refactoring ...

[helm.git] / helm / software / lambda-delta / src / common / level.ml

diff --git a/helm/software/lambda-delta/src/common/level.ml b/helm/software/lambda-delta/src/common/level.ml
deleted file mode 100644 (file)
index d33c1be..0000000
--- a/helm/software/lambda-delta/src/common/level.ml
+++ /dev/null
@@ -1,37 +0,0 @@
-(*
-    ||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 = int option
-
-(* Interface functions ******************************************************)
-
-let infinite = None
-
-let finite i = Some i
-
-let is_zero xi = 
-   xi = (Some 0)
-
-let is_infinite xi =
-   xi = None
-
-let succ = function
-   | None   -> None
-   | Some i -> Some (succ i)
-
-let pred = function
-   | None              -> None
-   | Some i when i > 0 -> Some (pred i)
-   | _                 -> Some 0
-
-let to_string = function
-   | None   -> ""
-   | Some i -> string_of_int i