std::__numeric_limits_base(3) Library Functions Manual NAME std::__numeric_limits_base - Part of std::numeric_limits. SYNOPSIS #include Inherited by std::numeric_limits< bool >, std::numeric_limits< char >, std::numeric_limits< char16_t >, std::numeric_limits< char32_t >, std::numeric_limits< const _Tp >, std::numeric_limits< const volatile _Tp >, std::numeric_limits< double >, std::numeric_limits< float >, std::numeric_limits< int >, std::numeric_limits< long >, std::numeric_limits< long double >, std::numeric_limits< long long >, std::numeric_limits< short >, std::numeric_limits< signed char >, std::numeric_limits< unsigned char >, std::numeric_limits< unsigned int >, std::numeric_limits< unsigned long >, std::numeric_limits< unsigned long long >, std::numeric_limits< unsigned short >, std::numeric_limits< volatile _Tp >, std::numeric_limits< wchar_t >, and std::numeric_limits< _Tp >. Static Public Attributes static constexpr int digits static constexpr int digits10 static constexpr float_denorm_style has_denorm static constexpr bool has_denorm_loss static constexpr bool has_infinity static constexpr bool has_quiet_NaN static constexpr bool has_signaling_NaN static constexpr bool is_bounded static constexpr bool is_exact static constexpr bool is_iec559 static constexpr bool is_integer static constexpr bool is_modulo static constexpr bool is_signed static constexpr bool is_specialized static constexpr int max_digits10 static constexpr int max_exponent static constexpr int max_exponent10 static constexpr int min_exponent static constexpr int min_exponent10 static constexpr int radix static constexpr float_round_style round_style static constexpr bool tinyness_before static constexpr bool traps Detailed Description Part of std::numeric_limits. The static const members are usable as integral constant expressions. Note This is a separate class for purposes of efficiency; you should only access these members as part of an instantiation of the std::numeric_limits class. Member Data Documentation int std::__numeric_limits_base::digits [static], [constexpr] The number of radix digits that be represented without change: for integer types, the number of non-sign bits in the mantissa; for floating types, the number of radix digits in the mantissa. Referenced by std::generate_canonical(), std::independent_bits_engine< _RandomNumberEngine, __w, _UIntType >::operator()(), and std::linear_congruential_engine< _UIntType, __a, __c, __m >::seed(). int std::__numeric_limits_base::digits10 [static], [constexpr] The number of base 10 digits that can be represented without change. float_denorm_style std::__numeric_limits_base::has_denorm [static], [constexpr] See std::float_denorm_style for more information. bool std::__numeric_limits_base::has_denorm_loss [static], [constexpr] True if loss of accuracy is detected as a denormalization loss, rather than as an inexact result. bool std::__numeric_limits_base::has_infinity [static], [constexpr] True if the type has a representation for positive infinity. bool std::__numeric_limits_base::has_quiet_NaN [static], [constexpr] True if the type has a representation for a quiet (non-signaling) Not a Number. bool std::__numeric_limits_base::has_signaling_NaN [static], [constexpr] True if the type has a representation for a signaling Not a Number. bool std::__numeric_limits_base::is_bounded [static], [constexpr] True if the set of values representable by the type is finite. All built-in types are bounded, this member would be false for arbitrary precision types. bool std::__numeric_limits_base::is_exact [static], [constexpr] True if the type uses an exact representation. All integer types are exact, but not all exact types are integer. For example, rational and fixed-exponent representations are exact but not integer. bool std::__numeric_limits_base::is_iec559 [static], [constexpr] True if-and-only-if the type adheres to the IEC 559 standard, also known as IEEE 754. (Only makes sense for floating point types.) bool std::__numeric_limits_base::is_integer [static], [constexpr] True if the type is integer. bool std::__numeric_limits_base::is_modulo [static], [constexpr] True if the type is modulo. A type is modulo if, for any operation involving +, -, or * on values of that type whose result would fall outside the range [min(),max()], the value returned differs from the true value by an integer multiple of max() - min() + 1. On most machines, this is false for floating types, true for unsigned integers, and true for signed integers. See PR22200 about signed integers. bool std::__numeric_limits_base::is_signed [static], [constexpr] True if the type is signed. bool std::__numeric_limits_base::is_specialized [static], [constexpr] This will be true for all fundamental types (which have specializations), and false for everything else. int std::__numeric_limits_base::max_digits10 [static], [constexpr] The number of base 10 digits required to ensure that values which differ are always differentiated. int std::__numeric_limits_base::max_exponent [static], [constexpr] The maximum positive integer such that radix raised to the power of (one less than that integer) is a representable finite floating point number. int std::__numeric_limits_base::max_exponent10 [static], [constexpr] The maximum positive integer such that 10 raised to that power is in the range of representable finite floating point numbers. int std::__numeric_limits_base::min_exponent [static], [constexpr] The minimum negative integer such that radix raised to the power of (one less than that integer) is a normalized floating point number. int std::__numeric_limits_base::min_exponent10 [static], [constexpr] The minimum negative integer such that 10 raised to that power is in the range of normalized floating point numbers. int std::__numeric_limits_base::radix [static], [constexpr] For integer types, specifies the base of the representation. For floating types, specifies the base of the exponent representation. Referenced by std::generate_canonical(). float_round_style std::__numeric_limits_base::round_style [static], [constexpr] See std::float_round_style for more information. This is only meaningful for floating types; integer types will all be round_toward_zero. bool std::__numeric_limits_base::tinyness_before [static], [constexpr] True if tininess is detected before rounding. (see IEC 559) bool std::__numeric_limits_base::traps [static], [constexpr] True if trapping is implemented for this type. Author Generated automatically by Doxygen for libstdc++ from the source code. libstdc++ std::__numeric_limits_base(3)