DWT for armv7m also uses base+power-of-2-mask. I was in the process of creating some code [1] for calculating the best possible power-of-2-mask (or set of masks

DWT for armv7m also uses base+power-of-2-mask. I was in the process of creating some code [1] for calculating the best possible power-of-2-mask (or set of masks + bases) given a limit, but never completed it. 1: https://github.com/jmesmon/ccan/blob/maskn/ccan/maskn/maskn.c https://github.com/jmesmon/ccan/blob/maskn/ccan/maskn/maskn....