543 	PARENT(tp) = LEFT(tp) = RIGHT(tp) = LINKFOR(tp) = NULL;  in realfree()
561 						PARENT(tp) = np;  in realfree()
571 						PARENT(tp) = np;  in realfree()
576 					if ((sp = PARENT(np)) != NULL) {  in realfree()
582 						PARENT(tp) = sp;  in realfree()
590 						PARENT(sp) = tp;  in realfree()
597 						PARENT(sp) = tp;  in realfree()
772 		PARENT(RIGHT(x)) = x;  in LEFT1()
774 	if ((PARENT(y) = PARENT(x)) != NULL) {  in LEFT1()
775 		unprotect(*npp++ = PARENT(x));  in LEFT1()
776 		if (LEFT(PARENT(x)) == x)  in LEFT1()
777 			LEFT(PARENT(y)) = y;  in LEFT1()
779 			RIGHT(PARENT(y)) = y;  in LEFT1()
782 	PARENT(x) = y;  in LEFT1()
800 		PARENT(LEFT(x)) = x;  in RIGHT1()
802 	if ((PARENT(y) = PARENT(x)) != NULL) {  in RIGHT1()
803 		unprotect(*npp++ = PARENT(x));  in RIGHT1()
804 		if (LEFT(PARENT(x)) == x)  in RIGHT1()
805 			LEFT(PARENT(y)) = y;  in RIGHT1()
807 			RIGHT(PARENT(y)) = y;  in RIGHT1()
810 	PARENT(x) = y;  in RIGHT1()
828 		PARENT(RIGHT(x)) = x;  in BULEFT2()
832 		PARENT(RIGHT(y)) = y;  in BULEFT2()
834 	if ((PARENT(z) = PARENT(x)) != NULL) {  in BULEFT2()
835 		unprotect(*npp++ = PARENT(x));  in BULEFT2()
836 		if (LEFT(PARENT(x)) == x)  in BULEFT2()
837 			LEFT(PARENT(z)) = z;  in BULEFT2()
839 			RIGHT(PARENT(z)) = z;  in BULEFT2()
842 	PARENT(y) = z;  in BULEFT2()
844 	PARENT(x) = y;  in BULEFT2()
862 		PARENT(LEFT(x)) = x;  in BURIGHT2()
866 		PARENT(LEFT(y)) = y;  in BURIGHT2()
868 	if ((PARENT(z) = PARENT(x)) != NULL) {  in BURIGHT2()
869 		unprotect(*npp++ = PARENT(x));  in BURIGHT2()
870 		if (LEFT(PARENT(x)) == x)  in BURIGHT2()
871 			LEFT(PARENT(z)) = z;  in BURIGHT2()
873 			RIGHT(PARENT(z)) = z;  in BURIGHT2()
876 	PARENT(y) = z;  in BURIGHT2()
878 	PARENT(x) = y;  in BURIGHT2()
896 		PARENT(RIGHT(y)) = y;  in TDLEFT2()
898 	if ((PARENT(z) = PARENT(x)) != NULL) {  in TDLEFT2()
899 		unprotect(*npp++ = PARENT(x));  in TDLEFT2()
900 		if (LEFT(PARENT(x)) == x)  in TDLEFT2()
901 			LEFT(PARENT(z)) = z;  in TDLEFT2()
903 			RIGHT(PARENT(z)) = z;  in TDLEFT2()
905 	PARENT(x) = z;  in TDLEFT2()
925 		PARENT(LEFT(y)) = y;
927 	if ((PARENT(z) = PARENT(x)) != NULL) {
928 		unprotect(*npp++ = PARENT(x));
929 		if (LEFT(PARENT(x)) == x)
930 			LEFT(PARENT(z)) = z;
932 			RIGHT(PARENT(z)) = z;
934 	PARENT(x) = z;
968 	if (PARENT(op))  in t_delete()
974 		PARENT(tp) = NULL;  in t_delete()
977 			PARENT(sp) = tp;  in t_delete()
984 			PARENT(sp) = tp;  in t_delete()
997 		PARENT(tp) = NULL;  in t_delete()
1018 			PARENT(sp) = tp;  in t_delete()
1024 		PARENT(tp) = NULL;  in t_delete()
1042 	while ((pp = PARENT(tp)) != NULL) {  in t_splay()
1045 		gp = PARENT(pp);  in t_splay()