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C++ calculate the time cost in 100 nanoseconds precision

时间:2021-05-18 12:20:39      阅读:9      评论:0      收藏:0      [点我收藏+]
#include <chrono>
using namespace std;

void chronoDemo9()
{
    cout << "Started" << endl;
    for (int i = 0; i < 10; i++)
    {
        std::chrono::time_point<std::chrono::steady_clock> startTime = std::chrono::steady_clock::now();
        for (int i = 0; i < INT32_MAX / 10; i++)
        {
        }
        std::chrono::time_point<std::chrono::steady_clock> endTime = std::chrono::steady_clock::now();
        cout << "Time cost in seconds " << std::chrono::duration_cast<std::chrono::seconds>(endTime - startTime).count() << " seconds,"
            << std::chrono::duration_cast<std::chrono::milliseconds>(endTime - startTime).count() << " milliseconds,"
            << std::chrono::duration_cast<std::chrono::microseconds>(endTime - startTime).count() << " microseconds,"
            << std::chrono::duration_cast<std::chrono::nanoseconds>(endTime - startTime).count() << " nanoseconds" << endl;
    }
    cout << "End" << endl;
}

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C++ calculate the time cost in 100 nanoseconds precision

原文:https://www.cnblogs.com/Fred1987/p/14779618.html

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