541 	PARENT(tp) = LEFT(tp) = RIGHT(tp) = LINKFOR(tp) = NULL;  in realfree()
559 						PARENT(tp) = np;  in realfree()
569 						PARENT(tp) = np;  in realfree()
574 					if ((sp = PARENT(np)) != NULL) {  in realfree()
580 						PARENT(tp) = sp;  in realfree()
588 						PARENT(sp) = tp;  in realfree()
595 						PARENT(sp) = tp;  in realfree()
770 		PARENT(RIGHT(x)) = x;  in LEFT1()
772 	if ((PARENT(y) = PARENT(x)) != NULL) {  in LEFT1()
773 		unprotect(*npp++ = PARENT(x));  in LEFT1()
774 		if (LEFT(PARENT(x)) == x)  in LEFT1()
775 			LEFT(PARENT(y)) = y;  in LEFT1()
777 			RIGHT(PARENT(y)) = y;  in LEFT1()
780 	PARENT(x) = y;  in LEFT1()
798 		PARENT(LEFT(x)) = x;  in RIGHT1()
800 	if ((PARENT(y) = PARENT(x)) != NULL) {  in RIGHT1()
801 		unprotect(*npp++ = PARENT(x));  in RIGHT1()
802 		if (LEFT(PARENT(x)) == x)  in RIGHT1()
803 			LEFT(PARENT(y)) = y;  in RIGHT1()
805 			RIGHT(PARENT(y)) = y;  in RIGHT1()
808 	PARENT(x) = y;  in RIGHT1()
826 		PARENT(RIGHT(x)) = x;  in BULEFT2()
830 		PARENT(RIGHT(y)) = y;  in BULEFT2()
832 	if ((PARENT(z) = PARENT(x)) != NULL) {  in BULEFT2()
833 		unprotect(*npp++ = PARENT(x));  in BULEFT2()
834 		if (LEFT(PARENT(x)) == x)  in BULEFT2()
835 			LEFT(PARENT(z)) = z;  in BULEFT2()
837 			RIGHT(PARENT(z)) = z;  in BULEFT2()
840 	PARENT(y) = z;  in BULEFT2()
842 	PARENT(x) = y;  in BULEFT2()
860 		PARENT(LEFT(x)) = x;  in BURIGHT2()
864 		PARENT(LEFT(y)) = y;  in BURIGHT2()
866 	if ((PARENT(z) = PARENT(x)) != NULL) {  in BURIGHT2()
867 		unprotect(*npp++ = PARENT(x));  in BURIGHT2()
868 		if (LEFT(PARENT(x)) == x)  in BURIGHT2()
869 			LEFT(PARENT(z)) = z;  in BURIGHT2()
871 			RIGHT(PARENT(z)) = z;  in BURIGHT2()
874 	PARENT(y) = z;  in BURIGHT2()
876 	PARENT(x) = y;  in BURIGHT2()
894 		PARENT(RIGHT(y)) = y;  in TDLEFT2()
896 	if ((PARENT(z) = PARENT(x)) != NULL) {  in TDLEFT2()
897 		unprotect(*npp++ = PARENT(x));  in TDLEFT2()
898 		if (LEFT(PARENT(x)) == x)  in TDLEFT2()
899 			LEFT(PARENT(z)) = z;  in TDLEFT2()
901 			RIGHT(PARENT(z)) = z;  in TDLEFT2()
903 	PARENT(x) = z;  in TDLEFT2()
923 		PARENT(LEFT(y)) = y;
925 	if ((PARENT(z) = PARENT(x)) != NULL) {
926 		unprotect(*npp++ = PARENT(x));
927 		if (LEFT(PARENT(x)) == x)
928 			LEFT(PARENT(z)) = z;
930 			RIGHT(PARENT(z)) = z;
932 	PARENT(x) = z;
966 	if (PARENT(op))  in t_delete()
972 		PARENT(tp) = NULL;  in t_delete()
975 			PARENT(sp) = tp;  in t_delete()
982 			PARENT(sp) = tp;  in t_delete()
995 		PARENT(tp) = NULL;  in t_delete()
1016 			PARENT(sp) = tp;  in t_delete()
1022 		PARENT(tp) = NULL;  in t_delete()
1040 	while ((pp = PARENT(tp)) != NULL) {  in t_splay()
1043 		gp = PARENT(pp);  in t_splay()