mirror of
https://github.com/jart/cosmopolitan.git
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584 lines
27 KiB
C++
584 lines
27 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_LIMITS
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#define _LIBCPP_LIMITS
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/*
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limits synopsis
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namespace std
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{
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template<class T>
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class numeric_limits
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{
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public:
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static constexpr bool is_specialized = false;
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static constexpr T min() noexcept;
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static constexpr T max() noexcept;
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static constexpr T lowest() noexcept;
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static constexpr int digits = 0;
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static constexpr int digits10 = 0;
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static constexpr int max_digits10 = 0;
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static constexpr bool is_signed = false;
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static constexpr bool is_integer = false;
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static constexpr bool is_exact = false;
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static constexpr int radix = 0;
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static constexpr T epsilon() noexcept;
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static constexpr T round_error() noexcept;
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static constexpr int min_exponent = 0;
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static constexpr int min_exponent10 = 0;
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static constexpr int max_exponent = 0;
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static constexpr int max_exponent10 = 0;
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static constexpr bool has_infinity = false;
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static constexpr bool has_quiet_NaN = false;
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static constexpr bool has_signaling_NaN = false;
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static constexpr float_denorm_style has_denorm = denorm_absent; // deprecated in C++23
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static constexpr bool has_denorm_loss = false; // deprecated in C++23
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static constexpr T infinity() noexcept;
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static constexpr T quiet_NaN() noexcept;
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static constexpr T signaling_NaN() noexcept;
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static constexpr T denorm_min() noexcept;
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static constexpr bool is_iec559 = false;
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static constexpr bool is_bounded = false;
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static constexpr bool is_modulo = false;
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static constexpr bool traps = false;
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static constexpr bool tinyness_before = false;
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static constexpr float_round_style round_style = round_toward_zero;
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};
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enum float_round_style
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{
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round_indeterminate = -1,
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round_toward_zero = 0,
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round_to_nearest = 1,
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round_toward_infinity = 2,
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round_toward_neg_infinity = 3
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};
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enum float_denorm_style // deprecated in C++23
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{
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denorm_indeterminate = -1,
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denorm_absent = 0,
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denorm_present = 1
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};
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template<> class numeric_limits<cv bool>;
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template<> class numeric_limits<cv char>;
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template<> class numeric_limits<cv signed char>;
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template<> class numeric_limits<cv unsigned char>;
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template<> class numeric_limits<cv wchar_t>;
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template<> class numeric_limits<cv char8_t>; // C++20
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template<> class numeric_limits<cv char16_t>;
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template<> class numeric_limits<cv char32_t>;
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template<> class numeric_limits<cv short>;
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template<> class numeric_limits<cv int>;
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template<> class numeric_limits<cv long>;
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template<> class numeric_limits<cv long long>;
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template<> class numeric_limits<cv unsigned short>;
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template<> class numeric_limits<cv unsigned int>;
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template<> class numeric_limits<cv unsigned long>;
