FreeBSD Manual Pages
std::numeric_limits::max(3) C++ Standard Libary std::numeric_limits::max(3) NAME std::numeric_limits::max - std::numeric_limits::max Synopsis Defined in header <limits> static T max() throw(); (until C++11) static constexpr T max() noexcept; (since C++11) Returns the maximum finite value representable by the numeric type T. Meaningful for all bounded types. Return value T std::numeric_limits<T>::max() /* non-specialized */ T() bool true char CHAR_MAX signed char SCHAR_MAX unsigned char UCHAR_MAX wchar_t WCHAR_MAX char8_t (since C++20) UCHAR_MAX char16_t (since C++11) UINT_LEAST16_MAX char32_t (since C++11) UINT_LEAST32_MAX short SHRT_MAX unsigned short USHRT_MAX int INT_MAX unsigned int UINT_MAX long LONG_MAX unsigned long ULONG_MAX long long (since C++11) LLONG_MAX unsigned long long (since C++11) ULLONG_MAX float FLT_MAX double DBL_MAX long double LDBL_MAX Example Demonstrates the use of max() with some fundamental types and some standard library typedefs (the output is system-specific): // Run this code #include <cstddef> #include <iostream> #include <limits> #include <string_view> #include <type_traits> template<typename T> void print_max_twice(std::string_view type) { constexpr T max_value {std::numeric_limits<T>::max()}; std::cout << type << ": "; if constexpr (std::is_floating_point_v<T>) std::cout << std::defaultfloat << max_value << " or " << std::hexfloat << max_value << '\n'; else std::cout << std::dec << static_cast<unsigned long long>(max_value) << " or " << std::hex << static_cast<unsigned long long>(max_value) << '\n'; } int main() { std::cout << std::showbase; print_max_twice<bool>("bool"); print_max_twice<short>("short"); print_max_twice<int>("int"); print_max_twice<std::streamsize>("streamsize"); print_max_twice<std::size_t>("size_t"); print_max_twice<char>("char"); print_max_twice<char16_t>("char16_t"); print_max_twice<wchar_t>("wchar_t"); print_max_twice<float>("float"); print_max_twice<double>("double"); print_max_twice<long double>("long double"); } Possible output: bool: 1 or 0x1 short: 32767 or 0x7fff int: 2147483647 or 0x7fffffff streamsize: 9223372036854775807 or 0x7fffffffffffffff size_t: 18446744073709551615 or 0xffffffffffffffff char: 127 or 0x7f char16_t: 65535 or 0xffff wchar_t: 2147483647 or 0x7fffffff float: 3.40282e+38 or 0x1.fffffep+127 double: 1.79769e+308 or 0x1.fffffffffffffp+1023 long double: 1.18973e+4932 or 0xf.fffffffffffffffp+16380 See also lowest returns the lowest finite value of the given type [static] (C++11) (public static member function) min returns the smallest finite value of the given type [static] (public static member function) http://cppreference.com 2024.06.10 std::numeric_limits::max(3)
NAME | Synopsis | Return value | Example | Possible output: | See also
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=std::numeric_limits::max&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>