12#ifndef MORTAR_SCHUR_HPP_
13#define MORTAR_SCHUR_HPP_
15#include <dune/istl/matrixmatrix.hh>
58 Dune::InverseOperatorResult res;
61 op.apply(temp, temp1);
63 B.usmtv(alpha, temp, y);
66 Dune::SolverCategory::Category category()
const override
68 return Dune::SolverCategory::sequential;
Helper class for abstracting differences between inverse operators and preconditioners in DUNE.
This implements a operator evaluation for the schur mortar-block S = B^T*A^-1*B !
Definition mortar_schur.hpp:27
void apply(const Vector &x, Vector &y) const override
Apply the multiplier block.
Definition mortar_schur.hpp:42
OperatorApplier< T > op
Applier for the preconditioner / inverse solver.
Definition mortar_schur.hpp:74
void applyscaleadd(field_type alpha, const Vector &x, Vector &y) const override
Apply the multiplier block with an embedded axpy.
Definition mortar_schur.hpp:52
const Matrix & B
Reference to the mortar coupling matrix.
Definition mortar_schur.hpp:73
T & Ai
Reference to solver or evaluator for inverse operator.
Definition mortar_schur.hpp:72
MortarBlockEvaluator(T &Ai_, const Matrix &B_)
Constructor.
Definition mortar_schur.hpp:33
Helper class with some matrix operations.
Dune::BCRSMatrix< Dune::FieldMatrix< double, 1, 1 > > Matrix
A sparse matrix holding our operator.
Definition matrixops.hpp:27
Dune::BlockVector< Dune::FieldVector< double, 1 > > Vector
A vector holding our RHS.
Definition matrixops.hpp:33
Inverting small matrices.
Definition ImplicitAssembly.hpp:43
Class abstracting a preconditioner or an inverse operator.
Definition applier.hpp:24