chore: Make pow use early return

[spotandjake]

This pr refactors pow to use early return.

This also adds a small optimization to Rational**Int Cases.

[spotandjake]

I went with the approach of just stealing the code out from rationalDenominator and rationalNumerator but I am not 100% sure I put the incRef call in the correct place.

[ospencer]

Could you just call rationalDenominator and rationalNumerator directly?

[spotandjake]

Could you just call rationalDenominator and rationalNumerator directly?

I would have to do what alex was saying of WasmI32.toGrain(WasmI32.fromGrain(base)): Rational given it wants a Rational wouldnt I. and then that requires a Memory.incRef call right? would the incRef?

[ospencer]

Yep, you'd need to do that. The incref just goes in the middle.

[spotandjake]

Also is this breaking given 1/2^3 will no longer give 0.125 but will give 1/8?

[ospencer]

Yeah, certainly that too. It's probably worth it to separate them into two PRs, one that does early return, and the other that changes the squaring of rationals. Do you want to let this PR be the early return one and you can open another after with the behavior change?

[spotandjake]

👍

[spotandjake]

I reverted those commits after this gets merged I will add that on a separate pr.