nag_cumul_normal (s15abc) Example Program Results
     x           y
  -2.000e+01   2.754e-89
  -1.000e+00   1.587e-01
   0.000e+00   5.000e-01
   1.000e+00   8.413e-01
   2.000e+00   9.772e-01
   2.000e+01   1.000e+00