- int gauss_elimination(void);
- int division_free_elimination(void);
- int fraction_free_elimination(bool det = false);
- int pivot(unsigned ro, bool symbolic=true);
+ int gauss_elimination(const bool det = false);
+ int division_free_elimination(const bool det = false);
+ int fraction_free_elimination(const bool det = false);
+ int pivot(unsigned ro, unsigned co, bool symbolic = true);