int i4_max ( int i1, int i2 );
int i4_min ( int i1, int i2 );
void i4mat_print ( int m, int n, int a[], string title );
void i4mat_print_some ( int m, int n, int a[], int ilo, int jlo, int ihi, 
  int jhi, string title );
void i4vec_print ( int n, int a[], string title );
int i4vec_sum ( int n, int a[] );
double r8_uniform_01 ( int *seed );
void rcont2 ( int nrow, int ncol, int nrowt[], int ncolt[], bool *key, 
  int *seed, int matrix[],  int *ierror );