On Thu, 05 Dec 2013, Nikolaas N. Oosterhof wrote:

>    Fine, I can make it np.logical_not. But I think the semantics are the same
>    as '-' when applied to a boolean array (what else could it reasonably be)?

could be just -0, i.e. 0 for -False if it was pure Python:

> python -c 'import numpy as np; print -False, -np.array(False)'
0 True

>    Re #huh2: indeed it checks for all non-nan elements less than epsilon. The
>    restriction to non-nan elements is necessary because otherwise elements in
>    the array may evaluate to False undesirably.

yeap... it is just your original explanation confused me :-P
-- 
Yaroslav O. Halchenko, Ph.D.
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