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by jacobolus
2640 days ago
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That paper is about implementing branch cuts in a complex-valued function (e.g. complex square root), and doesn’t discuss real square roots. In the context of that paper it seems to me that √(–0 – 0i) should be 0 – 0i and √(–0 + 0i) should be 0 + 0i, but under no circumstances should the result be –0 ± 0i, which is on the wrong branch. The obvious extension to real-valued square root would be √(–0) == +0. |
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