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 
main(int argc,char * argv[])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 }
25