pyxcp/cxx/linux/lit_tester.cpp
#include <iostream>
#include <chrono>
#include <cstdint>
using namespace std::literals;
using namespace std;
int main()
{
// cout << static_cast<unsignedI>(23ms) << endl;
auto d1 = 250ns;
std::chrono::nanoseconds d2 = 1us;
std::cout << "250ns = " << d1.count() << " nanoseconds\n" << "1us = " << d2.count() << " nanoseconds\n";
}