MFEM  v3.3.2
Finite element discretization library
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mfem::RAPOperator Class Reference

The operator x -> R*A*P*x. More...

#include <operator.hpp>

Inheritance diagram for mfem::RAPOperator:
Collaboration diagram for mfem::RAPOperator:

Public Member Functions

 RAPOperator (const Operator &Rt_, const Operator &A_, const Operator &P_)
 Construct the RAP operator given R^T, A and P. More...
virtual void Mult (const Vector &x, Vector &y) const
 Operator application. More...
virtual void MultTranspose (const Vector &x, Vector &y) const
 Application of the transpose. More...
- Public Member Functions inherited from mfem::Operator
 Operator (int s=0)
 Construct a square Operator with given size s (default 0). More...
 Operator (int h, int w)
 Construct an Operator with the given height (output size) and width (input size). More...
int Height () const
 Get the height (size of output) of the Operator. Synonym with NumRows(). More...
int NumRows () const
 Get the number of rows (size of output) of the Operator. Synonym with Height(). More...
int Width () const
 Get the width (size of input) of the Operator. Synonym with NumCols(). More...
int NumCols () const
 Get the number of columns (size of input) of the Operator. Synonym with Width(). More...
virtual OperatorGetGradient (const Vector &x) const
 Evaluate the gradient operator at the point x. The default behavior in class Operator is to generate an error. More...
virtual const OperatorGetProlongation () const
 Prolongation operator from linear algebra (linear system) vectors, to input vectors for the operator. NULL means identity. More...
virtual const OperatorGetRestriction () const
 Restriction operator from input vectors for the operator to linear algebra (linear system) vectors. NULL means identity. More...
void FormLinearSystem (const Array< int > &ess_tdof_list, Vector &x, Vector &b, Operator *&A, Vector &X, Vector &B, int copy_interior=0)
 Form a constrained linear system using a matrix-free approach. More...
virtual void RecoverFEMSolution (const Vector &X, const Vector &b, Vector &x)
 Reconstruct a solution vector x (e.g. a GridFunction) from the solution X of a constrained linear system obtained from Operator::FormLinearSystem(). More...
void PrintMatlab (std::ostream &out, int n=0, int m=0) const
 Prints operator with input size n and output size m in Matlab format. More...
virtual ~Operator ()
 Virtual destructor. More...

Additional Inherited Members

- Public Types inherited from mfem::Operator
enum  Type {
 Enumeration defining IDs for some classes derived from Operator. More...
- Protected Attributes inherited from mfem::Operator
int height
 Dimension of the output / number of rows in the matrix. More...
int width
 Dimension of the input / number of columns in the matrix. More...

Detailed Description

The operator x -> R*A*P*x.

Definition at line 320 of file operator.hpp.

Constructor & Destructor Documentation

mfem::RAPOperator::RAPOperator ( const Operator Rt_,
const Operator A_,
const Operator P_ 

Construct the RAP operator given R^T, A and P.

Definition at line 331 of file operator.hpp.

Member Function Documentation

virtual void mfem::RAPOperator::Mult ( const Vector x,
Vector y 
) const

Operator application.

Implements mfem::Operator.

Definition at line 336 of file operator.hpp.

virtual void mfem::RAPOperator::MultTranspose ( const Vector x,
Vector y 
) const

Application of the transpose.

Reimplemented from mfem::Operator.

Definition at line 340 of file operator.hpp.

The documentation for this class was generated from the following file: