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Fix wrong NaN check in MovingFunctions#stdDev() #31888

Merged
merged 1 commit into from
Jul 10, 2018
Merged

Fix wrong NaN check in MovingFunctions#stdDev() #31888

merged 1 commit into from
Jul 10, 2018

Commits on Jul 9, 2018

  1. Fix broken NaN check in MovingFunctions#stdDev() 

    The initial check will never be true, because of the special semantics of NaN,
where no value is equal to Nan, including NaN. Thus, x == Double.NaN always
evaluates to false. The method still works correct because later computations
will also return NaN if the avg argument is NaN, but the intended shortcut
doesn't work.
    Christoph Büscher committed Jul 9, 2018
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