@Test
public void testSumAbsDiff() throws Exception {

    Assert.assertEquals(MatVecOp.sumAbsDiff(dv, sv), 8.0, TOL);
    Assert.assertEquals(MatVecOp.sumAbsDiff(sv, dv), 8.0, TOL);
    Assert.assertEquals(MatVecOp.sumAbsDiff(sv, sv), 0.0, TOL);
    Assert.assertEquals(MatVecOp.sumAbsDiff(dv, dv), 0.0, TOL);
}