ex & let_op(int i);
ex eval(int level=0) const;
ex evalf(int level=0) const;
+ ex normal(lst &sym_lst, lst &repl_lst, int level=0) const;
ex simplify_ncmul(const exvector & v) const;
protected:
int compare_same_type(const basic & other) const;
unsigned return_type_tinfo(void) const;
// new virtual functions which can be overridden by derived classes
- // none
+public:
+ virtual ex lhs(void) const;
+ virtual ex rhs(void) const;
// non-virtual functions in this class
public: