nag_exp_integral (s13aac) Example Program Results x y 2.000e+00 4.890e-02 9.000e+00 1.245e-05 -1.000e+00 -1.895e+00 -1.000e+03 -1.798e+308 Error from nag_exp_integral (s13aac). NE_REAL_ARG_LE: The evaluation has been abandoned due to the likelihood of overflow. The argument x < -x_hi.