double *box_behnken ( int dim_num, int x_num, double range[] );
int box_behnken_size ( int dim_num );
int i4_max ( int i1, int i2 );
int i4_min ( int i1, int i2 );
int i4_power ( int i, int j );
void r8mat_transpose_print ( int m, int n, double a[], char *title );
void r8mat_transpose_print_some ( int m, int n, double a[], int ilo, int jlo, 
  int ihi, int jhi, char *title );
void r8mat_write ( char *output_filename, int m, int n, double table[] );
void timestamp ( void );