C02AMF Example Program Results Roots of cubic equation Error estimates (machine-dependent) z = -2.0000E+00 +3.0000E+00*i 1.7E-15 z = 1.0000E+00 -2.0000E+00*i 3.6E-15 z = 3.0000E+00 -4.0000E+00*i 3.7E-15