ceph/src/boost/libs/date_time/example/posix_time/time_math.cpp

   1 /* Some simple examples of constructing and calculating with times
   2  * Output:
   3  * 2002-Feb-01 00:00:00 - 2002-Feb-01 05:04:02.001000000 = -5:04:02.001000000
   4  */
   5
   6 #include "boost/date_time/posix_time/posix_time.hpp"
   7 #include <iostream>
   8
   9 int
  10 main()
  11 {
  12   using namespace boost::posix_time;
  13   using namespace boost::gregorian;
  14
  15   date d(2002,Feb,1); //an arbitrary date
  16   //construct a time by adding up some durations
  17   ptime t1(d, hours(5)+minutes(4)+seconds(2)+milliseconds(1));
  18   //construct a new time by subtracting some times
  19   ptime t2 = t1 - hours(5)- minutes(4)- seconds(2)- milliseconds(1);
  20   //construct a duration by taking the difference between times
  21   time_duration td = t2 - t1;
  22
  23   std::cout << to_simple_string(t2) << " - "
  24             << to_simple_string(t1) << " = "
  25             << to_simple_string(td) << std::endl;
  26
  27   return 0;
  28 }
  29
  30 /*  Copyright 2001-2004: CrystalClear Software, Inc
  31  *  http://www.crystalclearsoftware.com
  32  *
  33  *  Subject to the Boost Software License, Version 1.0.
  34  * (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
  35  */
  36