std::numeric_limits<T>::infinity

Returns the special value "positive infinity", as represented by the floating-point type T. Only meaningful if std::numeric_limits <T> :: has_infinity == true

Return value

Example

#include <iostream>
#include <limits>
 
int main()
{
    double max = std::numeric_limits<double>::max();
    double inf = std::numeric_limits<double>::infinity();
 
    if (inf > max)
        std::cout << inf << " is greater than " << max << '\n';
}

inf is greater than 1.79769e+308

See also