Squashed 'third_party/boostorg/odeint/' content from commit 6ff2719
Change-Id: If4892e29c1a5e6cf3a7aa51486a2725c251b0c7d
git-subtree-dir: third_party/boostorg/odeint
git-subtree-split: 6ff2719b6907b86596c3d43e88c1bcfdf29df560
diff --git a/test_external/eigen/runge_kutta4.cpp b/test_external/eigen/runge_kutta4.cpp
new file mode 100644
index 0000000..c4054fd
--- /dev/null
+++ b/test_external/eigen/runge_kutta4.cpp
@@ -0,0 +1,94 @@
+/*
+ [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()