libs/chrono/example/chrono_unit_test.cpp

//  chrono_unit_test.cpp  ----------------------------------------------------//

//  Copyright 2008 Beman Dawes

//  Distributed under the Boost Software License, Version 1.0.
//  See http://www.boost.org/LICENSE_1_0.txt

#define _CRT_SECURE_NO_WARNINGS  // disable VC++ foolishness

#include <boost/chrono/chrono.hpp>
#include <iostream>


int main()
{
  boost::chrono::nanoseconds nanosecs;
  boost::chrono::microseconds microsecs;
  boost::chrono::milliseconds millisecs;
  boost::chrono::seconds secs;
  boost::chrono::minutes mins;
  boost::chrono::hours hrs;

  std::time_t sys_time
    = boost::chrono::system_clock::to_time_t(boost::chrono::system_clock::now());

  #ifdef UNDER_CE
  // Windows CE does not define asctime()
  struct tm * t = std::gmtime(&sys_time);
  std::cout
    << "system_clock::to_time_t(system_clock::now()) is "
    << t->tm_mon << "/" << t->tm_mday << "/" << (1900 + t->tm_year) << " " << t->tm_hour << ":" << t->tm_min << ":" << t->tm_sec << std::endl;
  #else
  std::cout
    << "system_clock::to_time_t(system_clock::now()) is "
    << std::asctime(std::gmtime(&sys_time)) << std::endl;
  #endif

  return 0;
}