My answer to "implement fabs(), incorrectly". Seven and one third internet points to anyone who can say why it's incorrect, without looking up the spec. Hint: It's implementation defined. (Using C99 semantics because that's the only one I know reasonably well. :)https://twitter.com/oe1cxw/status/1144274172253822976 …
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fmax on zeros is required to return one of them but it is implementation defined which so fabs(0) = fmax(+0, -0) = -0 is possible and that is not fabs!
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How do we represent the third? Can I have ever so slightly more or less internet points?
Thanks. Twitter will use this to make your timeline better. UndoUndo
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