[Python-ideas] math.inf and math.nan constants

Steven D'Aprano steve at pearwood.info
Thu Jan 8 00:23:05 CET 2015


On Thu, Jan 08, 2015 at 05:58:03AM +1100, Alexander Heger wrote:

> IEEE754 requires that all comparisons with NaN give false, i.e.,

Not quite. "Not equal" comparisons should return true.

NANs should compare unordered and unequal to everything including 
themselves.

-- 
Steve


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