56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
#pragma once
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#include <iostream>
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#include <cmath>
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#include "lib_begin.h"
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namespace cgv {
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namespace utils {
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/** incrementally accumulate statistical information */
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class CGV_API statistics
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{
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public:
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/// initialize with no value considered yet
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statistics();
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/// initialize and consider one value
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statistics(const double& v);
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/// initialize and consider n equal values
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statistics(const double& v, unsigned int n);
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/// initialize
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void init();
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/// initialize and consider one value
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void init(const double& v);
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/// initialize and consider n equal values
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void init(const double& v, unsigned int n);
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/// consider another value
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void update(const double& v);
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/// consider another value count times
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void update(const double& v, unsigned int n);
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/// compute average of the considered values
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double get_average() const;
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/// compute standard deviation of the considered value
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double get_standard_deviation() const;
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/// get the sum of the considered variables
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double get_sum() const;
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/// get the sum of the considered variables
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double get_sum_of_squares() const;
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/// get the minimum of the considered variables
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double get_min() const;
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/// get the maximum of the considered variables
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double get_max() const;
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/// get the number of considered variables
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unsigned int get_count() const;
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protected:
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double min, max, sum, sms;
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unsigned int cnt;
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};
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extern CGV_API std::ostream& operator << (std::ostream& os, const statistics& s);
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}
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}
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#include <cgv/config/lib_end.h> |