29 	cmp_fn_t action, int level)  in trecurse()  argument
32 	_DIAGASSERT(action != NULL);  in trecurse()
35 		(*action)(root, leaf, level);  in trecurse()
37 		(*action)(root, preorder, level);  in trecurse()
39 			trecurse(root->llink, action, level + 1);  in trecurse()
40 		(*action)(root, postorder, level);  in trecurse()
42 			trecurse(root->rlink, action, level + 1);  in trecurse()
43 		(*action)(root, endorder, level);  in trecurse()
49 twalk(const void *vroot, cmp_fn_t action) /* Root of the tree to be walked */  in twalk()  argument
51 	if (vroot != NULL && action != NULL)  in twalk()
52 		trecurse(vroot, action, 0);  in twalk()