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// Boost.Function library

// Copyright Douglas Gregor 2002-2003. Use, modification and

// distribution is subject to 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)

// For more information, see http://www.boost.org

#include <boost/function.hpp>

#include <boost/lambda/lambda.hpp>

#include <boost/lambda/bind.hpp>

#include <boost/core/lightweight_test.hpp>

#include <iostream>

#include <cstdlib>

static unsigned

func_impl(int arg1, bool arg2, double arg3)

{

using namespace std;

return abs (static_cast<int>((arg2 ? arg1 : 2 * arg1) * arg3));

}

int main()

{

using boost::function;

using namespace boost::lambda;

function <unsigned(bool, double)> f1 = bind(func_impl, 15, _1, _2);

BOOST_TEST_EQ( f1(true, 2.0), 30u );

function <unsigned(double)> f2 = boost::lambda::bind(f1, false, _1);

BOOST_TEST_EQ( f2(2.0), 60u );

function <unsigned()> f3 = boost::lambda::bind(f2, 4.0);

BOOST_TEST_EQ( f3(), 120u );

return boost::report_errors();

}

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