How to handle units in c++ interface

Question

I am currently designing an API where I want that the user to be able to write code like this:

PowerMeter.forceVoltage(1 mV);
PowerMeter.settlingTime(1 ms);
         


        

Answer 1

how about instead turning it around a bit by creating classes (ms,mV) for the different currents

e.g.

PowerMeter.forceVoltage( mV(1) );  
PowerMeter.settlingTime( ms(1) )

It is pretty clear to the user and arguably not hard to read plus you would get type checking for free. having a common base class for the different units would make it easier to implement.