[Numpy-discussion] Sign of NaN

[Freddy Rietdijk]

I wouldn't know of any valid output when applying the sign function to NaN.
Therefore, I think it is correct to return a ValueError. Furthermore, I
would prefer such an error over just returning NaN since it helps you
locating where NaN is generated.

On Tue, Sep 29, 2015 at 5:13 PM, Charles R Harris <charlesr.harris at gmail.com
> wrote:

> Hi All,
>
> Due to a recent commit, Numpy master now raises an error when applying the
> sign function to an object array containing NaN. Other options may be
> preferable, returning NaN for instance, so I would like to open the topic
> for discussion on the list.
>
> Thoughts?
>
> Chuck
>
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