How to convert Num to int

[karlphillip]

I understand Numcan store really big integers. However, sometimes it can store a small number. In this scenario, what would be the best way to convert Num to a regular int?

[983]

The function bool can_convert_to_int(int *result) converts a Num to int, but only if it would fit.

I also thought about overloading cast to int, but it seemed too unsafe. I wanted to discourage conversion where it is not possible.

Documentation could certainly be improved.