[petsc-users] SNESSetUpdate function

[Bernardo Rocha]

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?

Thanks in advance,
Best regards,
Bernardo M. Rocha
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