class Matrix

Abstract data type matrix

Inheritance:

Public Methods

Matrix(int s)

Creates matrix of width s.

inline int Size() const

Returns the width of a matrix.

virtual double& Elem(int i, int j)

Returns reference to a_{ij}. Index i, j = 0 .. size-1

virtual const double& Elem(int i, int j) const

Returns constant reference to a_{ij}. Index i, j = 0 .. size-1

virtual void Mult(const Vector & x, Vector & y) const

Matrix vector multiplication.

virtual void AddElementMatrix(const Array<int> & dofs, const Matrix & elemmat)

Add (element) submatrix to the matrix.

virtual void AddElementMatrix(const Array<int> & dofs1, const Array<int> & dofs2, const RectangularMatrix & elemmat)

Add (element) submatrix to the matrix.

virtual MatrixInverse* Inverse() const

Returns a pointer to (approximation) of the matrix inverse.

CGMatrixInverse* CG(int printiter = 0, int maxnumiter = 1000, double rtol = 10e-12, double atol = 10e-24) const

Returns a pointer to CGMatrixInverse class

PCGMatrixInverse* PCG(const MatrixInverse & b, int printiter = 0, int maxnumiter = 1000, double rtol = 10e-12, double atol = 10e-24) const

Returns a pointer to PCGMatrixInverse class

virtual void Finalize()

Finalizes the matrix initialization.

virtual void Print(ostream & out = cout, int width =4)

Prints matrix to stream out.

virtual ~Matrix()

Destroys matrix.

Matrix(int s)

Creates matrix of width s.

inline int Size() const

Returns the width of a matrix.

virtual double& Elem(int i, int j)

Returns reference to a_{ij}. Index i, j = 0 .. size-1

virtual const double& Elem(int i, int j) const

Returns constant reference to a_{ij}. Index i, j = 0 .. size-1

virtual void Mult(const Vector & x, Vector & y) const

Matrix vector multiplication.

virtual void AddElementMatrix(const Array<int> & dofs, const Matrix & elemmat)

Add (element) submatrix to the matrix.

virtual void AddElementMatrix(const Array<int> & dofs1, const Array<int> & dofs2, const RectangularMatrix & elemmat)

Add (element) submatrix to the matrix.

virtual MatrixInverse* Inverse() const

Returns a pointer to (approximation) of the matrix inverse.

CGMatrixInverse* CG(int printiter = 0, int maxnumiter = 1000, double rtol = 10e-12, double atol = 10e-24) const

Returns a pointer to CGMatrixInverse class. When the default arguments are used CG doesn't print current residual and number of iterations, maximum number of iterations is 1000 and the tolerance is 10e-12. *

PCGMatrixInverse* PCG(const MatrixInverse & b, int printiter = 0, int maxnumiter = 1000, double rtol = 10e-12, double atol = 10e-24) const

Returns a pointer to PCGMatrixInverse class. When the default arguments are used PCG doesn't print current residual and number of iterations, maximum number of iterations is 1000 and the tolerance is 10e-12. *

virtual void Finalize()

Finalizes the matrix initialization.

virtual void Print(ostream & out = cout, int width =4)

Prints matrix to stream out.

virtual ~Matrix()

Destroys matrix.

Direct child classes:

TriDiagonalMatrix
SymDenseMatrix
SparseMatrix
RectangularMatrix
BilinearForm
BandMatrix

alphabetic index hierarchy of classes

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