std::chrono::time_point<Clock,Duration>::max (3) - Linux Man Pages

std::chrono::time_point<Clock,Duration>::max: std::chrono::time_point<Clock,Duration>::max

NAME

std::chrono::time_point<Clock,Duration>::max - std::chrono::time_point<Clock,Duration>::max

Synopsis


static constexpr time_point max(); (until C++20)
static constexpr time_point max() noexcept; (since C++20)


Returns a time_point with the largest possible duration, i.e. time_point(std::chrono::duration::max()).

Parameters


(none)

Return value


the largest possible time_point

Example


// Run this code


  #include <chrono>
  #include <vector>
  #include <iostream>


  int main()
  {
      std::chrono::time_point<std::chrono::system_clock> now =
          std::chrono::system_clock::now();
      std::vector<std::chrono::time_point<std::chrono::system_clock>> times {
          now - std::chrono::hours(24),
          now - std::chrono::hours(48),
          now + std::chrono::hours(24),
      };


      std::chrono::time_point<std::chrono::system_clock> earliest =
          std::chrono::time_point<std::chrono::system_clock>::max();


      std::cout << "all times:\n";
      for (const auto &time : times) {
          std::time_t t = std::chrono::system_clock::to_time_t(time);
          std::cout << std::ctime(&t);


          if (time < earliest) earliest = time;
      }


      std::time_t t = std::chrono::system_clock::to_time_t(earliest);
      std::cout << "earliest:\n" << std::ctime(&t);
  }

Possible output:


  all times:
  Sun Oct 7 19:06:48 2012
  Sat Oct 6 19:06:48 2012
  Tue Oct 9 19:06:48 2012
  earliest:
  Sat Oct 6 19:06:48 2012