nag_opt_bounds_deriv (e04kbc) Example Program Optional Parameters Following options for e04kbc are read by e04xyc. begin e04kbc print_level = Nag_Soln_Iter_Full /* Print full iterations and solution. */ max_iter = 40 /* Perform maximum of 40 iterations */ step_max = 4.0 /* Estimate minimum within 4 units of start */ f_est = 0.0 /* Zero is a lower bound on the function value */ end