/****************************************************************************** * src/example.cpp * * In-Place Parallel Super Scalar Samplesort (IPS⁴o) * ****************************************************************************** * BSD 2-Clause License * * Copyright © 2020, Michael Axtmann <michael.axtmann@gmail.com> * Copyright © 2020, Sascha Witt <sascha.witt@kit.edu> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *****************************************************************************/ #include <algorithm> #include <atomic> #include <iostream> #include <random> #include <vector> #include "ips4o.hpp" int main(int argc, char** argv) { std::random_device r; std::default_random_engine gen(r()); std::uniform_real_distribution<double> dist; std::vector<double> v(1000000); for (auto& e : v) { e = dist(gen); } #if defined(_REENTRANT) ips4o::parallel::sort(v.begin(), v.end(), std::less<>{}); #else ips4o::sort(v.begin(), v.end(), std::less<>{}); #endif const bool sorted = std::is_sorted(v.begin(), v.end(), std::less<>{}); std::cout << "Elements are sorted: " << std::boolalpha << sorted << std::endl; return 0; }