How do I convert a num::Rational to a decimal number?

Question

I'm trying to use the external library num with the goal to convert fractions to arbitrarily long decimal points, however, by reading the docs, I cannot find some clarifying example to convert a fraction to a decimal number. Anyone know how?

Answer 1

I think that printing out arbitrary precision decimals is simply a hard problem. I don't see that the GNU Multiple Precision (GMP) Arithmetic Library supports this functionality. While Rust isn't built on top of GMP, if GMP doesn't have it I wouldn't expect Rust to have it.

The best you may be able to do is divide the numerator by the denominator yourself...