ikarus/benchmarks/r6rs-benchmarks/puzzle.ss

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2007-06-13 10:49:54 -04:00
;;; PUZZLE -- Forest Baskett's Puzzle benchmark, originally written in Pascal.
(library (r6rs-benchmarks puzzle)
(export main)
(import (r6rs) (r6rs-benchmarks))
(define (my-iota n)
(do ((n n (- n 1))
(list '() (cons (- n 1) list)))
((zero? n) list)))
(define size 511)
(define classmax 3)
(define typemax 12)
(define *iii* 0)
(define *kount* 0)
(define *d* 8)
(define *piececount* (make-vector (+ classmax 1) 0))
(define *class* (make-vector (+ typemax 1) 0))
(define *piecemax* (make-vector (+ typemax 1) 0))
(define *puzzle* (make-vector (+ size 1)))
(define *p* (make-vector (+ typemax 1)))
(define (fit i j)
(let ((end (vector-ref *piecemax* i)))
(do ((k 0 (+ k 1)))
((or (> k end)
(and (vector-ref (vector-ref *p* i) k)
(vector-ref *puzzle* (+ j k))))
(if (> k end) #t #f)))))
(define (place i j)
(let ((end (vector-ref *piecemax* i)))
(do ((k 0 (+ k 1)))
((> k end))
(cond ((vector-ref (vector-ref *p* i) k)
(vector-set! *puzzle* (+ j k) #t)
#t)))
(vector-set! *piececount*
(vector-ref *class* i)
(- (vector-ref *piececount* (vector-ref *class* i)) 1))
(do ((k j (+ k 1)))
((or (> k size) (not (vector-ref *puzzle* k)))
(if (> k size) 0 k)))))
(define (puzzle-remove i j)
(let ((end (vector-ref *piecemax* i)))
(do ((k 0 (+ k 1)))
((> k end))
(cond ((vector-ref (vector-ref *p* i) k)
(vector-set! *puzzle* (+ j k) #f)
#f)))
(vector-set! *piececount*
(vector-ref *class* i)
(+ (vector-ref *piececount* (vector-ref *class* i)) 1))))
(define (trial j)
(let ((k 0))
(call-with-current-continuation
(lambda (return)
(do ((i 0 (+ i 1)))
((> i typemax) (set! *kount* (+ *kount* 1)) #f)
(cond
((not
(zero?
(vector-ref *piececount* (vector-ref *class* i))))
(cond
((fit i j)
(set! k (place i j))
(cond
((or (trial k) (zero? k))
(set! *kount* (+ *kount* 1))
(return #t))
(else (puzzle-remove i j))))))))))))
(define (definePiece iclass ii jj kk)
(let ((index 0))
(do ((i 0 (+ i 1)))
((> i ii))
(do ((j 0 (+ j 1)))
((> j jj))
(do ((k 0 (+ k 1)))
((> k kk))
(set! index (+ i (* *d* (+ j (* *d* k)))))
(vector-set! (vector-ref *p* *iii*) index #t))))
(vector-set! *class* *iii* iclass)
(vector-set! *piecemax* *iii* index)
(cond ((not (= *iii* typemax))
(set! *iii* (+ *iii* 1))))))
(define (start)
(set! *kount* 0)
(do ((m 0 (+ m 1)))
((> m size))
(vector-set! *puzzle* m #t))
(do ((i 1 (+ i 1)))
((> i 5))
(do ((j 1 (+ j 1)))
((> j 5))
(do ((k 1 (+ k 1)))
((> k 5))
(vector-set! *puzzle* (+ i (* *d* (+ j (* *d* k)))) #f))))
(do ((i 0 (+ i 1)))
((> i typemax))
(do ((m 0 (+ m 1)))
((> m size))
(vector-set! (vector-ref *p* i) m #f)))
(set! *iii* 0)
(definePiece 0 3 1 0)
(definePiece 0 1 0 3)
(definePiece 0 0 3 1)
(definePiece 0 1 3 0)
(definePiece 0 3 0 1)
(definePiece 0 0 1 3)
(definePiece 1 2 0 0)
(definePiece 1 0 2 0)
(definePiece 1 0 0 2)
(definePiece 2 1 1 0)
(definePiece 2 1 0 1)
(definePiece 2 0 1 1)
(definePiece 3 1 1 1)
(vector-set! *piececount* 0 13)
(vector-set! *piececount* 1 3)
(vector-set! *piececount* 2 1)
(vector-set! *piececount* 3 1)
(let ((m (+ (* *d* (+ *d* 1)) 1))
(n 0))
(cond ((fit 0 m) (set! n (place 0 m)))
(else (begin (newline) (display "Error."))))
(if (trial n)
*kount*
#f)))
(define (main . args)
(run-benchmark
"puzzle"
puzzle-iters
(lambda (result) (equal? result 2005))
(lambda () (lambda () (start)))))
(for-each (lambda (i) (vector-set! *p* i (make-vector (+ size 1))))
(my-iota (+ typemax 1))))