void i4vec_print ( int n, int a[], string title );
int *i4vec_uniform_ab_new ( int n, int a, int b, int &seed );
void sort_rc ( int n, int &indx, int &i, int &j, int isgn );
void sort_safe_rc ( int n, int &indx, int &i, int &j, int isgn, int &i_save,
  int &j_save, int &k_save, int &l_save, int &n_save );
void timestamp ( );