RB_LEFT
RB_LEFT(elm, field) = RB_RIGHT(elm, field) = NULL; \
if ((RB_RIGHT(elm, field) = RB_LEFT(tmp, field))) { \
RB_PARENT(RB_LEFT(tmp, field), field) = (elm); \
if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \
RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \
RB_LEFT(tmp, field) = (elm); \
(tmp) = RB_LEFT(elm, field); \
if ((RB_LEFT(elm, field) = RB_RIGHT(tmp, field))) { \
if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \
RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \
if (parent == RB_LEFT(gparent, field)) { \
tmp = RB_LEFT(gparent, field); \
if (RB_LEFT(parent, field) == elm) { \
if (RB_LEFT(parent, field) == elm) { \
if ((RB_LEFT(tmp, field) == NULL || \
RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) &&\
if ((oleft = RB_LEFT(tmp, field)))\
tmp = RB_LEFT(parent, field); \
tmp = RB_LEFT(parent, field); \
if ((RB_LEFT(tmp, field) == NULL || \
RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) &&\
if (RB_LEFT(tmp, field) == NULL || \
RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) {\
tmp = RB_LEFT(parent, field); \
if (RB_LEFT(tmp, field)) \
RB_COLOR(RB_LEFT(tmp, field), field) = RB_BLACK;\
if (RB_LEFT(elm, field) == NULL) \
child = RB_LEFT(elm, field); \
while ((left = RB_LEFT(elm, field))) \
if (RB_LEFT(parent, field) == elm) \
RB_LEFT(parent, field) = child; \
if (RB_LEFT(RB_PARENT(old, field), field) == old)\
RB_LEFT(RB_PARENT(old, field), field) = elm;\
RB_PARENT(RB_LEFT(old, field), field) = elm; \
if (RB_LEFT(parent, field) == elm) \
RB_LEFT(parent, field) = child; \
tmp = RB_LEFT(tmp, field); \
RB_LEFT(parent, field) = elm; \
tmp = RB_LEFT(tmp, field); \
tmp = RB_LEFT(tmp, field); \
while (RB_LEFT(elm, field)) \
elm = RB_LEFT(elm, field); \
(elm == RB_LEFT(RB_PARENT(elm, field), field))) \
if (RB_LEFT(elm, field)) { \
elm = RB_LEFT(elm, field); \
(elm == RB_LEFT(RB_PARENT(elm, field), field)))\
tmp = RB_LEFT(tmp, field); \