ex coeff(const ex &s, int n = 1) const override;
ex collect(const ex &s, bool distributed = false) const override;
ex eval() const override;
- ex evalf(int level=0) const override;
+ 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, int level = 0) const override;