Hey Daniel,
Thanks for the reply!
I tried doing what you suggested. The code snippet:
void * ptr = nullptr; //I tried with NULL and 0 synonyms as well
MatrixCreator::create_mass_matrix(dof_handler,
QGauss<dim>(fe.degree+1), mass_matrix, ptr , constraints);
The error:
step-26.cc:209:69: error: no matching function for call to
‘create_mass_matrix(dealii::DoFHandler<2>&, dealii::QGauss<2>,
dealii::SparseMatrix<double>&, void*&, dealii::ConstraintMatrix&)’
mass_matrix, ptr , constraints);
^
On Thursday, 16 February 2017 14:23:21 UTC+5:30, Sumedh Yadav wrote:
>
> Hello,
> I want to use the *create_mass_matrix* and *create_laplace_matrix*
> functionality of MatrixCreator namespace. The function prototype here
> requires to pass a pointer (which is by default 0 meaning that there is no
> variable coefficient associated with variable or laplace of variable) to a
> function object. I want to build the mass/laplace matrices taking in
> account the constraints so I pass the ConstraintMatrix argument as the last
> argument of the function. Code snippet:
>
> MatrixCreator::create_mass_matrix(dof_handler,
> QGauss<dim>(fe.degree+1), mass_matrix, ________, constraints);
>
> Here dof_hadler, mass_matrix and constraints are appropriate objects as
> the name suggests. I don't have the variable coefficient/s so I need to
> know what to pass in the blank space which requires a pointer argument as
> mentioned above?
>
> Thank you
>
>
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