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