Advance to stage 1 and make summation precise

tc39 / proposal-math-sum

TC39 proposal to add a summation method to JavaScript

https://tc39.github.io/proposal-math-sum

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Advance to stage 1 and make summation precise #2

Closed bakkot closed 6 months ago

bakkot commented 6 months ago

Per #1.

I've added a polyfill to confirm that it's practical to do full-precision summation. I also added a second one based on BigInts to confirm the correctness of the first (there's some nasty edge cases with rounding).