BlockMatrix.h

Note

The documentation on this page was automatically extracted from the DOLFIN C++ code and may need to be edited or expanded.

class BlockMatrix

Block Matrix

BlockMatrix(std::size_t m = 0, std::size_t n = 0)

Constructor

void set_block(std::size_t i, std::size_t j, std::shared_ptr<GenericMatrix> m)

Set block

std::shared_ptr<const GenericMatrix> get_block(std::size_t i, std::size_t j) const

Get block (const version)

std::shared_ptr<GenericMatrix> get_block(std::size_t i, std::size_t j)

Get block

std::size_t size(std::size_t dim) const

Return size of given dimension

void zero()

Set all entries to zero and keep any sparse structure

void apply(std::string mode)

Finalize assembly of tensor

std::string str(bool verbose) const

Return informal string representation (pretty-print)

void mult(const BlockVector &x, BlockVector &y, bool transposed = false) const

Matrix-vector product, y = Ax

std::shared_ptr<GenericMatrix> schur_approximation(bool symmetry = true) const

Create a crude explicit Schur approximation of S = D - C A^-1 B of (A B; C D) If symmetry != 0, then the caller promises that B = symmetry * transpose(C).