#ifndef INCLUDED_C_INDEXMAXPQ_H
#define INCLUDED_C_INDEXMAXPQ_H

#ifndef INCLUDED_C_TYPES_H
#include <c_Types.h>
#endif /*INCLUDED_C_TYPES_H*/


/* ------------------------------------------------------------------------------------------------------------------ */
/*  */

typedef struct {
    void* keys;
    c_size_t element_size;
    c_size_t max_items;
    c_size_t size;
    long long* pq;
    long long* qp;
    int (*compar)(const void*, const void*);
} c_IndexMaxPQ_t;

/* ------------------------------------------------------------------------------------------------------------------ */
/*  */

c_err_t c_IndexMaxPQ_Init(c_IndexMaxPQ_t* pq_inst, c_size_t max_items, c_size_t element_size,
                          int (*compar)(const void*, const void*));

void c_IndexMaxPQ_Destroy(c_IndexMaxPQ_t* pq_inst);

c_bool_t c_IndexMaxPQ_Contains(c_IndexMaxPQ_t* pq_inst, c_size_t ext_id);

c_err_t c_IndexMaxPQ_Push(c_IndexMaxPQ_t* pq_inst, c_size_t ext_id, const void* element);

c_err_t c_IndexMaxPQ_Pop(c_IndexMaxPQ_t* pq_inst, c_size_t* out_ext_id, void* out_element_buffer);

c_err_t c_IndexMaxPQ_ChangeKey(c_IndexMaxPQ_t* pq_inst, c_size_t ext_id, const void* new_element);

void* c_IndexMaxPQ_Peek(c_IndexMaxPQ_t* pq_inst, c_size_t* out_ext_id);


#endif /*INCLUDED_C_INDEXMAXPQ_H*/