From 7cfc4e5146be5666419451bdd516f1f3f264d24a Mon Sep 17 00:00:00 2001
From: Enrico Tassi <gareuselesinge@debian.org>
Date: Sun, 25 Jan 2015 14:42:51 +0100
Subject: Imported Upstream version 8.5~beta1+dfsg

---
 lib/rtree.mli | 44 ++++++++++++++++++++++++--------------------
 1 file changed, 24 insertions(+), 20 deletions(-)

(limited to 'lib/rtree.mli')

diff --git a/lib/rtree.mli b/lib/rtree.mli
index 8b12fee1..0b9424b8 100644
--- a/lib/rtree.mli
+++ b/lib/rtree.mli
@@ -1,12 +1,12 @@
 (************************************************************************)
 (*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
-(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2014     *)
+(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015     *)
 (*   \VV/  **************************************************************)
 (*    //   *      This file is distributed under the terms of the       *)
 (*         *       GNU Lesser General Public License Version 2.1        *)
 (************************************************************************)
 
-(** Type of regular tree with nodes labelled by values of type 'a 
+(** Type of regular tree with nodes labelled by values of type 'a
    The implementation uses de Bruijn indices, so binding capture
    is avoided by the lift operator (see example below) *)
 type 'a t
@@ -49,22 +49,26 @@ val dest_node  : 'a t -> 'a * 'a t array
 (** dest_param is not needed for closed trees (i.e. with no free variable) *)
 val dest_param : 'a t -> int * int
 
-(** Tells if a tree has an infinite branch *)
-val is_infinite : 'a t -> bool
-
-(** [compare_rtree f t1 t2] compares t1 t2 (top-down).
-   f is called on each node: if the result is negative then the
-   traversal ends on false, it is is positive then deeper nodes are
-   not examined, and the traversal continues on respective siblings,
-   and if it is 0, then the traversal continues on sons, pairwise.
-   In this latter case, if the nodes do not have the same number of
-   sons, then the traversal ends on false.
-   In case of loop, the traversal is successful and it resumes on
-   siblings.
- *)
-val compare_rtree : ('a t -> 'b t -> int) -> 'a t -> 'b t -> bool
+(** Tells if a tree has an infinite branch. The first arg is a comparison
+    used to detect already seen elements, hence loops *)
+val is_infinite : ('a -> 'a -> bool) -> 'a t -> bool
 
-val eq_rtree : ('a -> 'a -> bool) -> 'a t -> 'a t -> bool
+(** [Rtree.equiv eq eqlab t1 t2] compares t1 t2 (top-down).
+   If t1 and t2 are both nodes, [eqlab] is called on their labels,
+   in case of success deeper nodes are examined.
+   In case of loop (detected via structural equality parametrized
+   by [eq]), then the comparison is successful. *)
+val equiv :
+  ('a -> 'a -> bool) -> ('a -> 'a -> bool) -> 'a t -> 'a t -> bool
+
+(** [Rtree.equal eq t1 t2] compares t1 and t2, first via physical
+    equality, then by structural equality (using [eq] on elements),
+    then by logical equivalence [Rtree.equiv eq eq] *)
+val equal : ('a -> 'a -> bool) -> 'a t -> 'a t -> bool
+
+val inter : ('a -> 'a -> bool) -> ('a -> 'a -> 'a option) -> 'a -> 'a t -> 'a t -> 'a t
+
+val incl : ('a -> 'a -> bool) -> ('a -> 'a -> 'a option) -> 'a -> 'a t -> 'a t -> bool
 
 (** Iterators *)
 
@@ -72,9 +76,9 @@ val map : ('a -> 'b) -> 'a t -> 'b t
 
 (** [(smartmap f t) == t] if [(f a) ==a ] for all nodes *)
 val smartmap : ('a -> 'a) -> 'a t -> 'a t
-val fold : (bool -> 'a t -> ('a t -> 'b) -> 'b) -> 'a t -> 'b
-val fold2 :
-  (bool -> 'a t -> 'b -> ('a t -> 'b -> 'c) -> 'c) -> 'a t -> 'b -> 'c
 
 (** A rather simple minded pretty-printer *)
 val pp_tree : ('a -> Pp.std_ppcmds) -> 'a t -> Pp.std_ppcmds
+
+val eq_rtree : ('a -> 'a -> bool) -> 'a t -> 'a t -> bool
+(** @deprecated Same as [Rtree.equal] *)
-- 
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