radix_to_skip
skip = radix_to_skip(radix);
skip = radix_to_skip(radix);
nodes += radix_to_skip(radix * BLIST_RADIX);
scan[-digit * radix_to_skip(radix)].bm_bitmap ^=
skip = radix_to_skip(radix);
skip = radix_to_skip(radix);
skip = radix_to_skip(radix);