ex evalf() const override;
ex series(const relational & r, int order, unsigned options = 0) const override;
ex subs(const exmap & m, 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;
ex expand(unsigned options = 0) const override;
ex conjugate() const override;
ex real_part() const override;