On Wed, Mar 31, 2010 at 6:08 PM, <josef.p...@gmail.com> wrote: > On Wed, Mar 31, 2010 at 7:37 PM, Warren Weckesser > <warren.weckes...@enthought.com> wrote: > > T J wrote: > >> On Wed, Mar 31, 2010 at 1:21 PM, Charles R Harris > >> <charlesr.har...@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) > nan > >>> np.logaddexp2(-1.5849625007211563, -53.584962500721154) > -1.5849625007211561 > > >>> np.version.version > '1.4.0' > > WindowsXP 32 > > What compiler? Mingw?
Chuck
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