nag_specfun_bessel_k0_scaled_vector (s18cqc) Example Program Results x f ivalid 4.000e-01 1.663e+00 0 6.000e-01 1.417e+00 0 1.400e+00 9.881e-01 0 2.500e+00 7.595e-01 0 1.000e+01 3.916e-01 0 1.000e+03 3.963e-02 0