOOST_STATIC_CONSTANT(int, max_exponent = 0); |
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BOOST_STATIC_CONSTANT(int, max_exponent10 = 0); |
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BOOST_STATIC_CONSTANT(bool, has_infinity = false); |
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BOOST_STATIC_CONSTANT(bool, has_quiet_NaN = false); |
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BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false); |
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BOOST_STATIC_CONSTANT(bool, has_denorm = false); |
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BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false); |
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static BOOST_LLT infinity() throw() { return 0; }; |
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static BOOST_LLT quiet_NaN() throw() { return 0; }; |
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static BOOST_LLT signaling_NaN() throw() { return 0; }; |
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static BOOST_LLT denorm_min() throw() { return 0; }; |
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BOOST_STATIC_CONSTANT(bool, is_iec559 = false); |
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BOOST_STATIC_CONSTANT(bool, is_bounded = true); |
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BOOST_STATIC_CONSTANT(bool, is_modulo = true); |
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BOOST_STATIC_CONSTANT(bool, traps = false); |
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BOOST_STATIC_CONSTANT(bool, tinyness_before = false); |
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BOOST_STATIC_CONSTANT(float_round_style, round_style = round_toward_zero); |
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}; |
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template<> |
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class numeric_limits<BOOST_ULLT> |
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{ |
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public: |
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BOOST_STATIC_CONSTANT(bool, is_specialized = true); |
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#ifdef BOOST_HAS_MS_INT64 |
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static BOOST_ULLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0ui64; } |
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static BOOST_ULLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0xFFFFFFFFFFFFFFFFui64; } |
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#elif defined(ULLONG_MAX) && defined(ULLONG_MIN) |
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static BOOST_ULLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ULLONG_MIN; } |
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static BOOST_ULLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ULLONG_MAX; } |
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#elif defined(ULONGLONG_MAX) && defined(ULONGLONG_MIN) |
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static BOOST_ULLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ULONGLONG_MIN; } |
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static BOOST_ULLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ULONGLONG_MAX; } |
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#else |
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static BOOST_ULLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0uLL; } |
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static BOOST_ULLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ~0uLL; } |
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#endif |
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BOOST_STATIC_CONSTANT(int, digits = sizeof(BOOST_LLT) * CHAR_BIT); |
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BOOST_STATIC_CONSTANT(int, digits10 = (CHAR_BIT * sizeof (BOOST_LLT)) * 301L / 1000); |
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BOOST_STATIC_CONSTANT(bool, is_signed = false); |
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BOOST_STATIC_CONSTANT(bool, is_integer = true); |
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BOOST_STATIC_CONSTANT(bool, is_exact = true); |
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BOOST_STATIC_CONSTANT(int, radix = 2); |
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static BOOST_ULLT epsilon() throw() { return 0; }; |
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static BOOST_ULLT round_error() throw() { return 0; }; |
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BOOST_STATIC_CONSTANT(int, min_exponent = 0); |
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BOOST_STATIC_CONSTANT(int, min_exponent10 = 0); |
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BOOST_STATIC_CONSTANT(int, max_exponent = 0); |
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BOOST_STATIC_CONSTANT(int, max_exponent10 = 0); |
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BOOST_STATIC_CONSTANT(bool, has_infinity = false); |
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BOOST_STATIC_CONSTANT(bool, has_quiet_NaN = false); |
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BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false); |
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BOOST_STATIC_CONSTANT(bool, has_denorm = false); |
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BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false); |
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static BOOST_ULLT infinity() throw() { return 0; }; |
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static BOOST_ULLT quiet_NaN() throw() { return 0; }; |
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static BOOST_ULLT signaling_NaN() throw() { return 0; }; |
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static BOOST_ULLT denorm_min() throw() { return 0; }; |
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BOOST_STATIC_CONSTANT(bool, is_iec559 = false); |
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BOOST_STATIC_CONSTANT(bool, is_bounded = true); |
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BOOST_STATIC_CONSTANT(bool, is_modulo = true); |
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BOOST_STATIC_CONSTANT(bool, traps = false); |
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BOOST_STATIC_CONSTANT(bool, tinyness_before = false); |
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BOOST_STATIC_CONSTANT(float_round_style, round_style = round_toward_zero); |
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}; |
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} |
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#endif |
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#endif |
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