From: Andrea Asperti <andrea.asperti@unibo.it>
Date: Wed, 2 Dec 2009 09:45:42 +0000 (+0000)
Subject: Added a boolean test function to discriminate equations from predicates
X-Git-Tag: make_still_working~3189
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=546e74b52ee86a69cb735c699098dbf64274cf54;p=helm.git

Added a boolean test function to discriminate equations from predicates
---

diff --git a/helm/software/components/ng_paramodulation/terms.ml b/helm/software/components/ng_paramodulation/terms.ml
index 3947107ea..61b027d72 100644
--- a/helm/software/components/ng_paramodulation/terms.ml
+++ b/helm/software/components/ng_paramodulation/terms.ml
@@ -46,6 +46,11 @@ type 'a unit_clause =
 
 type 'a passive_clause = int * 'a unit_clause (* weight * equation *)
 
+let is_eq_clause (_,l,_,_) =
+  match l with
+    | Equation _ -> true
+    | Predicate _ -> false
+;;
 
 let vars_of_term t =
   let rec aux acc = function
diff --git a/helm/software/components/ng_paramodulation/terms.mli b/helm/software/components/ng_paramodulation/terms.mli
index 0146dba2c..03bdddb89 100644
--- a/helm/software/components/ng_paramodulation/terms.mli
+++ b/helm/software/components/ng_paramodulation/terms.mli
@@ -52,6 +52,7 @@ type 'a unit_clause =
 
 type 'a passive_clause = int * 'a unit_clause (* weight * equation *)
 
+val is_eq_clause : 'a unit_clause -> bool
 val vars_of_term : 'a foterm -> int list
 
 module M : Map.S with type key = int