[dune-pdelab] Accessing constraints

[Markus Blatt]

On Mon, Jan 27, 2014 at 10:40:02PM +0100, Christian Engwer wrote:
> > This works, i.e., the matrix is modified as expected.  However, I need the Dirichlet
> > information for other things, too.  Therefore my question:  How can I obtain the
> > list of Dirichlet nodes from the cg object?  Does the cg object implement an API
> > that I can query?  If yes, where is it (in the doxygen documentation)?
> 
> surely the c object implements some kind of API, but it is internal

if only Dirichlet dofs are contrained, one could of course just take a
vector from the linear algebra backend and use set_constrained_dofs to
mark them. But this will surely not work in a parallel program or if
there are other constrained nodes.

Markus
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