clojure.core/bit-and-not

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Type: function Added: Clojure 1.0 Examples: 3 Runnable: 3

([x y] [x y & more])

Bitwise and with complement

Examples

by zmila on 2010-07-28 ▶

(bit-and-not 2r1100 2r1001) ; (and X (not Y)) 4 ;; 4 = 2r0100

by phreed on 2014-10-28 ▶

;; here is the truth table for AND-NOT (which is not the same as NAND) (Integer/toBinaryString (bit-and-not 2r1100 2r1010) ) ;;=> "100" ;; or 2r0100 ;; NAND would be... (Integer/toBinaryString (bit-not (bit-and 2r1100 2r1010)) ) ;;=> "11111111111111111111111111110111" ;; which is clearly not the same ;; this operation is material non-implication (= (bit-and-not 2r1100 2r1010) (bit-and 2r1100 (bit-not 2r1010)) ) ;;=> true

by bhlieberman on 2022-10-28 ▶

;;flip the bits of a seq (map (fn [n] (bit-and-not 0xff n)) (range 1 10)) ; ~n & 0xff ;;=> (254 253 252 251 250 249 248 247 246)

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