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

[ginac.git] / ginac / expairseq.h

diff --git a/ginac/expairseq.h b/ginac/expairseq.h
index 5f707f7679e19e9780da6586d3e0613deca1dd02..f1b4309bea5d00a604aea5d7fc82f939fa98ceac 100644 (file)
--- a/ginac/expairseq.h
+++ b/ginac/expairseq.h
@@ -88,6 +88,9 @@ public:
        ex subs(const exmap & m, unsigned options = 0) const;
        ex conjugate() const;
        bool is_polynomial(const ex & var) const;
+
+       void archive(archive_node& n) const;
+       void read_archive(const archive_node& n, lst& syms);
 protected:
        bool is_equal_same_type(const basic & other) const;
        unsigned return_type() const;