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A comment on Malicious code in the purescript NPM installer. Parent comment

Re:Malicious code in the purescript NPM installer by ben509 on Monday July 29, 2019 @10:12AM (#20554765)
> edge cases already figured out.

Nope, it doesn't guarantee its invariants. This would pass all the tests and yet returns a value out of bounds:

    > s = 1e12
    1000000000000
    > e = 1e-8
    1e-8
    > s + 1.0 * (e - s)
    0
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