[petsc-dev] section negative offsets

[Matthew Knepley]

On Tue, Sep 17, 2019 at 8:58 AM Hapla Vaclav <vaclav.hapla at erdw.ethz.ch>
wrote:

>
>
> On 17 Sep 2019, at 14:48, Matthew Knepley <knepley at gmail.com> wrote:
>
> On Tue, Sep 17, 2019 at 8:34 AM Hapla Vaclav via petsc-dev <
> petsc-dev at mcs.anl.gov> wrote:
>
>> Can PetscSection offsets other than unset be negative? I.e. could the
>> offset value of -1 be an indicator it was not set and needs to be computed?
>>
>
> No, we use negative offsets for off-process things.
>
>
> And chart bounds?
>

Hmm, I have never used negative chart bounds, and I am not big on requiring
non-negativity since someone might
think of a good use for them.

   Matt


>    Matt
>
>
>> Thanks,
>> Vaclav
>
>
>
> --
> 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
>
> https://www.cse.buffalo.edu/~knepley/
> <http://www.cse.buffalo.edu/~knepley/>
>
>
>

-- 
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

https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
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