#include <search.h>
#include <features.h>
/* AVL tree height < 1.44*log2(nodes+2)-0.3, MAXH is a safe upper bound. */
#define MAXH (sizeof(void*)*8*3/2)
struct node {
const void *key;
void *a[2];
int h;
};
hidden int __tsearch_balance(void **);
