c_cpp 以微秒为单位测量时间

Posted 2021-05-14

#include <chrono>
#include <iostream>


auto start = std::chrono::high_resolution_clock::now();

// operation to be timed ...

auto finish = std::chrono::high_resolution_clock::now();

std::cout << std::chrono::duration_cast<std::chrono::nanoseconds>(finish-start).count()/1000. << " us\n";