[Numpy-discussion] Bug in logaddexp2.reduce
David Cournapeau
david@silveregg.co...
Wed Mar 31 21:02:46 CDT 2010
Ryan May wrote:
> On Wed, Mar 31, 2010 at 5:37 PM, Warren Weckesser
> <warren.weckesser@enthought.com> wrote:
>> T J wrote:
>>> On Wed, Mar 31, 2010 at 1:21 PM, Charles R Harris
>>> <charlesr.harris@gmail.com> wrote:
>>>
>>>> Looks like roundoff error.
>>>>
>>>>
>>> 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
>>>
>> Is any able to reproduce this? I don't get 'nan' in either 1.4.0 or
>> 2.0.0.dev8313 (32 bit Mac OSX). In an earlier email T J reported using
>> 1.5.0.dev8106.
Having the config.h as well as the compilation options would be most
useful, to determine which functions are coming from the system, and
which one are the numpy ones,
cheers,
David
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