Function tdelete

examples/stdlib.c:5503–5507

    return NULL;
}
static void *tdelete(const void *key, void **root,
    int (*compare)(const void *, const void *))
{
    return pool_tdelete(NULL, key, root, compare);
}

static void tree_walk(const struct node_s *n, int depth,
    void (*action)(const void *, const VISIT, const int))