BlockMatrix

class dolfin.cpp.la.BlockMatrix

Bases: object

Block Matrix .

Constructor.

Parameters:
  • m (std::size_t) –
  • n (std::size_t) –
apply()

Finalize assembly of tensor.

Parameters:mode (std::string) –
Return type:void
get_block()

Get block (const version)

Parameters:
  • i (std::size_t) –
  • j (std::size_t) –
Return type:

std::shared_ptr< const GenericMatrix >
mult()

Matrix-vector product, y = Ax.

Parameters:
Return type:

void
schur_approximation()

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).

Parameters:symmetry (bool) –
Return type:std::shared_ptr< GenericMatrix >
set_block()

Set block.

Parameters:
  • i (std::size_t) –
  • j (std::size_t) –
  • GenericMatrix > m (std::shared_ptr<) –
Return type:

void
size()

Return size of given dimension.

Parameters:dim (std::size_t) –
Return type:std::size_t
str()

Return informal string representation (pretty-print)

Parameters:verbose (bool) –
Return type:std::string
thisown

The membership flag

zero()

Set all entries to zero and keep any sparse structure.

Return type:void