ex series(const relational & s, int order, unsigned options = 0) const override;
ex subs(const exmap & m, unsigned options = 0) const override;
bool has(const ex & other, unsigned options = 0) const override;
- ex normal(exmap & repl, exmap & rev_lookup, int level = 0) const override;
+ ex normal(exmap & repl, exmap & rev_lookup) const override;
ex to_rational(exmap & repl) const override;
ex to_polynomial(exmap & repl) const override;
ex conjugate() const override;