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(define size 500000)
(define (f1 x)
(let ((y x))
(do ((j 0 (+ j 1)))
((= j 1))
(do ((i 0 (+ i 1)))
((= i size))
(let-temporarily ((y 32))
(if (not (= y 32))
(format *stderr* "temp y: ~A~%" y)))
(if (not (= y x))
(format *stderr* "y: ~A~%" y))))))
(f1 1)
(define-macro (m2 a b) `(+ ,a ,@b 1))
(define (f2)
(let ((x 2)
(y 0))
(do ((j 0 (+ j 1)))
((= j 1))
(do ((i 0 (+ i 1)))
((= i size))
(set! y (m2 x (x x)))
(if (not (= y (+ (* 3 x) 1)))
(format *stderr* "y: ~A~%" y))))))
(f2)
(define-expansion (m3 a b) `(+ ,a ,@b 1))
(define (f3)
(let ((x 2)
(y 0))
(do ((j 0 (+ j 1)))
((= j 1))
(do ((i 0 (+ i 1)))
((= i size))
(set! y (m3 x (x x)))
(if (not (= y (+ (* 3 x) 1)))
(format *stderr* "y: ~A~%" y))))))
(f3)
(exit)
|
