void i4mat_copy ( int m, int n, int a1[], int a2[] );
int *i4mat_copy_new ( int m, int n, int a1[] );
void i4mat_flip_cols ( int m, int n, int a[] );
void i4mat_flip_rows ( int m, int n, int a[] );
int i4mat_sum ( int m, int n, int a[] );
void i4mat_transpose ( int m, int n, int a[] );
int *i4rows_copy_new ( int m, int n, int a1[] );
int *i4rows_zeros_new ( int m, int n );
void i4vec_copy ( int n, int a1[], int a2[] );
void pentomino_matrix ( char name, int &p_m, int &p_n, int **p );
void pentomino_plot ( int p_m, int p_n, int p[], string label );
void polyomino_condense ( int mp, int np, int p[], int &mq, int &nq, int **q );
int *polyomino_embed_list ( int mr, int nr, int r[], int mp, int np, int p[], 
  int number );
int polyomino_embed_number ( int mr, int nr, int r[], int mp, int np, int p[] );
void polyomino_enumerate_chiral ( int &n_data, int &order, 
  long long int &number );
void polyomino_enumerate_fixed ( int &n_data, int &order, 
  long long int &number );
void polyomino_enumerate_free ( int &n_data, int &order, 
  long long int &number );
int *polyomino_index ( int m, int n, int p[] );
void polyomino_lp_write ( string filename, string label, int m, int n, int a[], 
  int b[] );
void polyomino_print ( int m, int n, int p[], string label );
void polyomino_transform ( int m, int n, int p[], int rotate, int reflect, 
  int &mq, int &nq, int **q );
void timestamp ( );