44 typedef typename PreconditionerBase<Number>::VectorType VectorType;
49 inverse_mass_operator.initialize(matrix_free, inverse_mass_operator_data);
51 this->update_needed =
false;
55 vmult(VectorType & dst, VectorType
const & src)
const final
57 inverse_mass_operator.apply(dst, src);
63 inverse_mass_operator.update();
65 this->update_needed =
false;