std::chrono::time_point<Clock,Duration>::min (3) - Linux Manuals

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

NAME

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

Synopsis

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

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

Parameters

(none)

Return value

the smallest possible time_point

Example

// Run this code

  #include <iostream>
  #include <ratio>
  #include <chrono>

  constexpr auto steady_min = std::chrono::steady_clock::time_point::min();

  int main()
  {
      auto last_frame = steady_min;
      std::chrono::duration<float, std::milli> game_time {0.0F};

      for (std::size_t count = 0; count < 5; ++count) {
          auto current_frame = std::chrono::steady_clock::now();
          // initialize timer if first frame ever:
          if (last_frame == steady_min)
              last_frame = current_frame;
          game_time += current_frame - last_frame;
          std::cout << "Drawing frame at " << game_time.count() << " ms\n";
          // animate frame at time offset game_time ...
      }
  }

Possible output:

  Drawing frame at 0 ms
  Drawing frame at 0.17551 ms
  Drawing frame at 0.358325 ms
  Drawing frame at 0.545384 ms
  Drawing frame at 0.736717 ms