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.har...@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 > > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > https://mail.scipy.org/mailman/listinfo/numpy-discussion > >
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