TriDiagonalMatrix

class TriDiagonalMatrix : public Matrix

Data type tridiagonal matrix

Public Methods
TriDiagonalMatrix(int s): Creates tridiagonal matrix of size s.
inline double& operator)(int i, int j): Returns reference to a_{ij}. Index i, j = 0 .. size-1
inline const double& operator) (int i, int j) const: Returns constant reference to a_{ij}. Index i, j = 0 .. size-1
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 MatrixInverse* Inverse() const: Returns a pointer to the inverse matrix.
virtual ~TriDiagonalMatrix(): Destroys tridiagonal matrix.

Public Methods
inline int Size() const
virtual void AddElementMatrix(const Array<int> & dofs, const Matrix & elemmat)
virtual void AddElementMatrix(const Array<int> & dofs1, const Array<int> & dofs2, const RectangularMatrix & elemmat)
CGMatrixInverse* CG(int printiter = 0, int maxnumiter = 1000, double rtol = 10e-12, double atol = 10e-24) const
PCGMatrixInverse* PCG(const MatrixInverse & b, int printiter = 0, int maxnumiter = 1000, double rtol = 10e-12, double atol = 10e-24) const
virtual void Finalize()
virtual void Print(ostream & out = cout, int width =4)