src/search/tsearch.h


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#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 **);