NAG Library Manual, Mark 30.1
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NAG CL Interface Introduction
Example description

nag_specfun_gamma_incomplete_vector (s14bnc) Example Program Results

     a           x           p           q          ivalid

   2.000e+00   3.000e+00   8.009e-01   1.991e-01    0
   7.000e+00   1.000e+00   8.324e-05   9.999e-01    0
   5.000e-01   9.900e+01   1.000e+00   5.705e-45    0
   2.000e+01   2.100e+01   6.157e-01   3.843e-01    0
   2.100e+01   2.000e+01   4.409e-01   5.591e-01    0