std::numeri..._specialized(3) C++ Standard Libary std::numeri..._specialized(3) NAME std::numeric_limits::is_specialized - std::numeric_limits::is_specialized Synopsis static const bool is_specialized; (until C++11) static constexpr bool is_specialized; (since C++11) The value of std::numeric_limits<T>::is_specialized is true for all T for which there exists a specialization of std::numeric_limits. Standard specializations T value of std::numeric_lim- its<T>::is_specialized /* non-specialized */ false bool true char true signed char true unsigned char true wchar_t true char8_t (since C++20) true char16_t (since C++11) true char32_t (since C++11) true short true unsigned short true int true unsigned int true long true unsigned long true long long (since C++11) true unsigned long long (since C++11) true float true double true long double true Example // Run this code #include <iostream> #include <limits> #include <type_traits> int main() { enum E{}; std::cout << std::boolalpha << std::numeric_limits<bool>::is_specialized << '\n' << std::numeric_limits<long long>::is_specialized << '\n' << std::numeric_limits<std::true_type>::is_specialized << '\n' << std::numeric_limits<E>::is_specialized << '\n'; } Possible output: true true false false See also is_integer identifies integer types [static] (public static member constant) is_iec559 identifies the IEC 559/IEEE 754 floating-point types [static] (public static member constant) is_exact identifies exact types [static] (public static member constant) is_bounded identifies types that represent a finite set of values [static] (public static member constant) http://cppreference.com 2024.06.10 std::numeri..._specialized(3)
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