void add(FieldField< Field1, typename typeOfSum< Type1, Type2 >::type > &f, const FieldField< Field1, Type1 > &f1, const FieldField< Field2, Type2 > &f2)
virtual void updateInterfaceMatrix(solveScalarField &result, const bool add, const lduAddressing &lduAddr, const label patchId, const solveScalarField &psiInternal, const scalarField &coeffs, const direction cmpt, const Pstream::commsTypes commsType) const
Update result field based on interface functionality.