In <1170361512.204099.191740 at a75g2000cwd.googlegroups.com>, Krypto wrote: > The correct answer as told to me by a person is > > (N>>3) + ((N-7*(N>>3))>>3) How could it be correct if it uses `-`? You ruled out `-` and `/` in your first post. Ciao, Marc 'BlackJack' Rintsch