- Iterator::index() should be const

- fixed FlatIterator::equals(...)

[[Imported from SVN: r2461]]

common/fvector.hh

@@ -414,7 +414,7 @@ namespace Dune {
     }
 
     //! return index
-    DifferenceType index ()
+    DifferenceType index () const
     {
       return this->position_;
     }
@@ -467,14 +467,14 @@ namespace Dune {
     }
     bool equals (const FlatIterator & fit) const
     {
-      return fit.it == it;
+      return fit.it == it && fit.bit == bit;
     }
     field_type& dereference() const
     {
       return *bit;
     }
     //! return index
-    DifferenceType index ()
+    DifferenceType index () const
     {
       return bit.index();
     }
@@ -510,7 +510,7 @@ namespace Dune {
       return *it;
     }
     //! return index
-    DifferenceType index ()
+    DifferenceType index () const
     {
       return it.index();
     }
@@ -544,7 +544,7 @@ namespace Dune {
       return *it;
     }
     //! return index
-    DifferenceType index ()
+    DifferenceType index () const
     {
       return it.index();
     }