@Test public void computeHessian() { math.computeHessian(jacLeft,jacRight); DMatrixRMaj found = new DMatrixRMaj(1,1); math.extractDiagonals(found); DMatrixRMaj expected = new DMatrixRMaj(1,1); CommonOps_DSCC.extractDiag(H,expected); assertTrue(MatrixFeatures_DDRM.isIdentical(expected,found,UtilEjml.TEST_F64)); }