ceph/src/boost/libs/chrono/example/rounding.cpp

   1 //  french.cpp  ----------------------------------------------------------//
   2
   3 //  Copyright 2010 Howard Hinnant
   4 //  Copyright 2011 Vicente J. Botet Escriba
   5 //  Distributed under the Boost Software License, Version 1.0.
   6 //  See http://www.boost.org/LICENSE_1_0.txt
   7
   8 // Adapted to Boost from the original Hawards's code
   9
  10 #include <iostream>
  11 //#include <boost/chrono/chrono_io.hpp>
  12 #include <boost/chrono/floor.hpp>
  13 #include <boost/chrono/round.hpp>
  14 #include <boost/chrono/ceil.hpp>
  15
  16 int main()
  17 {
  18   boost::chrono::milliseconds ms(2500);
  19   std::cout << __FILE__ << "[" << __LINE__ << "]" << std::endl;
  20   std::cout << boost::chrono::floor<boost::chrono::seconds>(ms).count()
  21       << " seconds\n";
  22   std::cout << __FILE__ << "[" << __LINE__ << "]" << std::endl;
  23   std::cout << boost::chrono::round<boost::chrono::seconds>(ms).count()
  24       << " seconds\n";
  25   std::cout << __FILE__ << "[" << __LINE__ << "]" << std::endl;
  26   std::cout << boost::chrono::ceil<boost::chrono::seconds>(ms).count()
  27       << " seconds\n";
  28   std::cout << __FILE__ << "[" << __LINE__ << "]" << std::endl;
  29   ms = boost::chrono::milliseconds(2516);
  30   std::cout << __FILE__ << "[" << __LINE__ << "]" << std::endl;
  31   typedef boost::chrono::duration<long, boost::ratio<1, 30> > frame_rate;
  32   std::cout << __FILE__ << "[" << __LINE__ << "]" << std::endl;
  33   std::cout << boost::chrono::floor<frame_rate>(ms).count()
  34       << " [1/30] seconds\n";
  35   std::cout << __FILE__ << "[" << __LINE__ << "]" << std::endl;
  36   std::cout << boost::chrono::round<frame_rate>(ms).count()
  37       << " [1/30] seconds\n";
  38   std::cout << __FILE__ << "[" << __LINE__ << "]" << std::endl;
  39   std::cout << boost::chrono::ceil<frame_rate>(ms).count()
  40       << " [1/30] seconds\n";
  41   std::cout << __FILE__ << "[" << __LINE__ << "]" << std::endl;
  42
  43   return 0;
  44 }