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[] );
void i4mat_transpose ( int m, int n, int a[] );
void polyomino_print ( int m, int n, int p[], char *label );
void polyomino_transform ( int m, int n, int p[], int rotate, int reflect, 
  int *mq, int *nq, int **q );
void timestamp ( );