[petsc-users] MatGetRowMinAbs returns negative number

[Matthew Knepley]

On Wed, Jan 4, 2012 at 10:29 AM, Dominik Szczerba <dominik at itis.ethz.ch>wrote:

> I have just noticed that MatGetRowMinAbs (but not the Max variant) in
> some cases returns a very small negative number like -1.62505e-17
> (displayed as %g). Is this an epsilon effect or an indication of a
> problem?
>

Its not possible that was actually the minimum element?

  Matt


> Regards,
> Dominik
>



-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120104/828132d7/attachment.htm>