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- /*
- [auto_generated]
- libs/numeric/odeint/test_external/eigen/runge_kutta4.cpp
- [begin_description]
- tba.
- [end_description]
- Copyright 2013 Karsten Ahnert
- Copyright 2013 Mario Mulansky
- 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>
- #ifdef BOOST_MSVC
- #pragma warning(disable:4996)
- #endif
- #define BOOST_TEST_MODULE odeint_eigen_runge_kutta4
- #include <boost/test/unit_test.hpp>
- #include <boost/numeric/odeint/algebra/vector_space_algebra.hpp>
- #include <boost/numeric/odeint/stepper/runge_kutta4.hpp>
- #include <boost/numeric/odeint/external/eigen/eigen_resize.hpp>
- using namespace boost::unit_test;
- using namespace boost::numeric::odeint;
- struct sys
- {
- template< class State , class Deriv >
- void operator()( const State &x , Deriv &dxdt , double t ) const
- {
- dxdt[0] = 1.0;
- }
- };
- BOOST_AUTO_TEST_SUITE( eigen_runge_kutta4 )
- BOOST_AUTO_TEST_CASE( compile_time_matrix )
- {
- typedef Eigen::Matrix< double , 1 , 1 > state_type;
- state_type x;
- x[0] = 10.0;
- runge_kutta4< state_type , double , state_type , double , vector_space_algebra > rk4;
- rk4.do_step( sys() , x , 0.0 , 0.1 );
- BOOST_CHECK_CLOSE( x[0] , 10.1 , 1.0e-13 );
-
- }
- BOOST_AUTO_TEST_CASE( runtime_matrix )
- {
- typedef Eigen::Matrix< double , Eigen::Dynamic , 1 > state_type;
- state_type x( 1 );
- x[0] = 10.0;
- runge_kutta4< state_type , double , state_type , double , vector_space_algebra > rk4;
- rk4.do_step( sys() , x , 0.0 , 0.1 );
- BOOST_CHECK_CLOSE( x[0] , 10.1 , 1.0e-13 );
- }
- BOOST_AUTO_TEST_CASE( compile_time_array )
- {
- typedef Eigen::Array< double , 1 , 1 > state_type;
- state_type x;
- x[0] = 10.0;
- runge_kutta4< state_type , double , state_type , double , vector_space_algebra > rk4;
- rk4.do_step( sys() , x , 0.0 , 0.1 );
- BOOST_CHECK_CLOSE( x[0] , 10.1 , 1.0e-13 );
-
- }
- BOOST_AUTO_TEST_CASE( runtime_array )
- {
- typedef Eigen::Array< double , Eigen::Dynamic , 1 > state_type;
- state_type x( 1 );
- x[0] = 10.0;
- runge_kutta4< state_type , double , state_type , double , vector_space_algebra > rk4;
- rk4.do_step( sys() , x , 0.0 , 0.1 );
- BOOST_CHECK_CLOSE( x[0] , 10.1 , 1.0e-13 );
- }
- BOOST_AUTO_TEST_SUITE_END()
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