From 9043add656177eeac1491a73d2f3ab92bec0013c Mon Sep 17 00:00:00 2001
From: Benjamin Barenblat <bbaren@debian.org>
Date: Sat, 29 Dec 2018 14:31:27 -0500
Subject: Imported Upstream version 8.8.2

---
 clib/hMap.mli | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 clib/hMap.mli

(limited to 'clib/hMap.mli')

diff --git a/clib/hMap.mli b/clib/hMap.mli
new file mode 100644
index 00000000..b26d0e04
--- /dev/null
+++ b/clib/hMap.mli
@@ -0,0 +1,30 @@
+(************************************************************************)
+(*         *   The Coq Proof Assistant / The Coq Development Team       *)
+(*  v      *   INRIA, CNRS and contributors - Copyright 1999-2018       *)
+(* <O___,, *       (see CREDITS file for the list of authors)           *)
+(*   \VV/  **************************************************************)
+(*    //   *    This file is distributed under the terms of the         *)
+(*         *     GNU Lesser General Public License Version 2.1          *)
+(*         *     (see LICENSE file for the text of the license)         *)
+(************************************************************************)
+
+module type HashedType =
+sig
+  type t
+  val compare : t -> t -> int
+  (** Total ordering *)
+  val hash : t -> int
+  (** Hashing function compatible with [compare], i.e. [compare x y = 0] implies
+      [hash x = hash y]. *)
+end
+
+(** Hash maps are maps that take advantage of having a hash on keys. This is
+    essentially a hash table, except that it uses purely functional maps instead
+    of arrays.
+
+    CAVEAT: order-related functions like [fold] or [iter] do not respect the
+    provided order anymore! It's your duty to do something sensible to prevent
+    this if you need it. In particular, [min_binding] and [max_binding] are now
+    made meaningless.
+*)
+module Make(M : HashedType) : CMap.ExtS with type key = M.t
-- 
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