ikarus/benchmarks/rnrs-benchmarks/ack.ss

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;;; ACK -- One of the Kernighan and Van Wyk benchmarks.
(library (rnrs-benchmarks ack)
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(export main)
(import (rnrs) (rnrs-benchmarks))
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(define (ack m n)
(cond ((= m 0) (+ n 1))
((= n 0) (ack (- m 1) 1))
(else (ack (- m 1) (ack m (- n 1))))))
(define (main . args)
(run-benchmark
"ack"
ack-iters
(lambda (result) (equal? result 4093))
(lambda (m n) (lambda () (ack m n)))
3
9)))