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template<> class numeric_limits<cv unsigned long long>;
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template<> class numeric_limits<cv float>;
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template<> class numeric_limits<cv double>;
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template<> class numeric_limits<cv long double>;
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} // std
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*/
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#include <__config>
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#include <__type_traits/is_arithmetic.h>
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#include <__type_traits/is_signed.h>
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#include <__type_traits/remove_cv.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_PUSH_MACROS
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#include <__undef_macros>
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#include <version>
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_LIBCPP_BEGIN_NAMESPACE_STD
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enum float_round_style {
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round_indeterminate = -1,
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round_toward_zero = 0,
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round_to_nearest = 1,
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round_toward_infinity = 2,
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round_toward_neg_infinity = 3
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};
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enum _LIBCPP_DEPRECATED_IN_CXX23 float_denorm_style {
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denorm_indeterminate = -1,
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denorm_absent = 0,
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denorm_present = 1
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};
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template <class _Tp, bool = is_arithmetic<_Tp>::value>
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class __libcpp_numeric_limits {
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protected:
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typedef _Tp type;
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static _LIBCPP_CONSTEXPR const bool is_specialized = false;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type min() _NOEXCEPT { return type(); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type max() _NOEXCEPT { return type(); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type lowest() _NOEXCEPT { return type(); }
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static _LIBCPP_CONSTEXPR const int digits = 0;
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static _LIBCPP_CONSTEXPR const int digits10 = 0;
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static _LIBCPP_CONSTEXPR const int max_digits10 = 0;
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static _LIBCPP_CONSTEXPR const bool is_signed = false;
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static _LIBCPP_CONSTEXPR const bool is_integer = false;
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static _LIBCPP_CONSTEXPR const bool is_exact = false;
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static _LIBCPP_CONSTEXPR const int radix = 0;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type epsilon() _NOEXCEPT { return type(); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type round_error() _NOEXCEPT { return type(); }
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static _LIBCPP_CONSTEXPR const int min_exponent = 0;
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static _LIBCPP_CONSTEXPR const int min_exponent10 = 0;
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static _LIBCPP_CONSTEXPR const int max_exponent = 0;
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static _LIBCPP_CONSTEXPR const int max_exponent10 = 0;
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static _LIBCPP_CONSTEXPR const bool has_infinity = false;
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static _LIBCPP_CONSTEXPR const bool has_quiet_NaN = false;
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static _LIBCPP_CONSTEXPR const bool has_signaling_NaN = false;
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static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const float_denorm_style has_denorm = denorm_absent;
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static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const bool has_denorm_loss = false;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type infinity() _NOEXCEPT { return type(); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type quiet_NaN() _NOEXCEPT { return type(); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type signaling_NaN() _NOEXCEPT { return type(); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type denorm_min() _NOEXCEPT { return type(); }
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static _LIBCPP_CONSTEXPR const bool is_iec559 = false;
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static _LIBCPP_CONSTEXPR const bool is_bounded = false;
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static _LIBCPP_CONSTEXPR const bool is_modulo = false;
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static _LIBCPP_CONSTEXPR const bool traps = false;
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static _LIBCPP_CONSTEXPR const bool tinyness_before = false;
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static _LIBCPP_CONSTEXPR const float_round_style round_style = round_toward_zero;
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};
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template <class _Tp, int __digits, bool _IsSigned>
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struct __libcpp_compute_min {
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static _LIBCPP_CONSTEXPR const _Tp value = _Tp(_Tp(1) << __digits);
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};
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template <class _Tp, int __digits>
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struct __libcpp_compute_min<_Tp, __digits, false> {
