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+//
+// Copyright (c) 2018 Stefan Seefeld
+// All rights reserved.
+//
+// This file is part of Boost.uBLAS. It is made available under the
+// Boost Software License, Version 1.0.
+// (Consult LICENSE or http://www.boost.org/LICENSE_1_0.txt)
+
+#pragma once
+
+#include <iostream>
+#include <chrono>
+#include <ctime>
+#include <cmath>
+#include <string>
+#include <vector>
+
+namespace boost { namespace numeric { namespace ublas { namespace benchmark {
+
+class benchmark
+{
+ using clock = std::chrono::system_clock;
+public:
+ benchmark(std::string const &name) : name_(name) {}
+ void print_header()
+ {
+ std::cout << "# benchmark : " << name_ << '\n'
+ << "# size \ttime (ms)" << std::endl;
+ }
+ virtual void setup(long) {}
+ virtual void operation(long) {}
+ virtual void teardown() {}
+
+ void run(std::vector<long> const &sizes, unsigned times = 10)
+ {
+ print_header();
+ for (auto s : sizes)
+ {
+ setup(s);
+ auto start = clock::now();
+ for (unsigned i = 0; i != times; ++i)
+ operation(s);
+ auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(clock::now() - start);
+ teardown();
+ std::cout << s << '\t' << duration.count()*1./times << std::endl;
+ }
+ }
+private:
+ std::string name_;
+};
+
+}}}}