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Diffstat (limited to 'libs/local_function/example/profile_cxx11_lambda.cpp')
-rw-r--r-- | libs/local_function/example/profile_cxx11_lambda.cpp | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/libs/local_function/example/profile_cxx11_lambda.cpp b/libs/local_function/example/profile_cxx11_lambda.cpp new file mode 100644 index 0000000000..c07ee08c72 --- /dev/null +++ b/libs/local_function/example/profile_cxx11_lambda.cpp @@ -0,0 +1,44 @@ + +// Copyright (C) 2009-2012 Lorenzo Caminiti +// Distributed under the Boost Software License, Version 1.0 +// (see accompanying file LICENSE_1_0.txt or a copy at +// http://www.boost.org/LICENSE_1_0.txt) +// Home at http://www.boost.org/libs/local_function + +#include <boost/config.hpp> +#ifdef BOOST_NO_LAMBDAS +# error "lambda functions required" +#else + +#include <boost/chrono.hpp> +#include <vector> +#include <algorithm> +#include <iostream> +#include "profile_helpers.hpp" + +int main(int argc, char* argv[]) { + unsigned long size = 0, trials = 0; + profile::args(argc, argv, size, trials); + + double sum = 0.0; + int factor = 1; + + std::vector<double> v(size); + std::fill(v.begin(), v.end(), 1.0); + + boost::chrono::duration<double> trials_sec; + for(unsigned long i = 0; i < trials; ++i) { + boost::chrono::system_clock::time_point start = + boost::chrono::system_clock::now(); + std::for_each(v.begin(), v.end(), [&sum, factor](const double& num) { + sum += factor * num; + }); + trials_sec += boost::chrono::system_clock::now() - start; + } + + profile::display(size, trials, sum, trials_sec.count()); + return 0; +} + +#endif // LAMBDAS + |