Kawa follows the Guile names: logand i1 ... logior i1 ... logxor i1 ... lognot i logtest i j - same as (not (zero? (logand i j))) logbit? i pos logop op x y - Perform one of the 16 bitwise operations of x and y, depending on op. arithmetic-shift i j ash i j (synonym for arithmetic-shift) logcount i integer-length i bit-extract n start end -- --Per Bothner per@xxxxxxxxxxx http://www.bothner.com/per/