81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
//=======================================================================
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// Copyright 1997, 1998, 1999, 2000 University of Notre Dame.
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// Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//=======================================================================
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#include <boost/config.hpp>
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#include <iostream>
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#include <vector>
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#include <boost/graph/random.hpp>
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#ifndef BOOST_NO_CXX11_HDR_RANDOM
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#include <random>
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namespace random_ns = std;
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#else
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#include <boost/random/mersenne_twister.hpp>
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namespace random_ns = boost;
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#endif
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#include <algorithm>
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#include <boost/pending/fibonacci_heap.hpp>
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#include <boost/graph/graph_utility.hpp>
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#include <boost/pending/indirect_cmp.hpp>
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using namespace boost;
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int
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main()
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{
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typedef indirect_cmp<float*,std::less<float> > ICmp;
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int i;
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random_ns::mt19937 gen;
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for (int N = 2; N < 200; ++N) {
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uniform_int<> distrib(0, N-1);
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boost::variate_generator<random_ns::mt19937&, uniform_int<> > rand_gen(gen, distrib);
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for (int t = 0; t < 10; ++t) {
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std::vector<float> v, w(N);
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ICmp cmp(&w[0], std::less<float>());
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fibonacci_heap<int, ICmp> Q(N, cmp);
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for (int c = 0; c < w.size(); ++c)
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w[c] = c;
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#ifndef BOOST_NO_CXX98_RANDOM_SHUFFLE
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std::random_shuffle(w.begin(), w.end());
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#else
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std::shuffle(w.begin(), w.end(), gen);
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#endif
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for (i = 0; i < N; ++i)
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Q.push(i);
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for (i = 0; i < N; ++i) {
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int u = rand_gen();
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float r = rand_gen(); r /= 2.0;
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w[u] = w[u] - r;
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Q.update(u);
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}
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for (i = 0; i < N; ++i) {
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v.push_back(w[Q.top()]);
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Q.pop();
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}
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std::sort(w.begin(), w.end());
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if (! std::equal(v.begin(), v.end(), w.begin())) {
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std::cout << std::endl << "heap sorted: ";
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std::copy(v.begin(), v.end(),
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std::ostream_iterator<float>(std::cout," "));
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std::cout << std::endl << "correct: ";
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std::copy(w.begin(), w.end(),
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std::ostream_iterator<float>(std::cout," "));
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std::cout << std::endl;
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return -1;
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}
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}
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}
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std::cout << "fibonacci heap passed test" << std::endl;
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return 0;
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}
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