30 __nth_element_find_guard(_RandomAccessIterator& __i, _RandomAccessIterator& __j,  in __nth_element_find_guard()  argument
35         if (__i == --__j) {  in __nth_element_find_guard()
86         _RandomAccessIterator __i = __first;  in __nth_element()  local
91         if (!__comp(*__i, *__m))  // if *__first == *__m  in __nth_element()
94             if (_VSTD::__nth_element_find_guard<_Compare>(__i, __j, __m, __comp)) {  in __nth_element()
95                 _Ops::iter_swap(__i, __j);  in __nth_element()
100                 ++__i;  // __first + 1  in __nth_element()
104                         if (__i == __j) {  in __nth_element()
106                         } else if (__comp(*__first, *__i)) {  in __nth_element()
107                             _Ops::iter_swap(__i, __j);  in __nth_element()
109                             ++__i;  in __nth_element()
112                         ++__i;  in __nth_element()
116                 if (__i == __j) {  in __nth_element()
120                     while (!__comp(*__first, *__i))  in __nth_element()
121                         ++__i;  in __nth_element()
124                     if (__i >= __j)  in __nth_element()
126                     _Ops::iter_swap(__i, __j);  in __nth_element()
128                     ++__i;  in __nth_element()
132                 if (__nth < __i) {  in __nth_element()
137                 __first = __i;  in __nth_element()
141         ++__i;  in __nth_element()
144         if (__i < __j)  in __nth_element()
150                 while (__comp(*__i, *__m))  in __nth_element()
151                     ++__i;  in __nth_element()
155                 if (__i >= __j)  in __nth_element()
157                 _Ops::iter_swap(__i, __j);  in __nth_element()
161                 if (__m == __i)  in __nth_element()
163                 ++__i;  in __nth_element()
167         if (__i != __m && __comp(*__m, *__i))  in __nth_element()
169             _Ops::iter_swap(__i, __m);  in __nth_element()
173         if (__nth == __i)  in __nth_element()
178             if (__nth < __i)  in __nth_element()
183                     if (++__j == __i) {  in __nth_element()
197                 __j = __m = __i;  in __nth_element()
212         if (__nth < __i)  in __nth_element()
215             __last = __i;  in __nth_element()
220             __first = ++__i;  in __nth_element()