nag_quad_1d_fin_smooth (d01bdc) Example Program Results (User-supplied callback f, first invocation.) a - lower limit of integration = 0.0000 b - upper limit of integration = 1.0000 epsabs - absolute accuracy requested = 0.00e+00 epsrel - relative accuracy requested = 1.00e-04 result - approximation to the integral = -0.03183 abserr - estimate to the absolute error = 1.34e-11