@Test
public void testVOrthogonal() {

  checkOrthogonal(new SingularValueDecomposition(new DenseMatrix(testSquare)).getV());
  checkOrthogonal(new SingularValueDecomposition(new DenseMatrix(testNonSquare)).getV());
  checkOrthogonal(new SingularValueDecomposition(new DenseMatrix(testNonSquare).transpose()).getV());
}