BilinearForm

class BilinearForm : public Matrix

Class for bilinear form.

Public Methods
BilinearForm(FiniteElementSpace * f): Creates bilinear form associated with FE space *f.
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 (approximation) of the matrix inverse.
virtual void Finalize(): Finalizes the matrix initialization.
const SparseMatrix& SpMat() const: Returns a reference to the sparse martix
void AddDomainIntegrator(BilinearFormIntegrator * bfi): Adds new Domain Integrator.
void AddBoundaryIntegrator(BilinearFormIntegrator * bfi): Adds new Boundary Integrator.
void Assemble(): Assembles the form i.e. sums over all domain/bdr integrators.
~BilinearForm(): Destroys bilinear form.

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