05/07/23 00:19:34
(define (pow2 x n)
(let loop ((x x) (n n) (r 1))
(if (= n 0) r
(loop (* x x) (quotient n 2) (if (even? n) r (* r x))))))
05/07/23 00:19:34
(define (pow2 x n)
(let loop ((x x) (n n) (r 1))
(if (= n 0) r
(loop (* x x) (quotient n 2) (if (even? n) r (* r x))))))