[Numpy-discussion] should rint return int?

Chris Barker chris.barker at noaa.gov
Mon Apr 28 13:49:21 EDT 2014


On Mon, Apr 28, 2014 at 10:36 AM, Neal Becker <ndbecker2 at gmail.com> wrote:

> I notice rint returns float.  Shouldn't it return int?
>

AFAICT, rint() is the same as round(), except with slightly different rules
for the "halfway" case. So returning a float makes sense, as round() and
ceil() and floor() all do.

( though I've always thought those should return inegers, too... )

By the way, what IS the difference between rint and round?

In [37]: for val in [-2.5, -3.5, 2.5, 3.5]:
   ....:     assert np.rint(val) == np.round(val)
   ....:

In [38]:

-CHB


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Chris.Barker at noaa.go <Chris.Barker at noaa.gov>
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