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* boot-9.scm (iota): replaced by a tail recursive version.

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(reverse-iota):  removed.
This commit is contained in:
Mikael Djurfeldt 1999-06-05 05:59:26 +00:00
parent fa5518d1fa
commit e69cd299ed
1 changed files with 4 additions and 2 deletions
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6
ice-9/boot-9.scm
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@ -2802,8 +2802,10 @@
;;; {IOTA functions: generating lists of numbers}
(define (reverse-iota n) (if (> n 0) (cons (1- n) (reverse-iota (1- n))) '()))
(define (iota n) (reverse! (reverse-iota n)))
(define (iota n)
(let loop ((count (1- n)) (result '()))
(if (< count 0) result
(loop (1- count) (cons count result)))))
;;; {While}