Macro simple_units::mul_div_unit

macro_rules! mul_div_unit {
    ($unit1:ident, $unit2:ident, $unit3:ident) => { ... };
    ($unit1:ident, $unit2:ident) => { ... };
}

This macro implements multiplication and division for a given unit

Example:

init_unit!(Joule);
init_unit!(Meter);
init_unit!(Newton);
mul_div_unit!(Joule, Meter, Newton);