nag_specfun_bessel_i1_real (s18afc) Example Program Results x y 0.000e+00 0.000e+00 5.000e-01 2.579e-01 1.000e+00 5.652e-01 3.000e+00 3.953e+00 6.000e+00 6.134e+01 8.000e+00 3.999e+02 1.000e+01 2.671e+03 1.500e+01 3.281e+05 2.000e+01 4.245e+07 -1.000e+00 -5.652e-01