31 typename LB::Traits::DomainType x;
32 typename LB::Traits::RangeType y;
34 const int size = 1<<dim;
37 Dune::FieldVector<C,size> q1Coefficients;
39 for (
int i=0; i< (1<<dim); i++) {
44 for (
int j=0; j<dim; j++)
45 x[j] = (i & (1<<j)) ? 1.0 : 0.0;
47 f.evaluate(x,y); q1Coefficients[i] = y;
54 Dune::FieldMatrix<C,size,size> mat;
56 for (
int i=0; i<size; i++)
57 for (
int j=0; j<size; j++)
58 mat[i][j] = coefficients_[j][i];
61 Dune::FieldVector<C,size> sol(0);
63 mat.solve(sol,q1Coefficients);
66 for (
int i=0; i<size; i++)
71 std::array<Dune::FieldVector<
typename LB::Traits::RangeFieldType, (1<<dim)> ,(1<<dim)> coefficients_;