166   uint64_t cur_num = num();  in Average()  local
168   if (cur_num == 0) return 0;  in Average()
169   return static_cast<double>(cur_sum) / static_cast<double>(cur_num);  in Average()
173   uint64_t cur_num = num();  in StandardDeviation()  local
176   if (cur_num == 0) return 0;  in StandardDeviation()
178       static_cast<double>(cur_sum_squares * cur_num - cur_sum * cur_sum) /  in StandardDeviation()
179       static_cast<double>(cur_num * cur_num);  in StandardDeviation()
183   uint64_t cur_num = num();  in ToString()  local
188            cur_num, Average(), StandardDeviation());  in ToString()
192            (cur_num == 0 ? 0 : min()), Median(), (cur_num == 0 ? 0 : max()));  in ToString()
201   if (cur_num == 0) return r;   // all buckets are empty  in ToString()
202   const double mult = 100.0 / cur_num;  in ToString()