nag_specfun_bessel_y1_real_vector (s17arc) Example Program Results x f ivalid 5.000e-01 -1.471e+00 0 1.000e+00 -7.812e-01 0 3.000e+00 3.247e-01 0 6.000e+00 -1.750e-01 0 8.000e+00 -1.581e-01 0 1.000e+01 2.490e-01 0 1.000e+03 -2.478e-02 0