ceph/src/boost/libs/chrono/example/run_timer_example2.cpp

   1 //  run_timer_example.cpp  ---------------------------------------------------//
   2
   3 //  Copyright Beman Dawes 2006, 2008
   4
   5 //  Distributed under the Boost Software License, Version 1.0.
   6 //  See http://www.boost.org/LICENSE_1_0.txt
   7
   8 //  See http://www.boost.org/libs/chrono for documentation.
   9
  10 #include <boost/chrono/process_times.hpp>
  11 #include <cmath>
  12
  13 int main( int argc, char * argv[] )
  14 {
  15   const char * format = argc > 1 ? argv[1] : "%t cpu seconds\n";
  16   int          places = argc > 2 ? std::atoi( argv[2] ) : 2;
  17
  18   boost::chrono::run_timer t( format, places );
  19
  20   for ( long i = 0; i < 10000; ++i )
  21     std::sqrt( 123.456L ); // burn some time
  22
  23   return 0;
  24 }