hash value computation for indices takes index dimension into account

[ginac.git] / ginac / idx.h

diff --git a/ginac/idx.h b/ginac/idx.h
index b6e63e0717f8538cc9e9c8c25004c043ed775412..985226d72d441b9c604c478ff801b0e642f410f7 100644 (file)
--- a/ginac/idx.h
+++ b/ginac/idx.h
@@ -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: