Function to_polar 

pub fn to_polar<T>(x: Cartesian<T>) -> Polar<T>
where
    T: MixedNum + MixedNumSigned + MixedSqrt + MixedAtan + MixedPowi + MixedAbs + MixedOps,

Cast cartesian complex fixed point number to polar form.

Arguments

• x - The number transform.