1
2 // Copyright (C) 2009-2012 Lorenzo Caminiti
3 // Distributed under the Boost Software License, Version 1.0
4 // (see accompanying file LICENSE_1_0.txt or a copy at
5 // http://www.boost.org/LICENSE_1_0.txt)
6 // Home at http://www.boost.org/libs/local_function
7
8 #include <boost/config.hpp>
9 #ifdef BOOST_NO_CXX11_LAMBDAS
10 # error "lambda functions required"
11 #else
12
13 #include <boost/chrono.hpp>
14 #include <vector>
15 #include <algorithm>
16 #include <iostream>
17 #include "profile_helpers.hpp"
18
main(int argc,char * argv[])19 int main(int argc, char* argv[]) {
20 unsigned long size = 0, trials = 0;
21 profile::args(argc, argv, size, trials);
22
23 double sum = 0.0;
24 int factor = 1;
25
26 std::vector<double> v(size);
27 std::fill(v.begin(), v.end(), 1.0);
28
29 boost::chrono::duration<double> trials_sec;
30 for(unsigned long i = 0; i < trials; ++i) {
31 boost::chrono::system_clock::time_point start =
32 boost::chrono::system_clock::now();
33 std::for_each(v.begin(), v.end(), [&sum, factor](const double& num) {
34 sum += factor * num;
35 });
36 trials_sec += boost::chrono::system_clock::now() - start;
37 }
38
39 profile::display(size, trials, sum, trials_sec.count());
40 return 0;
41 }
42
43 #endif // LAMBDAS
44
45