X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Flambda-delta%2Fsrc%2Fcommon%2Flevel.mli;fp=helm%2Fsoftware%2Flambda-delta%2Fsrc%2Fcommon%2Flevel.mli;h=70a49d5e8a6814ad481796accc82bb465d36a8ec;hb=fa9e69af2ad5a22692f6fdd555d37bc6d80c5ad9;hp=0000000000000000000000000000000000000000;hpb=22fd9c98a22929f0319286c0693fcdaee43a72df;p=helm.git

diff --git a/helm/software/lambda-delta/src/common/level.mli b/helm/software/lambda-delta/src/common/level.mli
new file mode 100644
index 000000000..70a49d5e8
--- /dev/null
+++ b/helm/software/lambda-delta/src/common/level.mli
@@ -0,0 +1,26 @@
+(*
+    ||M||  This file is part of HELM, an Hypertextual, Electronic        
+    ||A||  Library of Mathematics, developed at the Computer Science     
+    ||T||  Department, University of Bologna, Italy.                     
+    ||I||                                                                
+    ||T||  HELM is free software; you can redistribute it and/or         
+    ||A||  modify it under the terms of the GNU General Public License   
+    \   /  version 2 or (at your option) any later version.              
+     \ /   This software is distributed as is, NO WARRANTY.              
+      V_______________________________________________________________ *)
+
+type level
+
+val infinite: level
+
+val finite: int -> level
+
+val is_zero: level -> bool
+
+val is_infinite: level -> bool
+
+val succ: level -> level
+
+val pred: level -> level
+
+val to_string: level -> string