Don't force every algebraic class to implement archiving/unarchiving.

[ginac.git] / ginac / mul.h

diff --git a/ginac/mul.h b/ginac/mul.h
index a11b29b5fd0f3e39ce8966bc400ef880c8a9ee10..bfcd886bbacd1b0d6443316ef91f507729f3b7ab 100644 (file)
--- a/ginac/mul.h
+++ b/ginac/mul.h
@@ -98,6 +98,7 @@ protected:
        static bool can_be_further_expanded(const ex & e);
        std::auto_ptr<epvector> expandchildren(unsigned options) const;
 };
+GINAC_DECLARE_UNARCHIVER(mul);
 
 } // namespace GiNaC