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static _LIBCPP_CONSTEXPR const _Tp value = _Tp(0);
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};
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template <class _Tp>
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class __libcpp_numeric_limits<_Tp, true> {
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protected:
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typedef _Tp type;
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static _LIBCPP_CONSTEXPR const bool is_specialized = true;
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static _LIBCPP_CONSTEXPR const bool is_signed = type(-1) < type(0);
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static _LIBCPP_CONSTEXPR const int digits = static_cast<int>(sizeof(type) * __CHAR_BIT__ - is_signed);
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static _LIBCPP_CONSTEXPR const int digits10 = digits * 3 / 10;
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static _LIBCPP_CONSTEXPR const int max_digits10 = 0;
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static _LIBCPP_CONSTEXPR const type __min = __libcpp_compute_min<type, digits, is_signed>::value;
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static _LIBCPP_CONSTEXPR const type __max = is_signed ? type(type(~0) ^ __min) : type(~0);
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type min() _NOEXCEPT { return __min; }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type max() _NOEXCEPT { return __max; }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type lowest() _NOEXCEPT { return min(); }
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static _LIBCPP_CONSTEXPR const bool is_integer = true;
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static _LIBCPP_CONSTEXPR const bool is_exact = true;
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static _LIBCPP_CONSTEXPR const int radix = 2;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type epsilon() _NOEXCEPT { return type(0); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type round_error() _NOEXCEPT { return type(0); }
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static _LIBCPP_CONSTEXPR const int min_exponent = 0;
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static _LIBCPP_CONSTEXPR const int min_exponent10 = 0;
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static _LIBCPP_CONSTEXPR const int max_exponent = 0;
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static _LIBCPP_CONSTEXPR const int max_exponent10 = 0;
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static _LIBCPP_CONSTEXPR const bool has_infinity = false;
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static _LIBCPP_CONSTEXPR const bool has_quiet_NaN = false;
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static _LIBCPP_CONSTEXPR const bool has_signaling_NaN = false;
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static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const float_denorm_style has_denorm = denorm_absent;
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static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const bool has_denorm_loss = false;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type infinity() _NOEXCEPT { return type(0); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type quiet_NaN() _NOEXCEPT { return type(0); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type signaling_NaN() _NOEXCEPT { return type(0); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type denorm_min() _NOEXCEPT { return type(0); }
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static _LIBCPP_CONSTEXPR const bool is_iec559 = false;
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static _LIBCPP_CONSTEXPR const bool is_bounded = true;
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static _LIBCPP_CONSTEXPR const bool is_modulo = !std::is_signed<_Tp>::value;
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#if defined(__i386__) || defined(__x86_64__) || defined(__pnacl__) || defined(__wasm__)
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static _LIBCPP_CONSTEXPR const bool traps = true;
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#else
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static _LIBCPP_CONSTEXPR const bool traps = false;
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#endif
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static _LIBCPP_CONSTEXPR const bool tinyness_before = false;
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static _LIBCPP_CONSTEXPR const float_round_style round_style = round_toward_zero;
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};
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template <>
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class __libcpp_numeric_limits<bool, true> {
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protected:
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typedef bool type;
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static _LIBCPP_CONSTEXPR const bool is_specialized = true;
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static _LIBCPP_CONSTEXPR const bool is_signed = false;
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static _LIBCPP_CONSTEXPR const int digits = 1;
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static _LIBCPP_CONSTEXPR const int digits10 = 0;
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static _LIBCPP_CONSTEXPR const int max_digits10 = 0;
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static _LIBCPP_CONSTEXPR const type __min = false;
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static _LIBCPP_CONSTEXPR const type __max = true;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type min() _NOEXCEPT { return __min; }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type max() _NOEXCEPT { return __max; }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type lowest() _NOEXCEPT { return min(); }
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static _LIBCPP_CONSTEXPR const bool is_integer = true;
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static _LIBCPP_CONSTEXPR const bool is_exact = true;
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static _LIBCPP_CONSTEXPR const int radix = 2;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type epsilon() _NOEXCEPT { return type(0); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type round_error() _NOEXCEPT { return type(0); }
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static _LIBCPP_CONSTEXPR const int min_exponent = 0;
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static _LIBCPP_CONSTEXPR const int min_exponent10 = 0;
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static _LIBCPP_CONSTEXPR const int max_exponent = 0;
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static _LIBCPP_CONSTEXPR const int max_exponent10 = 0;
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static _LIBCPP_CONSTEXPR const bool has_infinity = false;
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static _LIBCPP_CONSTEXPR const bool has_quiet_NaN = false;
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static _LIBCPP_CONSTEXPR const bool has_signaling_NaN = false;
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static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const float_denorm_style has_denorm = denorm_absent;
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static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const bool has_denorm_loss = false;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type infinity() _NOEXCEPT { return type(0); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type quiet_NaN() _NOEXCEPT { return type(0); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type signaling_NaN() _NOEXCEPT { return type(0); }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type denorm_min() _NOEXCEPT { return type(0); }
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static _LIBCPP_CONSTEXPR const bool is_iec559 = false;
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static _LIBCPP_CONSTEXPR const bool is_bounded = true;
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static _LIBCPP_CONSTEXPR const bool is_modulo = false;
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static _LIBCPP_CONSTEXPR const bool traps = false;
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static _LIBCPP_CONSTEXPR const bool tinyness_before = false;
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static _LIBCPP_CONSTEXPR const float_round_style round_style = round_toward_zero;
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};
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template <>
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class __libcpp_numeric_limits<float, true> {
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protected:
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typedef float type;
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static _LIBCPP_CONSTEXPR const bool is_specialized = true;
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static _LIBCPP_CONSTEXPR const bool is_signed = true;
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static _LIBCPP_CONSTEXPR const int digits = __FLT_MANT_DIG__;
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static _LIBCPP_CONSTEXPR const int digits10 = __FLT_DIG__;
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static _LIBCPP_CONSTEXPR const int max_digits10 = 2 + (digits * 30103l) / 100000l;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type min() _NOEXCEPT { return __FLT_MIN__; }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type max() _NOEXCEPT { return __FLT_MAX__; }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type lowest() _NOEXCEPT { return -max(); }
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static _LIBCPP_CONSTEXPR const bool is_integer = false;
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static _LIBCPP_CONSTEXPR const bool is_exact = false;
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static _LIBCPP_CONSTEXPR const int radix = __FLT_RADIX__;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type epsilon() _NOEXCEPT { return __FLT_EPSILON__; }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type round_error() _NOEXCEPT { return 0.5F; }
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static _LIBCPP_CONSTEXPR const int min_exponent = __FLT_MIN_EXP__;
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static _LIBCPP_CONSTEXPR const int min_exponent10 = __FLT_MIN_10_EXP__;
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static _LIBCPP_CONSTEXPR const int max_exponent = __FLT_MAX_EXP__;
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static _LIBCPP_CONSTEXPR const int max_exponent10 = __FLT_MAX_10_EXP__;
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static _LIBCPP_CONSTEXPR const bool has_infinity = true;
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static _LIBCPP_CONSTEXPR const bool has_quiet_NaN = true;
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static _LIBCPP_CONSTEXPR const bool has_signaling_NaN = true;
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static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const float_denorm_style has_denorm = denorm_present;
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static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const bool has_denorm_loss = false;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type infinity() _NOEXCEPT {
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return __builtin_huge_valf();
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}
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type quiet_NaN() _NOEXCEPT {
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return __builtin_nanf("");
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}
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type signaling_NaN() _NOEXCEPT {
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return __builtin_nansf("");
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}
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type denorm_min() _NOEXCEPT {
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return __FLT_DENORM_MIN__;
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}
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static _LIBCPP_CONSTEXPR const bool is_iec559 = true;
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static _LIBCPP_CONSTEXPR const bool is_bounded = true;
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static _LIBCPP_CONSTEXPR const bool is_modulo = false;
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static _LIBCPP_CONSTEXPR const bool traps = false;
