Class GooseFEM::MatrixDiagonal

class MatrixDiagonal : public GooseFEM::MatrixBase<MatrixDiagonal>, public GooseFEM::MatrixDiagonalBase<MatrixDiagonal>

Diagonal matrix.

Warning: assemble() ignores all off-diagonal terms.

See Vector() for bookkeeping definitions.

Public Functions

template<class C, class D>
inline MatrixDiagonal(const C &conn, const D &dofs)

Constructor.

Template Parameters

• C – e.g. array_type::tensor<size_t, 2>

• D – e.g. array_type::tensor<size_t, 2>

Parameters

• conn – connectivity [nelem, nne].

• dofs – DOFs per node [nnode, ndim].

inline void set(const array_type::tensor<double, 1> &A)

Set all (diagonal) matrix components.

Parameters

A – The matrix [ndof].

inline const array_type::tensor<double, 1> &Todiagonal() const

Copy as diagonal matrix.

Returns

[ndof].

inline const array_type::tensor<double, 1> &data() const

Underlying matrix.

Returns

[ndof].