[Numpy-discussion] Different results from repeated calculation

Keith Goodman kwgoodman at gmail.com
Mon Jan 29 12:20:43 CST 2007


On 1/27/07, Charles R Harris <charlesr.harris at gmail.com> wrote:

>  Oddly, the relative error is always the same:
>
> 98 z different 2.0494565872e-16
> 99 z different 2.0494565872e-16
>
> Which is nearly the same as the double precision 2.2204460492503131e-16, the
> difference being due to the fact that the precision is defined relative to
> 1, and the error in the computation are in a number relatively larger (more
> bits set, but not yet 2).

Fernando (Ubuntu) and I (Debian) get a different result
(8.47032947254e-22) than you (Fedora) do (2.0494565872e-16).


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