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#if (defined(__arm__) || defined(__aarch64__))
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static _LIBCPP_CONSTEXPR const bool tinyness_before = true;
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#else
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static _LIBCPP_CONSTEXPR const bool tinyness_before = false;
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#endif
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static _LIBCPP_CONSTEXPR const float_round_style round_style = round_to_nearest;
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};
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template <>
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class __libcpp_numeric_limits<double, true> {
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protected:
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typedef double type;
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static _LIBCPP_CONSTEXPR const bool is_specialized = true;
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static _LIBCPP_CONSTEXPR const bool is_signed = true;
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static _LIBCPP_CONSTEXPR const int digits = __DBL_MANT_DIG__;
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static _LIBCPP_CONSTEXPR const int digits10 = __DBL_DIG__;
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static _LIBCPP_CONSTEXPR const int max_digits10 = 2 + (digits * 30103l) / 100000l;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type min() _NOEXCEPT { return __DBL_MIN__; }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type max() _NOEXCEPT { return __DBL_MAX__; }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type lowest() _NOEXCEPT { return -max(); }
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static _LIBCPP_CONSTEXPR const bool is_integer = false;
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static _LIBCPP_CONSTEXPR const bool is_exact = false;
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static _LIBCPP_CONSTEXPR const int radix = __FLT_RADIX__;
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type epsilon() _NOEXCEPT { return __DBL_EPSILON__; }
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_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type round_error() _NOEXCEPT { return 0.5; }
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static _LIBCPP_CONSTEXPR const int min_exponent = __DBL_MIN_EXP__;
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static _LIBCPP_CONSTEXPR const int min_exponent10 = __DBL_MIN_10_EXP__;
|
|
static _LIBCPP_CONSTEXPR const int max_exponent = __DBL_MAX_EXP__;
|
|
static _LIBCPP_CONSTEXPR const int max_exponent10 = __DBL_MAX_10_EXP__;
|
|
|
|
static _LIBCPP_CONSTEXPR const bool has_infinity = true;
|
|
static _LIBCPP_CONSTEXPR const bool has_quiet_NaN = true;
|
|
static _LIBCPP_CONSTEXPR const bool has_signaling_NaN = true;
|
|
static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const float_denorm_style has_denorm = denorm_present;
|
|
static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const bool has_denorm_loss = false;
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type infinity() _NOEXCEPT {
|
|
return __builtin_huge_val();
|
|
}
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type quiet_NaN() _NOEXCEPT {
|
|
return __builtin_nan("");
|
|
}
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type signaling_NaN() _NOEXCEPT {
|
|
return __builtin_nans("");
|
|
}
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type denorm_min() _NOEXCEPT {
|
|
return __DBL_DENORM_MIN__;
|
|
}
|
|
|
|
static _LIBCPP_CONSTEXPR const bool is_iec559 = true;
|
|
static _LIBCPP_CONSTEXPR const bool is_bounded = true;
|
|
static _LIBCPP_CONSTEXPR const bool is_modulo = false;
|
|
|
|
static _LIBCPP_CONSTEXPR const bool traps = false;
|
|
#if (defined(__arm__) || defined(__aarch64__))
|
|
static _LIBCPP_CONSTEXPR const bool tinyness_before = true;
|
|
#else
|
|
static _LIBCPP_CONSTEXPR const bool tinyness_before = false;
|
|
#endif
|
|
static _LIBCPP_CONSTEXPR const float_round_style round_style = round_to_nearest;
|
|
};
|
|
|
|
template <>
|
|
class __libcpp_numeric_limits<long double, true> {
|
|
protected:
|
|
typedef long double type;
|
|
|
|
static _LIBCPP_CONSTEXPR const bool is_specialized = true;
|
|
|
|
static _LIBCPP_CONSTEXPR const bool is_signed = true;
|
|
static _LIBCPP_CONSTEXPR const int digits = __LDBL_MANT_DIG__;
|
|
static _LIBCPP_CONSTEXPR const int digits10 = __LDBL_DIG__;
|
|
static _LIBCPP_CONSTEXPR const int max_digits10 = 2 + (digits * 30103l) / 100000l;
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type min() _NOEXCEPT { return __LDBL_MIN__; }
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type max() _NOEXCEPT { return __LDBL_MAX__; }
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type lowest() _NOEXCEPT { return -max(); }
|
|
|
|
static _LIBCPP_CONSTEXPR const bool is_integer = false;
|
|
static _LIBCPP_CONSTEXPR const bool is_exact = false;
|
|
static _LIBCPP_CONSTEXPR const int radix = __FLT_RADIX__;
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type epsilon() _NOEXCEPT { return __LDBL_EPSILON__; }
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type round_error() _NOEXCEPT { return 0.5L; }
|
|
|
|
static _LIBCPP_CONSTEXPR const int min_exponent = __LDBL_MIN_EXP__;
|
|
static _LIBCPP_CONSTEXPR const int min_exponent10 = __LDBL_MIN_10_EXP__;
|
|
static _LIBCPP_CONSTEXPR const int max_exponent = __LDBL_MAX_EXP__;
|
|
static _LIBCPP_CONSTEXPR const int max_exponent10 = __LDBL_MAX_10_EXP__;
|
|
|
|
static _LIBCPP_CONSTEXPR const bool has_infinity = true;
|
|
static _LIBCPP_CONSTEXPR const bool has_quiet_NaN = true;
|
|
static _LIBCPP_CONSTEXPR const bool has_signaling_NaN = true;
|
|
static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const float_denorm_style has_denorm = denorm_present;
|
|
static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const bool has_denorm_loss = false;
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type infinity() _NOEXCEPT {
|
|
return __builtin_huge_vall();
|
|
}
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type quiet_NaN() _NOEXCEPT {
|
|
return __builtin_nanl("");
|
|
}
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type signaling_NaN() _NOEXCEPT {
|
|
