ffc team mailing list archive

[Johan Jansson <jjan@xxxxxxxxxxx>]

On Tue, Sep 19, 2006 at 08:25:45PM +0200, Anders Logg wrote:
> I've added support for evaluation of functionals to FFC and DOLFIN.
> An example can be found in src/demo/pde/functional
> 
> A functional is defined as follows in FFC (here an energy norm):
> 
>   v = Function(element)
>   M = (v*v + dot(grad(v), grad(v)))*dx
> 
> Then in DOLFIN, just assemble the functional directly:
> 
>   EnergyNorm::Functional M(v);
>   real value = FEM::assemble(M, mesh);
> 
> Note that functionals may be defined for an arbitrary number of
> arguments and that they don't need to be linear.
> 
> /Anders

Very nice. So the only missing piece for automated error estimation is
to construct the residual (and the dual eventually)?

  Johan