std::numeric_limits<T>::min_exponent

The value of std::numeric_limits <T> :: min_exponent is the lowest negative number n such that \(\scriptsize r^{n-1}\) rn-1
, where r is std::numeric_limits <T> :: radix , is a valid normalized value of the floating-point type T

Standard specializations

Example

#include <iostream>
#include <limits>
 
int main()
{
    std::cout << "min() = " << std::numeric_limits<float>::min() << '\n'
              << "min_exponent10 = " << std::numeric_limits<float>::min_exponent10 << '\n'
              << std::hexfloat << '\n'
              << "min() = " << std::numeric_limits<float>::min() << '\n'
              << "min_exponent = " << std::numeric_limits<float>::min_exponent << '\n';
}

min() = 1.17549e-38
min_exponent10 = -37
 
min() = 0x1p-126
min_exponent = -125

See also