X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fextlib%2FhExtlib.mli;h=dae91447741280aa05331a4ab49d44822048392f;hb=0b76904a3f10bfd6390d26172fd6979626bd72f4;hp=22139c291da9cd18036f05c1ffc1b46a2d533489;hpb=6ba6011b7c8cadb8fe328812e0134e27909fb308;p=helm.git

diff --git a/helm/software/components/extlib/hExtlib.mli b/helm/software/components/extlib/hExtlib.mli
index 22139c291..dae914477 100644
--- a/helm/software/components/extlib/hExtlib.mli
+++ b/helm/software/components/extlib/hExtlib.mli
@@ -96,14 +96,27 @@ val sharing_map: ('a -> 'a) -> 'a list -> 'a list
    The second one can be shorter and is padded with a default value.
    This function cannot fail. *)
 val list_iter_default2: ('a -> 'b -> unit) -> 'a list -> 'b -> 'b list -> unit
+(* Checks a predicate in parallel on three lists, the first two having the same
+   length (otherwise it raises Invalid_argument). It stops when the first two
+   lists are empty. The third one can be shorter and is padded with a default value. *)
+val list_forall_default3: ('a -> 'b -> 'c -> bool) -> 'a list -> 'b list -> 'c -> 'c list -> bool
+val list_forall_default3_var: ('a -> 'b -> 'c -> bool) -> 'a list -> 'b list -> 'c -> 'c list -> bool
 
+exception FailureAt of int
 
   (** split_nth n l
    * @returns two list, the first contains at least n elements, the second the
-   * remaining one
+   * remaining ones
    * @raise Failure when List.length l < n *)
 val split_nth: int -> 'a list -> 'a list * 'a list
 
+ (** skip [n] [l] skips the first n elements of l *)
+val list_skip : int -> 'a list -> 'a list
+
+val mk_list: 'a -> int -> 'a list
+
+(* makes the list [start; ...; stop - 1] *)
+val list_seq: int -> int -> int list
 (** {2 Debugging & Profiling} *)
 
 type profiler = { profile : 'a 'b. ('a -> 'b) -> 'a -> 'b }