[petsc-users] SNESSetUpdate function

[Matthew Knepley]

On Fri, Jan 20, 2012 at 8:28 AM, Bernardo Rocha <
bernardomartinsrocha at gmail.com> wrote:

> Hi everyone,
>
> I'm using SNES but I would like to update my data after each successful
> step computation within the nonlinear solver using a different function. I
> mean, after the solution of each linear system I would like to get \Delta
> x_k to update x_{k+1} which is stored somewhere in my application class
> (C++ code). Looking at the documentation I found this function:
>
> PetscErrorCode SNESSetUpdate(SNES snes, PetscErrorCode (*func)(SNES,
> PetscInt))
>
> but func does not take an application context "object" like void *ctx,
> that I could use to get my data and finally update it. Is there another
> function that would allow me to do this?
>

Can you use
http://www.mcs.anl.gov/petsc/petsc-dev/docs/manualpages/SNES/SNESGetApplicationContext.html

   Matt


> Thanks in advance,
> Best regards,
> Bernardo M. Rocha
>
>
>


-- 
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
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