34 lines
842 B
Scheme
34 lines
842 B
Scheme
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;;; STRING -- One of the Kernighan and Van Wyk benchmarks.
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(library (r6rs-benchmarks string)
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(export main)
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(import (r6rs) (r6rs-benchmarks))
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(define s "abcdef")
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(define (grow)
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(set! s (string-append "123" s "456" s "789"))
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(set! s (string-append
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(substring s (quotient (string-length s) 2) (string-length s))
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(substring s 0 (+ 1 (quotient (string-length s) 2)))))
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s)
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(define (trial n)
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(do ((i 0 (+ i 1)))
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((> (string-length s) n) (string-length s))
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(grow)))
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(define (my-try n)
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(do ((i 0 (+ i 1)))
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((>= i 10) (string-length s))
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(set! s "abcdef")
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(trial n)))
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(define (main . args)
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(run-benchmark
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"string"
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string-iters
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(lambda (result) (equal? result 524278))
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(lambda (n) (lambda () (my-try n)))
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500000)))
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