int i4_max ( int i1, int i2 );
int i4_min ( int i1, int i2 );
int i4_to_l4 ( int i4 );
int *i4_to_l4vec ( int i4, int n );
int l4_to_i4 ( int l4 );
char *l4_to_s ( int l4 );
int l4_uniform ( int *seed );
int l4_xnor ( int l1, int l2 );
int l4_xor ( int l1, int l2 );
void l4mat_print ( int m, int n, int a[], char *title );
void l4mat_print_some ( int m, int n, int a[], int ilo, int jlo, int ihi, 
  int jhi, char *title );
void l4mat_transpose_print ( int m, int n, int a[], char *title );
void l4mat_transpose_print_some ( int m, int n, int a[], int ilo, int jlo, 
  int ihi, int jhi, char *title );
int *l4mat_uniform_new ( int m, int n, int *seed );
void l4vec_next ( int n, int l4vec[] );
void l4vec_print ( int n, int a[], char *title );
int *l4vec_uniform_new ( int n, int *seed );
int s_to_l4 ( char *s );
void timestamp ( );