#include <iostream>
#include <cmath>
#include <boost/date_time/posix_time/posix_time.hpp>


using namespace std;

int main() {
      int i;
      boost::posix_time::ptime startTime, endTime;
      boost::posix_time::time_duration totalTime;

      startTime = boost::posix_time::microsec_clock::local_time();

      for(i=0;i<1000000;i++) {
          cos(i);
      }

      endTime = boost::posix_time::microsec_clock::local_time();
      cout << "Start time " << startTime << endl;
      cout << "End Time " << endTime << endl;
      totalTime = endTime - startTime; 
      cout << "Total Time " << totalTime << endl;
      cout << "Total Seconds " << totalTime.seconds() << endl;
      cout << "Total milli Seconds " << totalTime.total_milliseconds() << endl;
      cout << "Total u Seconds " << totalTime.total_microseconds() << endl;


      return 0;
}