Autotuning with multiharmonic perturbations. II. Computational improvements and identification of arbitrary critical points

Following on from the set of identification schemes discussed in Part I, this paper develops methods for added computational improvements to these schemes and generalises the techniques to identification of arbitrary critical points other than -180 degrees. A numerical example is given in the context of identifying the -135 degree point used in the Kessler-Landau-Voda tuning method