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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-FLT_MIN is undefined? (only guessing, I think -INT_MIN was in any case..?)
-INT_MIN = INT_MAX+1 = INT_MIN because in twos complement there's one more negative number than there are positive numbers. FLT_MIN is simply the smallest positive normalized float. There's no issue with -FLT_MIN afaik. Just the same number with sign bit flipped.
