[Numpy-discussion] numpy.float64(numpy.NaN)!=numpy.NaN
Albert Strasheim
fullung at gmail.com
Mon May 15 01:11:40 EDT 2006
Hey Simon
I think this is a feature. NaN is never equal to anything else, including
itself. MATLAB does the same thing:
>> nan==nan
ans =
0
>> inf==inf
ans =
1
Regards,
Albert
> -----Original Message-----
> From: numpy-discussion-admin at lists.sourceforge.net [mailto:numpy-
> discussion-admin at lists.sourceforge.net] On Behalf Of Simon Burton
> Sent: 15 May 2006 09:09
> To: numpy-discussion at lists.sourceforge.net
> Subject: [Numpy-discussion] numpy.float64(numpy.NaN)!=numpy.NaN
>
>
> >>> numpy.float64(numpy.NaN)==numpy.NaN
> False
>
> Hmm. Bug or feature ?
>
> >>> numpy.__version__
> 0.9.7.2502
>
> Simon.
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