statistics.h

#pragma once
 
#include <iostream>
#include <cmath>
 
#include "lib_begin.h"
 
namespace cgv {
    namespace utils {
 
class CGV_API statistics
{
public:
    statistics();
    statistics(const double& v);
    statistics(const double& v, unsigned int n);
    void init();
    void init(const double& v);
    void init(const double& v, unsigned int n);
    void update(const double& v);
    void update(const double& v, unsigned int n);
    double get_average() const;
    double get_variance() const;
    double get_standard_deviation() const;
    double get_sum() const;
    double get_sum_of_squares() const;
    double get_min() const;
    double get_max() const;
    unsigned int get_count() const;
protected:
    double min, max, sum, sms;
    unsigned int cnt;
};
 
 
extern CGV_API std::ostream& operator << (std::ostream& os, const statistics& s);
 
    }
}
 
#include <cgv/config/lib_end.h>