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dllist.h
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C/C++ Source or Header
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1993-08-25
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1KB
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39 lines
/*
dllist.h: header file for dllist.c
Copyright (C) 1993 Eugene Eric Kim
All rights reserved.
LAST REVISION: August 25, 1993
*/
#include "global.h"
typedef struct _node {
char entry[LEN];
struct _node* next;
struct _node* prev;
} node;
typedef struct {
node* head;
} dllist;
extern void list_create(dllist* l);
extern node* list_next(node* w);
extern node* list_prev(node* w);
extern int list_size(dllist l);
extern short list_empty(dllist l);
extern short list_first(node* w);
extern short list_last(node* w);
extern node* list_start(dllist l);
extern node* list_end(dllist l);
extern node* list_position(dllist l, int i);
extern node* list_del(dllist* l, node* w);
extern node* list_insafter(dllist* l, node* w, char item[LEN]);
extern node* list_insbefore(dllist* l, node* w, char item[LEN]);
extern void list_replace(dllist* l, node* w, char item[LEN]);
extern void list_interchange(dllist* l, node* w, node* v);
extern void list_traverse(dllist l, void (*visit)(node* w));
extern void list_clear(dllist* l);