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29 lines
1.0 KiB
29 lines
1.0 KiB
/*****************************************************************************
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* Definitions, visible to others, of Priority Queue module: *
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*****************************************************************************/
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#ifndef PRIOR_Q_GH
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#define PRIOR_Q_GH
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typedef struct PriorQue
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{
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struct PriorQue *Right, *Left; /* Pointers to two sons of this node. */
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void * Data; /* Pointers to the data itself. */
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} PriorQue;
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typedef int (*PQCompFuncType)( void *, void *); /* Comparison function. */
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/* And global function prototypes: */
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void PQInit(PriorQue **PQ);
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int PQEmpty(PriorQue *PQ);
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void PQCompFunc(PQCompFuncType NewCompFunc);
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void * PQFirst(PriorQue **PQ, int Delete);
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void * PQInsert(PriorQue **PQ, void * NewItem);
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void * PQDelete(PriorQue **PQ, void * NewItem);
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void * PQFind(PriorQue *PQ, void * OldItem);
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void * PQNext(PriorQue *PQ, void * CmpItem, void * BiggerThan);
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void PQPrint(PriorQue *PQ, void (*PrintFunc)());
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void PQFree(PriorQue *PQ, int FreeItems);
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void PQFreeFunc(PriorQue *PQ, void (*FreeFunc)(void *));
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#endif /* PRIOR_Q_GH */
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