On Wed, Mar 31, 2010 at 7:37 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.
>>> np.logaddexp2(-0.5849625007211563, -53.584962500721154)