GenericTensor

class dolfin.cpp.la.GenericTensor(*args, **kwargs)

Bases: dolfin.cpp.la.LinearAlgebraObject

A common interface for arbitrary rank tensors.

add()

Add block of values using global indices.

Parameters:
  • double * block (const) –
  • std::vector< ArrayView< const dolfin::la_index >> & rows (const) –
Return type:

void
add_local()

Add block of values using local indices.

Parameters:
  • double * block (const) –
  • std::vector< ArrayView< const dolfin::la_index >> & rows (const) –
Return type:

void
apply()

Finalize assembly of tensor.

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

Return true if empty.

Return type:bool
factory()

Return linear algebra backend factory.

Return type:GenericLinearAlgebraFactory &
init()

Initialize zero tensor using tensor layout.

Parameters:TensorLayout & tensor_layout (const) –
Return type:void
local_range()

Return local ownership range.

Parameters:dim (std::size_t) –
Return type:std::pair< std::int64_t, std::int64_t >
rank()

Return tensor rank (number of dimensions)

Return type:std::size_t
set_local()

Set block of values using local indices.

Parameters:
  • double * block (const) –
  • dolfin::la_index * num_rows (const) –
  • dolfin::la_index *const * rows (const) –
Return type:

void
size()

Return size of given dimension.

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

The membership flag

zero()

Set all entries to zero and keep any sparse structure.

Return type:void