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

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

#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

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