diff options
Diffstat (limited to 'mew.scm')
| -rw-r--r-- | mew.scm | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/mew.scm b/mew.scm index a6ac371..f95c0b1 100644 --- a/mew.scm +++ b/mew.scm @@ -18,7 +18,7 @@ odometer one-of op op* per prn proj puts rand range rep - sample scan scan-right sing? search seq set set-at + sample scan scan-right sing? search seq set set-at sgn shuffle shuffle! str slurp tally-accumulator tbl time while @@ -105,6 +105,10 @@ (reexport err) + (define (sgn n) + (cond ((< n 0) -1) + ((> n 0) 1) + (else 0))) ; always return an integer 0, not n (define (inc i) (+ i 1)) |