libera/#sbcl - IRC Chatlog

20:35:05 stassats (logand #xFF (ash (the fixnum i) (the fixnum c))) can now use modular arithmetic

20:35:44 stassats could be extended to any integers, as long as the shift amount and the mask make it use the bits from the first word

20:36:09 stassats but the modarith machinery doesn't pass the width of the actual mask, always just uses the full word