Time.h

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#ifndef OSMSCOUT_UTIL_TIME_H
#define OSMSCOUT_UTIL_TIME_H
 
/*
  This source is part of the libosmscout library
  Copyright (C) 2018  Lukas Karas
 
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
*/
 
#include <chrono>
 
namespace osmscout {
 
  using Timestamp = std::chrono::system_clock::time_point;
 
  using Duration = Timestamp::duration;
 
  using HourDuration = std::chrono::duration<double, std::ratio<3600>>;
 
  inline double DurationAsSeconds(Duration duration)
  {
    return std::chrono::duration_cast<std::chrono::duration<double>>(
        duration).count();
  }
 
  inline double DurationAsHours(Duration duration)
  {
    return std::chrono::duration_cast<HourDuration>(duration).count();
  }
 
  inline Duration DurationOfHours(double hours)
  {
    return std::chrono::duration_cast<Duration>(HourDuration(hours));
  }
}
 
#endif //OSMSCOUT_UTIL_TIME_H