Lines Matching defs:op
950 t_delete(TREE *op)
955 if (ISNOTREE(op)) {
956 tp = LINKBAK(op);
958 if ((sp = LINKFOR(op)) != NULL) {
968 /* make op the root of the tree */
969 if (PARENT(op))
970 t_splay(op);
973 if ((tp = LINKFOR(op)) != NULL) {
976 if ((sp = LEFT(op)) != NULL) {
983 if ((sp = RIGHT(op)) != NULL) {
995 /* if op has a non-null left subtree */
996 if ((tp = LEFT(op)) != NULL) {
999 if (RIGHT(op)) {
1016 /* hook the right subtree of op to the above elt */
1017 RIGHT(tp) = sp = RIGHT(op);
1023 } else if ((tp = RIGHT(op)) != NULL) { /* no left subtree */