- logcount nprocedure
- bit-count nprocedure
Returns the number of bits in integer n. If integer is positive, the 1-bits in its binary representation are counted. If negative, the 0-bits in its two's-complement binary representation are counted. If 0, 0 is returned.
Example:
(logcount #b10101010) ; => 4 (logcount 0) ; => 0 (logcount -2) ; => 1