friend class ncmul;
friend class power;
-// member functions
-
- // default constructor, destructor, copy constructor assignment operator and helpers
-public:
- add();
- ~add();
- add(const add & other);
- const add & operator=(const add & other);
-protected:
- void copy(const add & other);
- void destroy(bool call_parent);
-
// other constructors
public:
add(const ex & lh, const ex & rh);