int division_free_elimination(void);
int fraction_free_elimination(bool det = false);
int pivot(unsigned ro, bool symbolic=true);
-private: // FIXME: these should be obsoleted
- void ffe_swap(unsigned r1, unsigned c1, unsigned r2 ,unsigned c2);
- void ffe_set(unsigned r, unsigned c, ex e);
- ex ffe_get(unsigned r, unsigned c) const;
// member variables
protected: