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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 (C++20) UCHAR_MAX char16_t (C++11) UINT_LEAST16_MAX char32_t (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 (C++11) LLONG_MAX unsigned long long (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 <limits> #include <cstddef> #include <iostream> int main() { std::cout << "short: " << std::dec << std::numeric_lim- its<short>::max() << " or " << std::hex << std::showbase << std::nu- meric_limits<short>::max() << '\n' << "int: " << std::dec << std::numeric_lim- its<int>::max() << " or " << std::hex << std::numeric_limits<int>::max() << '\n' << std::dec << "streamsize: " << std::dec << std::numeric_lim- its<std::streamsize>::max() << " or " << std::hex << std::numeric_lim- its<std::streamsize>::max() << '\n' << "size_t: " << std::dec << std::numeric_lim- its<std::size_t>::max() << " or " << std::hex << std::numeric_lim- its<std::size_t>::max() << '\n' << "float: " << std::numeric_limits<float>::max() << " or " << std::hexfloat << std::numeric_lim- its<float>::max() << '\n' << "double: " << std::defaultfloat << std::numeric_lim- its<double>::max() << " or " << std::hexfloat << std::numeric_limits<dou- ble>::max() << '\n'; } Possible output: short: 32767 or 0x7fff int: 2147483647 or 0x7fffffff streamsize: 9223372036854775807 or 0x7fffffffffffffff size_t: 18446744073709551615 or 0xffffffffffffffff float: 3.40282e+38 or 0x1.fffffep+127 double: 1.79769e+308 or 0x1.fffffffffffffp+1023 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 2022.07.31 std::numeric_limits::max(3)
NAME | Synopsis | Return value | Example | Possible output: | See also
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