distribution.h

//  Copyright 2021 Herald Project Contributors
//  SPDX-License-Identifier: Apache-2.0
//
 
#ifndef HERALD_DISTRIBUTION_H
#define HERALD_DISTRIBUTION_H
 
#include <cstddef>
#include <string>
 
namespace herald {
namespace datatype {
 
class Distribution {
public:
  Distribution() noexcept;
  Distribution(double x, std::size_t frequency) noexcept;
  ~Distribution() noexcept = default;
 
  void add(double x) noexcept;
  void add(double x, std::size_t frequency) noexcept;
  void add(const Distribution& other) noexcept;
 
  const std::size_t count() const noexcept;
  const double mean() const noexcept;
  const double variance() const noexcept;
  const double standardDeviation() const noexcept;
  const double min() const noexcept;
  const double max() const noexcept;
 
  operator std::string() const noexcept;
 
  void reset() noexcept;
 
private:
  std::size_t n;
  double m1;
  double m2;
  double minimum;
  double maximum;
};
 
}
}
 
#endif