Added calchash and compare_same_type for symmetries. Necessary for archiving.

[ginac.git] / ginac / symmetry.h

diff --git a/ginac/symmetry.h b/ginac/symmetry.h
index 3720ee727012ba83a8b920fe76b09658316861d1..4168013ed4d391e438154dae129107d4f702c535 100644 (file)
--- a/ginac/symmetry.h
+++ b/ginac/symmetry.h
@@ -84,6 +84,7 @@ public:
 protected:
        void do_print(const print_context & c, unsigned level) const;
        void do_print_tree(const print_tree & c, unsigned level) const;
+       unsigned calchash() const;
 
        // member variables
 private: