X-Git-Url: https://svn.cri.ensmp.fr/git/linpy.git/blobdiff_plain/cd2197879049a836b02a331adf0a00c0b87fe043..e2a9aaf40294f77a0c7c6fbccf6fd968b6355c90:/pypol/polyhedra.py

diff --git a/pypol/polyhedra.py b/pypol/polyhedra.py
index a6adeda..63ecb64 100644
--- a/pypol/polyhedra.py
+++ b/pypol/polyhedra.py
@@ -85,6 +85,13 @@ class Polyhedron(Domain):
     def aspolyhedron(self):
         return self
 
+    def subs(self, symbol, expression=None):
+        equalities = [equality.subs(symbol, expression)
+            for equality in self.equalities]
+        inequalities = [inequality.subs(symbol, expression)
+            for inequality in self.inequalities]
+        return Polyhedron(equalities, inequalities)
+
     @classmethod
     def _fromislbasicset(cls, islbset, symbols):
         islconstraints = islhelper.isl_basic_set_constraints(islbset)