public void testElements() { DenseMatrix A = rand(5, 8); DenseMatrix B = rand(5, 8); assertTrue(zeros(5, 8).equals(A.sub(A))); assertTrue(A.equals(A.add(A).div(2))); assertTrue(ones(5, 8).equals(A.div(A))); assertTrue(A.equals(A.mul(A).div(A))); assertTrue(A.neg().abs().equals(A)); assertTrue(A.neg().add(A).equals(zeros(5, 8))); }