[petsc-users] snes ex12 question about DMPlexProjectFunctionLocal

[Matthew Knepley]

On Thu, Nov 14, 2013 at 7:32 PM, Geoffrey Irving <irving at naml.us> wrote:

> If this line in ex12 is part of Dirichlet boundary conditions, why is
> it done unconditionally even for Neumann?  Is this a mistake that
> fails to test correct Neumann conditions?
>
>     ierr = DMPlexProjectFunctionLocal(dm, user.fe, user.exactFuncs,
> INSERT_BC_VALUES, userJ.u);CHKERRQ(ierr);
>

No, its just idempotent in that case.

   Matt

Geoffrey
>



-- 
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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