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std::numeric_limits::min(3) C++ Standard Libary std::numeric_limits::min(3) NAME std::numeric_limits::min - std::numeric_limits::min Synopsis Defined in header <limits> static T min() throw(); (until C++11) static constexpr T min() noexcept; (since C++11) Returns the minimum finite value representable by the numeric type T. For floating-point types with denormalization, min returns the mini- mum positive normalized value. Note that this behavior may be unexpected, espe- cially when compared to the behavior of min for integral types. To find the value that has no values less than it, use numeric_limits::lowest. min is only meaningful for bounded types and for unbounded unsigned types, that is, types that represent an infinite set of negative values have no meaningful minimum. Return value T std::numeric_limits<T>::min() /* non-specialized */ T() bool false char CHAR_MIN signed char SCHAR_MIN unsigned char 0 wchar_t WCHAR_MIN char8_t (C++20) 0 char16_t (C++11) 0 char32_t (C++11) 0 short SHRT_MIN unsigned short 0 int INT_MIN unsigned int 0 long LONG_MIN unsigned long 0 long long (C++11) LLONG_MIN unsigned long long (C++11) 0 float FLT_MIN double DBL_MIN long double LDBL_MIN Example Demonstrates the use with typedef types, and the difference in the sign of the result between integer and floating-point types // Run this code #include <limits> #include <cstddef> #include <iostream> int main() { std::cout << "short: " << std::dec << std::numeric_limits<short>::min() << " or " << std::hex << std::showbase << std::numeric_limits<short>::min() << '\n' << "int: " << std::dec << std::numeric_limits<int>::min() << std::showbase << " or " << std::hex << std::numeric_limits<int>::min() << '\n' << std::dec << "ptrdiff_t: " << std::numeric_limits<std::ptrdiff_t>::min() << std::showbase << " or " << std::hex << std::numeric_lim- its<std::ptrdiff_t>::min() << '\n' << "float: " << std::numeric_limits<float>::min() << " or " << std::hexfloat << std::numeric_lim- its<float>::min() << '\n' << "double: " << std::defaultfloat << std::numeric_limits<dou- ble>::min() << " or " << std::hexfloat << std::numeric_limits<dou- ble>::min() << '\n'; } Possible output: short: -32768 or 0x8000 int: -2147483648 or 0x80000000 ptrdiff_t: -9223372036854775808 or 0x8000000000000000 float: 1.17549e-38 or 0x1p-126 double: 2.22507e-308 or 0x1p-1022 See also lowest returns the lowest finite value of the given type [static] (C++11) (public static member function) denorm_min returns the smallest positive subnormal value of the given [static] floating-point type (public static member function) max returns the largest finite value of the given type [static] (public static member function) http://cppreference.com 2022.07.31 std::numeric_limits::min(3)
NAME | Synopsis | Return value | Example | Possible output: | See also
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