57   Stat1(const Self &stat) {  in Stat1()  argument
58     sum_ = stat.sum_;  in Stat1()
59     sum_squares_ = stat.sum_squares_;  in Stat1()
60     numsamples_ = stat.numsamples_;  in Stat1()
68   Self &operator=(const Self &stat) {
69     sum_ = stat.sum_;
70     sum_squares_ = stat.sum_squares_;
71     numsamples_ = stat.numsamples_;
75   Self &operator+=(const Self &stat) {
76     sum_ += stat.sum_;
77     sum_squares_ += stat.sum_squares_;
78     numsamples_ += stat.numsamples_;
82   Self &operator-=(const Self &stat) {
83     sum_ -= stat.sum_;
84     sum_squares_ -= stat.sum_squares_;
85     numsamples_ -= stat.numsamples_;
97   Self operator+(const Self &stat) const { return Self(*this) += stat; }
100   Self operator-(const Self &stat) const { return Self(*this) -= stat; }
236   Stat1MinMax(const Self &stat) : Stat1<VType, NumType>(stat) {  in Stat1MinMax()  argument
237     max_ = stat.max_;  in Stat1MinMax()
238     min_ = stat.min_;  in Stat1MinMax()
252   Self &operator=(const Self &stat) {
253     this->Stat1<VType, NumType>::operator=(stat);
254     max_ = stat.max_;
255     min_ = stat.min_;
259   Self &operator+=(const Self &stat) {
260     this->Stat1<VType, NumType>::operator+=(stat);
261     if (stat.max_ > max_) max_ = stat.max_;
262     if (stat.min_ < min_) min_ = stat.min_;
266   Self &operator*=(const VType &stat) {
267     this->Stat1<VType, NumType>::operator*=(stat);
271   Self operator+(const Self &stat) const { return Self(*this) += stat; }
284   Self &operator-=(const Self &stat);  // senseless. let it undefined.
287   Self operator-(const Self &stat) const;  // senseless. let it undefined.