[Numpy-discussion] numpy.float64(numpy.NaN)!=numpy.NaN

[Sasha]

BTW,

>>> from numpy import *
>>> nan == nan
False

>>> from decimal import *
>>> Decimal('NaN') == Decimal('NaN')
False

and finally (may not work on all platforms):

>>> float('NaN') == float('NaN')
False



On 5/15/06, Sasha <ndarray at mac.com> wrote:
> It's a feature IEEE standard requires that NaNs are not equal to any
> floating point numbers including other NaNs.
>
> On 5/15/06, Simon Burton <simon at arrowtheory.com> wrote:
> >
> > >>> numpy.float64(numpy.NaN)==numpy.NaN
> > False
> >
> > Hmm. Bug or feature ?
> >
> > >>> numpy.__version__
> > 0.9.7.2502
> >
> > Simon.
> >
> > --
> > Simon Burton, B.Sc.
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