typedef int (*heap_higher_priority_func)(void *, void *);
typedef void (*heap_index_func)(void *, int);
typedef void (*heap_for_each_func)(void *, void *);
typedef struct heap_context {
int array_size;
int array_size_increment;
int heap_size;
void **heap;
heap_higher_priority_func higher_priority;
heap_index_func index;
} *heap_context;
#define heap_new __heap_new
#define heap_free __heap_free
#define heap_insert __heap_insert
#define heap_delete __heap_delete
#define heap_increased __heap_increased
#define heap_decreased __heap_decreased
#define heap_element __heap_element
#define heap_for_each __heap_for_each
heap_context heap_new(heap_higher_priority_func, heap_index_func, int);
int heap_free(heap_context);
int heap_insert(heap_context, void *);
int heap_delete(heap_context, int);
int heap_increased(heap_context, int);
int heap_decreased(heap_context, int);
void * heap_element(heap_context, int);
int heap_for_each(heap_context, heap_for_each_func, void *);