Assembler.h

Note

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

class Assembler

Parent class(es)

• AssemblerBase

This class provides automated assembly of linear systems, or more generally, assembly of a sparse tensor from a given variational form.

Subdomains for cells and facets may be specified by assigning subdomain indicators specified by MeshFunction to the Form being assembled:

form.dx = cell_domains
form.ds = exterior_facet_domains
form.dS = interior_facet_domains

Assembler()

Constructor

void assemble(GenericTensor& A, const Form& a)

Assemble tensor from given form

Arguments

A (GenericTensor)

The tensor to assemble.

a (Form)

The form to assemble the tensor from.

void assemble_cells(GenericTensor& A, const Form& a, UFC& ufc, std::shared_ptr<const MeshFunction<std::size_t>> domains, std::vector<double>* values)

Assemble tensor from given form over cells. This function is provided for users who wish to build a customized assembler.

void assemble_exterior_facets(GenericTensor& A, const Form& a, UFC& ufc, std::shared_ptr<const MeshFunction<std::size_t>> domains, std::vector<double>* values)

Assemble tensor from given form over exterior facets. This function is provided for users who wish to build a customized assembler.

void assemble_interior_facets(GenericTensor& A, const Form& a, UFC& ufc, std::shared_ptr<const MeshFunction<std::size_t>> domains, std::shared_ptr<const MeshFunction<std::size_t>> cell_domains, std::vector<double>* values)

Assemble tensor from given form over interior facets. This function is provided for users who wish to build a customized assembler.

void assemble_vertices(GenericTensor& A, const Form& a, UFC& ufc, std::shared_ptr<const MeshFunction<std::size_t>> domains)

Assemble tensor from given form over vertices. This function is provided for users who wish to build a customized assembler.