/*
 * list.h
 *
 * by Gary Wong, 1996
 */

#ifndef _LIST_H_
#define _LIST_H_

typedef struct _list {
  struct _list* plPrev;
  struct _list* plNext;
  void* p;
} list;

extern int ListCreate( list *pl );
/* #define ListDestroy( pl ) ( assert( ListEmpty( pl ) ) ) */

#define ListEmpty( pl ) ( (pl)->plNext == (pl) )
extern list* ListInsert( list* pl, void* p );
extern int ListDelete( list* pl );
extern int ListDeleteAll( list *pl );

#endif