[MLton-commit] r5761

[Vesa Karvonen]

Avoid overflow check.
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U   mltonlib/trunk/com/ssh/extended-basis/unstable/detail/basic.sml

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Modified: mltonlib/trunk/com/ssh/extended-basis/unstable/detail/basic.sml
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--- mltonlib/trunk/com/ssh/extended-basis/unstable/detail/basic.sml	2007-07-11 15:05:16 UTC (rev 5760)
+++ mltonlib/trunk/com/ssh/extended-basis/unstable/detail/basic.sml	2007-07-11 15:56:57 UTC (rev 5761)
@@ -11,6 +11,11 @@
    fun failing m _ = fail m
    fun raising e _ = raise e
    fun recur x = Fn.flip Fn.fix x
-   fun repeat f n x = if n = 0 then x else repeat f (n-1) (f x)
+   fun repeat f n x =
+       if n < 0
+       then raise Domain
+       else recur (Word.fromInt n, x) (fn lp =>
+               fn (0w0, x) => x
+                | (n,   x) => lp (n-0w1, f x))
    fun undefined _ = fail "undefined"
 end