/* Since we use "& size" instead of "%size" and since the size was doubled, each bucklet of this cell must either:
- stay in cell i (ie, currcell)
- go to the cell i+oldsize (ie, twincell) */
/* Since we use "& size" instead of "%size" and since the size was doubled, each bucklet of this cell must either:
- stay in cell i (ie, currcell)
- go to the cell i+oldsize (ie, twincell) */