hash value computation for indices takes index dimension into account
[ginac.git] / ginac / idx.h
index b6e63e0..985226d 100644 (file)
@@ -59,6 +59,7 @@ public:
 protected:
        ex derivative(const symbol & s) const;
        bool match_same_type(const basic & other) const;
+       unsigned calchash() const;
 
        // new virtual functions in this class
 public: