AssemblerBase¶

class dolfin.cpp.fem.AssemblerBase¶

Bases: object

Provide some common functions used in assembler classes.

Constructor.

add_values¶

add_values (bool) Default value is false. This controls whether values are added to the given tensor or if it is zeroed prior to assembly.

Return type:	bool

finalize_tensor¶

finalize_tensor (bool) Default value is true. This controls whether the assembler finalizes the given tensor after assembly is completed by calling A.apply().

Return type:	bool

init_global_tensor()¶

Initialize global tensor

Parameters:	& A (GenericTensor) – (`GenericTensor` &) `GenericTensor` to assemble into [direction=out] Form & a (const) – (`Form` &) `Form` to assemble from [direction=in]
Return type:	void

keep_diagonal¶

keep_diagonal (bool) Default value is false. This controls whether the assembler enures that a diagonal entry exists in an assembled matrix. It may be removed if the matrix is finalised.

Return type:	bool

thisown¶: The membership flag