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| author | Graydon Hoare <[email protected]> | 2010-07-06 23:18:29 -0700 |
|---|---|---|
| committer | Graydon Hoare <[email protected]> | 2010-07-06 23:18:29 -0700 |
| commit | e813388df8df90d0db658e1e745a0a8a4d27ad8c (patch) | |
| tree | 7920e0bc4d38fdb418c452388afda0e4b6f55f63 /src/boot/util | |
| parent | Correct flow-graph wiring for STMT_if. (diff) | |
| download | rust-e813388df8df90d0db658e1e745a0a8a4d27ad8c.tar.xz rust-e813388df8df90d0db658e1e745a0a8a4d27ad8c.zip | |
Numerous bug fixes to typestate algorithm.
Diffstat (limited to 'src/boot/util')
| -rw-r--r-- | src/boot/util/bits.ml | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/boot/util/bits.ml b/src/boot/util/bits.ml index 3114bd66..27bb4902 100644 --- a/src/boot/util/bits.ml +++ b/src/boot/util/bits.ml @@ -67,6 +67,15 @@ let invert (v:t) : unit = done ;; +(* dst = dst - src *) +let difference (dst:t) (src:t) : bool = + invert src; + let b = intersect dst src in + invert src; + b +;; + + let set (v:t) (i:int) (x:bool) : unit = assert (i >= 0); assert (i < v.nbits); |