FreeBSD/btree/bcompare.c

#include <db.h>
/*
 * btree compare algorithm
 *
 * @a: entry
 * @b: entry
 *
 * return -1,0,<+diff> if a is lower, equal or greater than b
 */
__attribute__((pure)) int compare(const DBT * restrict a, const DBT * restrict b)
{ 
	size_t *v1 = a->data;
	size_t *v2 = b->data;

	if (*v1 > *v2)
		return -1;

	if (*v1 == *v2)
		return 0;

	return 1;
}