ex eval() const override;
ex evalm() const override;
ex series(const relational & r, int order, unsigned options = 0) const override;
- ex normal(exmap & repl, exmap & rev_lookup) const override;
+ ex normal(exmap & repl, exmap & rev_lookup, lst & modifier) const override;
numeric integer_content() const override;
ex smod(const numeric &xi) const override;
numeric max_coefficient() const override;