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- /*=============================================================================
- Copyright (c) 2001-2007 Joel de Guzman
- Copyright (c) 2014 John Fletcher
- 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 <cmath>
- #include <boost/function.hpp>
- #include <boost/phoenix/core.hpp>
- #include <boost/phoenix/operator.hpp>
- #include <boost/phoenix/stl/cmath.hpp>
- #include <boost/core/lightweight_test.hpp>
- int main()
- {
- double eps = 0.000001;
- using namespace boost::phoenix::arg_names;
- boost::function<bool(double, double)> f = boost::phoenix::fabs(_1 - _2) < eps;
- double x = boost::phoenix::pow(_1,_2)(2.,2.);
- double y = boost::phoenix::atan2(_1,_2)(1.,1.);
- double z = boost::phoenix::tan(_1)(y);
- BOOST_TEST(f(0.0, 0 * eps));
- BOOST_TEST(!f(0.0, eps));
- BOOST_TEST(std::fabs(x-4.) < eps );
- BOOST_TEST(std::fabs(z-1.) < eps );
- return boost::report_errors();
- }
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