- Another bug in get_sort_family_of (sort-polymorphism of constants and

  inductive types was not taken into account).
- Virtually extended tauto to 
  - support arbitrary-length disjunctions and conjunctions,
  - support arbitrary complex forms of disjunctions and
    conjunctions when in the contravariant of an implicative hypothesis,
  - stick with the purely propositional fragment and not apply reflexivity.
  This is virtual in the sense that it is not activated since it breaks 
  compatibility with the existing tauto.
- Modified the notion of conjunction and unit type used in hipattern in a 
  way that is closer to the intuitive meaning (forbid dependencies 
  between parameters in conjunction; forbid indices in unit types).
- Investigated how far "iff" could be turned into a direct inductive
  definition; modified tauto.ml4 so that it works with the current and
  the alternative definition.
- Fixed a bug in the error message from lookup_eliminator.
- Other minor changes.



git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11721 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/util.ml b/lib/util.ml
index 3b04e2574..b7aa1fc0e 100644
--- a/lib/util.ml
+++ b/lib/util.ml
@@ -946,6 +946,13 @@ let array_for_all4 f v1 v2 v3 v4 =
   lv1 = Array.length v4 &&
     allrec (pred lv1) 
 
+let array_for_all_i f i v = 
+  let rec allrec i = function
+    | -1 -> true
+    | n -> (f i v.(n)) && (allrec (i-1) (n-1))
+  in 
+  allrec i ((Array.length v)-1) 
+
 let array_hd v = 
   match Array.length v with
     | 0 -> failwith "array_hd"