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1993-09-30
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259 b
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14 lines
(define (fib n)
(if (< n 2)
n
(+ (fib (-1+ n)) (fib (- n 2)))))
(define (success value ticks)
(cons value ticks))
(define (failure new-engine)
new-engine)
(define engine
(make-engine (lambda () (engine-return (fib 15)))))