# HG changeset patch
# User Peter Kovacs <kpeter@inf.elte.hu>
# Date 2009-08-18 10:24:31
# Node ID 1f08e846df296135814062a8a9c4feb22c76d4ab
# Parent  257e91516e09d8d6be58236c587e3e0199770412

Bug fix in Preflow and Circulation (#307)

diff --git a/lemon/circulation.h b/lemon/circulation.h
--- a/lemon/circulation.h
+++ b/lemon/circulation.h
@@ -453,7 +453,7 @@
     /// \brief Sets the tolerance used by algorithm.
     ///
     /// Sets the tolerance used by algorithm.
-    Circulation& tolerance(const Tolerance& tolerance) const {
+    Circulation& tolerance(const Tolerance& tolerance) {
       _tol = tolerance;
       return *this;
     }
@@ -462,7 +462,7 @@
     ///
     /// Returns a const reference to the tolerance.
     const Tolerance& tolerance() const {
-      return tolerance;
+      return _tol;
     }
 
     /// \name Execution Control
diff --git a/lemon/preflow.h b/lemon/preflow.h
--- a/lemon/preflow.h
+++ b/lemon/preflow.h
@@ -374,7 +374,7 @@
     /// \brief Sets the tolerance used by algorithm.
     ///
     /// Sets the tolerance used by algorithm.
-    Preflow& tolerance(const Tolerance& tolerance) const {
+    Preflow& tolerance(const Tolerance& tolerance) {
       _tolerance = tolerance;
       return *this;
     }
@@ -383,7 +383,7 @@
     ///
     /// Returns a const reference to the tolerance.
     const Tolerance& tolerance() const {
-      return tolerance;
+      return _tolerance;
     }
 
     /// \name Execution Control