Lucas:
I'm trying to use the block_operator technique on Trilinos vectors and
matrices, but I can't quite get it to compile. For simplicity, the relevant
lines of code are:
```
#include <deal.II/lac/linear_operator_tools.h>
#include <deal.II/lac/trilinos_linear_operator.h>
using vec = dealii::LinearAlgebraTrilinos::MPI::Vector;
using block_vec = dealii::LinearAlgebraTrilinos::MPI::BlockVector;
const auto B = dealii::TrilinosWrappers::linear_operator<vec,
vec>(system_matrix.block(0, 0));
const auto P_inv = dealii::TrilinosWrappers::block_operator<1, 1,
block_vec>({B});
```
where system_matrix is of type
`dealii::LinearAlgebraTrilinos::MPI::BlockSparseMatrix`.
The first error that comes up looks like:
`deal.II/lac/block_linear_operator.h:679:37: error:
‘populate_linear_operator_functions’ was not declared in this scope; did you
mean
‘dealii::internal::BlockLinearOperatorImplementation::populate_linear_operator_functions’?`
Is this a bug in deal.II?
Perhaps. I don't know the LinearOperator framework well, and so don't quite
know what to suggest -- I hope that someone else might chime in.
Is the code above all you actually need?
Best
W.
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Wolfgang Bangerth email: [email protected]
www: http://www.math.colostate.edu/~bangerth/
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