[Numpy-discussion] Bug in logaddexp2.reduce

Charles R Harris charlesr.harris@gmail....
Wed Mar 31 21:06:00 CDT 2010


On Wed, Mar 31, 2010 at 4:42 PM, T J <tjhnson@gmail.com> wrote:

> On Wed, Mar 31, 2010 at 3:36 PM, Charles R Harris
> <charlesr.harris@gmail.com> wrote:
> >> So this is "expected" behavior?
> >>
> >> In [1]: np.logaddexp2(-1.5849625007211563, -53.584962500721154)
> >> Out[1]: -1.5849625007211561
> >>
> >> In [2]: np.logaddexp2(-0.5849625007211563, -53.584962500721154)
> >> Out[2]: nan
> >>
> > I don't see that
> >
> > In [1]: np.logaddexp2(-0.5849625007211563, -53.584962500721154)
> > Out[1]: -0.58496250072115619
> >
> > In [2]: np.logaddexp2(-1.5849625007211563, -53.584962500721154)
> > Out[2]: -1.5849625007211561
> >
> > What system are you running on.
> >
>
> $ python --version
> Python 2.6.4
>
> $ uname -a
> Linux localhost 2.6.31-20-generic-pae #58-Ubuntu SMP Fri Mar 12
> 06:25:51 UTC 2010 i686 GNU/Linux
>

That is a 32 bit kernel, right?

Chuck
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