56   Stat1(const Self &stat) {  in Stat1()  argument
57     sum_ = stat.sum_;  in Stat1()
58     sum_squares_ = stat.sum_squares_;  in Stat1()
59     numsamples_ = stat.numsamples_;  in Stat1()
67   Self &operator=(const Self &stat) {
68     sum_ = stat.sum_;
69     sum_squares_ = stat.sum_squares_;
70     numsamples_ = stat.numsamples_;
74   Self &operator+=(const Self &stat) {
75     sum_ += stat.sum_;
76     sum_squares_ += stat.sum_squares_;
77     numsamples_ += stat.numsamples_;
81   Self &operator-=(const Self &stat) {
82     sum_ -= stat.sum_;
83     sum_squares_ -= stat.sum_squares_;
84     numsamples_ -= stat.numsamples_;
96   Self operator+(const Self &stat) const { return Self(*this) += stat; }
99   Self operator-(const Self &stat) const { return Self(*this) -= stat; }
235   Stat1MinMax(const Self &stat) : Stat1<VType, NumType>(stat) {  in Stat1MinMax()  argument
236     max_ = stat.max_;  in Stat1MinMax()
237     min_ = stat.min_;  in Stat1MinMax()
251   Self &operator=(const Self &stat) {
252     this->Stat1<VType, NumType>::operator=(stat);
253     max_ = stat.max_;
254     min_ = stat.min_;
258   Self &operator+=(const Self &stat) {
259     this->Stat1<VType, NumType>::operator+=(stat);
260     if (stat.max_ > max_) max_ = stat.max_;
261     if (stat.min_ < min_) min_ = stat.min_;
265   Self &operator*=(const VType &stat) {
266     this->Stat1<VType, NumType>::operator*=(stat);
270   Self operator+(const Self &stat) const { return Self(*this) += stat; }
283   Self &operator-=(const Self &stat);  // senseless. let it undefined.
286   Self operator-(const Self &stat) const;  // senseless. let it undefined.