histogram/include/boost/histogram/interval.hpp

// Copyright 2015-2017 Hans Dembinski
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)

#ifndef _BOOST_HISTOGRAM_INTERVAL_HPP_
#define _BOOST_HISTOGRAM_INTERVAL_HPP_

#include <utility>

namespace boost {
namespace histogram {
namespace axis {

template <typename T> class interval {
public:
  interval() = default;
  interval(const interval &) = default;
  interval &operator=(const interval &) = default;
  interval(interval &&) = default;
  interval &operator=(interval &&) = default;

  interval(const T &x, const T &y) : a(x), b(y) {}
  interval(T &&x, T &&y) : a(std::move(x)), b(std::move(y)) {}

  template <typename U>
  interval(const interval<U> &i) : a(i.lower()), b(i.upper()) {}

  const T &lower() const noexcept { return a; }
  const T &upper() const noexcept { return b; }

  bool operator==(const interval &i) const noexcept {
    return a == i.a && b == i.b;
  }
  bool operator!=(const interval &i) const noexcept { return !operator==(i); }

private:
  T a, b;
};

} // namespace axis
} // namespace histogram
} // namespace boost

#endif