S18GDF Example Program Results X I1(X)-L1(X) 5.000E-01 2.040E-01 0.000E+00 0.000E+00 1.000E+00 3.384E-01 3.000E+00 5.568E-01 6.000E+00 6.169E-01 8.000E+00 6.260E-01 1.000E+01 6.300E-01 1.000E+02 6.366E-01