Lines Matching defs:op
754 t_delete(TREE *op)
759 if (ISNOTREE(op)) {
760 tp = LINKBAK(op);
761 if ((sp = LINKFOR(op)) != NULL)
767 /* make op the root of the tree */
768 if (PARENT(op))
769 t_splay(op);
772 if ((tp = LINKFOR(op)) != NULL) {
774 if ((sp = LEFT(op)) != NULL)
778 if ((sp = RIGHT(op)) != NULL)
786 /* if op has a non-null left subtree */
787 if ((tp = LEFT(op)) != NULL) {
790 if (RIGHT(op)) {
802 /* hook the right subtree of op to the above elt */
803 RIGHT(tp) = RIGHT(op);
806 } else if ((tp = RIGHT(op)) != NULL) /* no left subtree */