@Override
public Matrix cdiv(Matrix m) {
Matrix copy = new InMemoryJBlasMatrix(this.getRowsNum(),
this.getColumnsNum());
copy.copy(this);
if (this.getColumnsNum() == m.getColumnsNum() && m.getRowsNum() == 1) {
for (int i = 0; i < this.getRowsNum(); i++) {
for (int j = 0; j < this.getColumnsNum(); j++) {
assert m.get(0, i) == 0.0;
copy.put(i, j, copy.get(i, j) / m.get(0, j));