#ifndef LINKEDLIST_H
#define LINKEDLIST_H

struct node_t;

typedef struct node_t {
  void *data;
  struct node_t *next;
} node;

typedef struct {
  node *head;
  node *tail;
  unsigned long count;
} linkedlist;

int initLL (linkedlist *);
int addHeadLL (linkedlist *, void *data);
int removeHeadLL (linkedlist *, void **);
int destroyLL (linkedlist *);


#ifdef DEBUG
int printIntLL (linkedlist *);
#endif

#define SUCCESS_LL      0
#define NULL_LIST_LL    1
#define NULL_DATA_LL    2
#define EMPTY_LIST_LL   3
#endif