Resolution versus tick frequency

I understand that

std::chrono::high_resolution_clock::period::num / std::chrono::high_resolution_clock::period::den;

      

        
        
        
      

    

specify the tick frequency, but how can I determine the clock resolution? (under windows this relation brings me back 1e-007

)

For example, in windows high_resolution_clock

there is typedef

of system_clock

which fades every ~ 15ms with 100μs precision, and boost::chrono high_resolution_clock

is typedef

of steady_clock

how can I determine its resolution