return __builtin_nansl("");
|
|
}
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type denorm_min() _NOEXCEPT {
|
|
return __LDBL_DENORM_MIN__;
|
|
}
|
|
|
|
#if defined(__powerpc__) && defined(__LONG_DOUBLE_IBM128__)
|
|
static _LIBCPP_CONSTEXPR const bool is_iec559 = false;
|
|
#else
|
|
static _LIBCPP_CONSTEXPR const bool is_iec559 = true;
|
|
#endif
|
|
static _LIBCPP_CONSTEXPR const bool is_bounded = true;
|
|
static _LIBCPP_CONSTEXPR const bool is_modulo = false;
|
|
|
|
static _LIBCPP_CONSTEXPR const bool traps = false;
|
|
#if (defined(__arm__) || defined(__aarch64__))
|
|
static _LIBCPP_CONSTEXPR const bool tinyness_before = true;
|
|
#else
|
|
static _LIBCPP_CONSTEXPR const bool tinyness_before = false;
|
|
#endif
|
|
static _LIBCPP_CONSTEXPR const float_round_style round_style = round_to_nearest;
|
|
};
|
|
|
|
template <class _Tp>
|
|
class _LIBCPP_TEMPLATE_VIS numeric_limits : private __libcpp_numeric_limits<_Tp> {
|
|
typedef __libcpp_numeric_limits<_Tp> __base;
|
|
typedef typename __base::type type;
|
|
|
|
public:
|
|
static _LIBCPP_CONSTEXPR const bool is_specialized = __base::is_specialized;
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type min() _NOEXCEPT { return __base::min(); }
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type max() _NOEXCEPT { return __base::max(); }
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type lowest() _NOEXCEPT { return __base::lowest(); }
|
|
|
|
static _LIBCPP_CONSTEXPR const int digits = __base::digits;
|
|
static _LIBCPP_CONSTEXPR const int digits10 = __base::digits10;
|
|
static _LIBCPP_CONSTEXPR const int max_digits10 = __base::max_digits10;
|
|
static _LIBCPP_CONSTEXPR const bool is_signed = __base::is_signed;
|
|
static _LIBCPP_CONSTEXPR const bool is_integer = __base::is_integer;
|
|
static _LIBCPP_CONSTEXPR const bool is_exact = __base::is_exact;
|
|
static _LIBCPP_CONSTEXPR const int radix = __base::radix;
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type epsilon() _NOEXCEPT {
|
|
return __base::epsilon();
|
|
}
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type round_error() _NOEXCEPT {
|
|
return __base::round_error();
|
|
}
|
|
|
|
static _LIBCPP_CONSTEXPR const int min_exponent = __base::min_exponent;
|
|
static _LIBCPP_CONSTEXPR const int min_exponent10 = __base::min_exponent10;
|
|
static _LIBCPP_CONSTEXPR const int max_exponent = __base::max_exponent;
|
|
static _LIBCPP_CONSTEXPR const int max_exponent10 = __base::max_exponent10;
|
|
|
|
static _LIBCPP_CONSTEXPR const bool has_infinity = __base::has_infinity;
|
|
static _LIBCPP_CONSTEXPR const bool has_quiet_NaN = __base::has_quiet_NaN;
|
|
static _LIBCPP_CONSTEXPR const bool has_signaling_NaN = __base::has_signaling_NaN;
|
|
_LIBCPP_SUPPRESS_DEPRECATED_PUSH
|
|
static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const float_denorm_style has_denorm = __base::has_denorm;
|
|
static _LIBCPP_DEPRECATED_IN_CXX23 _LIBCPP_CONSTEXPR const bool has_denorm_loss = __base::has_denorm_loss;
|
|
_LIBCPP_SUPPRESS_DEPRECATED_POP
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type infinity() _NOEXCEPT {
|
|
return __base::infinity();
|
|
}
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type quiet_NaN() _NOEXCEPT {
|
|
return __base::quiet_NaN();
|
|
}
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type signaling_NaN() _NOEXCEPT {
|
|
return __base::signaling_NaN();
|
|
}
|
|
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR type denorm_min() _NOEXCEPT {
|
|
return __base::denorm_min();
|
|
}
|
|
|
|
static _LIBCPP_CONSTEXPR const bool is_iec559 = __base::is_iec559;
|
|
static _LIBCPP_CONSTEXPR const bool is_bounded = __base::is_bounded;
|
|
static _LIBCPP_CONSTEXPR const bool is_modulo = __base::is_modulo;
|
|
|
|
static _LIBCPP_CONSTEXPR const bool traps = __base::traps;
|
|
static _LIBCPP_CONSTEXPR const bool tinyness_before = __base::tinyness_before;
|
|
static _LIBCPP_CONSTEXPR const float_round_style round_style = __base::round_style;
|
|
};
|
|
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::is_specialized;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const int numeric_limits<_Tp>::digits;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const int numeric_limits<_Tp>::digits10;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const int numeric_limits<_Tp>::max_digits10;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::is_signed;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::is_integer;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::is_exact;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const int numeric_limits<_Tp>::radix;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const int numeric_limits<_Tp>::min_exponent;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const int numeric_limits<_Tp>::min_exponent10;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const int numeric_limits<_Tp>::max_exponent;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const int numeric_limits<_Tp>::max_exponent10;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::has_infinity;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::has_quiet_NaN;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::has_signaling_NaN;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const float_denorm_style numeric_limits<_Tp>::has_denorm;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::has_denorm_loss;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::is_iec559;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::is_bounded;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::is_modulo;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::traps;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const bool numeric_limits<_Tp>::tinyness_before;
|
|
template <class _Tp>
|
|
_LIBCPP_CONSTEXPR const float_round_style numeric_limits<_Tp>::round_style;
|
|
|
|
template <class _Tp>
|
|
class _LIBCPP_TEMPLATE_VIS numeric_limits<const _Tp> : public numeric_limits<_Tp> {};
|
|
|
|
template <class _Tp>
|
|
class _LIBCPP_TEMPLATE_VIS numeric_limits<volatile _Tp> : public numeric_limits<_Tp> {};
|
|
|
|
template <class _Tp>
|
|
class _LIBCPP_TEMPLATE_VIS numeric_limits<const volatile _Tp> : public numeric_limits<_Tp> {};
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
_LIBCPP_POP_MACROS
|
|
|
|
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
|
|
# include <type_traits>
|
|
#endif
|
|
|
|
#endif // _LIBCPP_LIMITS
|