[Numpy-discussion] int 'up'casted to uint

Pau Gargallo pau.gargallo at gmail.com
Thu Jul 13 04:52:31 CDT 2006


On 7/11/06, Pau Gargallo <pau.gargallo at gmail.com> wrote:
> On 7/11/06, Travis Oliphant <oliphant.travis at ieee.org> wrote:
> > Pau Gargallo wrote:
> > > hi,
> > >
> > > looking at the upcasting table at
> > > http://www.scipy.org/Tentative_NumPy_Tutorial#head-4c1d53fe504adc97baf27b65513b4b97586a4fc5
> > > I saw that int's are sometimes casted to uint's.
> > >
> > > In [3]: a = array([3],int16)
> > > In [5]: b = array([4],uint32)
> > > In [7]: a+b
> > > Out[7]: array([7], dtype=uint32)
> > >
> > > is that intended?
> > >
> > It's a bug.  The result should be int64.  I've fixed it in SVN.
> >
>
> Thanks!!
>
hi Travis,
now uint64+int gives float64.
Obtaining a float from ints surprise me. But anyway, I don't know if
there is a better choice.

pau




More information about the Numpy-discussion mailing list