#pragma once

#include <stddef.h>

typedef struct treeset treeset_t;
typedef struct treeset_node treeset_node_t;

/*
 * Cast a and b to your custom struct and return:
 * 1 for greater than
 * -1 for less than
 *  0 for equal
 */
int treeset_demo_cmp(void *a, void *b) {
    if (*((int *)a) > *((int *)a))
        return -1;
    if (*((int *)a) < *((int *)a))
        return 1;

    return 0;
}

void treeset_destroy(treeset_t *set);
void put(treeset_t *set, void *data, int (*cmp)(void *, void *));
// contains
// remove