Is there a nicer way to get the absolute value of a complex number?

I currently have `((z.re * z.re) + (z.im * z.im)).sqrt()`

where `z: num::Complex<f64>`

. In python, I can write this as `abs(z)`

.

the `num`

crate doesn't seem to have `abs()`

for complex numbers. Just wondering if I'm missing something? If not, may be my first contribution for a rust project...