ceph/src/boost/libs/phoenix/test/stdlib/cmath.cpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2007 Joel de Guzman
   3     Copyright (c) 2014      John Fletcher
   4
   5     Distributed under the Boost Software License, Version 1.0. (See accompanying
   6     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 ==============================================================================*/
   8
   9 #include <cmath>
  10 #include <boost/function.hpp>
  11 #include <boost/phoenix/core.hpp>
  12 #include <boost/phoenix/operator.hpp>
  13 #include <boost/phoenix/stl/cmath.hpp>
  14 #include <boost/core/lightweight_test.hpp>
  15
  16 int main()
  17 {
  18     double eps = 0.000001;
  19     using namespace boost::phoenix::arg_names;
  20     boost::function<bool(double, double)> f = boost::phoenix::fabs(_1 - _2) < eps;
  21
  22     double x = boost::phoenix::pow(_1,_2)(2.,2.);
  23     double y = boost::phoenix::atan2(_1,_2)(1.,1.);
  24     double z = boost::phoenix::tan(_1)(y);
  25
  26     BOOST_TEST(f(0.0, 0 * eps));
  27     BOOST_TEST(!f(0.0, eps));
  28     BOOST_TEST(std::fabs(x-4.) < eps );
  29     BOOST_TEST(std::fabs(z-1.) < eps );
  30     return boost::report_errors();
  31 }