1 files changed, 147 insertions, 0 deletions
diff --git a/src/boost/libs/numeric/odeint/test_external/vexcl/lorenz.cpp b/src/boost/libs/numeric/odeint/test_external/vexcl/lorenz.cpp
new file mode 100644
index 000000000..6bde91f68
--- /dev/null
+++ b/src/boost/libs/numeric/odeint/test_external/vexcl/lorenz.cpp
@@ -0,0 +1,147 @@
+/* Boost lorenz.cpp test file
+
+ Copyright 2012 Karsten Ahnert
+ Copyright 2012 Mario Mulansky
+
+ This file tests the odeint library with the vexcl types
+
+ 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)
+*/
+
+#define BOOST_TEST_MODULE odeint_vexcl
+
+#include <vector>
+#include <iostream>
+
+#include <vexcl/vexcl.hpp>
+
+#include <boost/numeric/odeint/stepper/runge_kutta4.hpp>
+#include <boost/numeric/odeint/stepper/runge_kutta_cash_karp54.hpp>
+#include <boost/numeric/odeint/stepper/runge_kutta_dopri5.hpp>
+#include <boost/numeric/odeint/stepper/controlled_runge_kutta.hpp>
+#include <boost/numeric/odeint/stepper/dense_output_runge_kutta.hpp>
+#include <boost/numeric/odeint/algebra/vector_space_algebra.hpp>
+#include <boost/numeric/odeint/integrate/integrate_const.hpp>
+#include <boost/numeric/odeint/external/vexcl/vexcl.hpp>
+
+#include <boost/test/unit_test.hpp>
+
+using namespace boost::unit_test;
+namespace odeint = boost::numeric::odeint;
+
+
+typedef vex::vector< double >    vector_type;
+typedef vex::multivector< double, 3 > state_type;
+
+
+
+const double sigma = 10.0;
+const double b = 8.0 / 3.0;
+
+struct sys_func
+{
+    const vector_type &R;
+
+    sys_func( const vector_type &_R ) : R( _R ) { }
+
+    void operator()( const state_type &x , state_type &dxdt , double t ) const
+    {
+        dxdt(0) = -sigma * ( x(0) - x(1) );
+        dxdt(1) = R * x(0) - x(1) - x(0) * x(2);
+        dxdt(2) = - b * x(2) + x(0) * x(1);
+    }
+};
+
+const size_t n = 1024 ;
+const double dt = 0.01;
+const double t_max = 1.0;
+
+
+BOOST_AUTO_TEST_CASE( integrate_const_rk4 )
+{
+    vex::Context ctx( vex::Filter::Type(CL_DEVICE_TYPE_GPU) );
+
+    double Rmin = 0.1 , Rmax = 50.0 , dR = ( Rmax - Rmin ) / double( n - 1 );
+    std::vector<double> x( n * 3 ) , r( n );
+    for( size_t i=0 ; i<n ; ++i ) r[i] = Rmin + dR * double( i );
+
+    state_type X( ctx.queue() , n );
+    X(0) = 10.0;
+    X(1) = 10.0;
+    X(2) = 10.0;
+
+    vector_type R( ctx.queue() , r );
+
+    odeint::runge_kutta4<
+        state_type , double , state_type , double ,
+        odeint::vector_space_algebra , odeint::default_operations
+        > stepper;
+
+    odeint::integrate_const( stepper , sys_func( R ) , X , 0.0 , t_max , dt );
+
+    std::vector< double > res( 3 * n );
+    vex::copy( X(0) , res );
+    std::cout << res[0] << std::endl;
+}
+
+BOOST_AUTO_TEST_CASE( integrate_const_controlled_rk54 )
+{
+    vex::Context ctx( vex::Filter::Type(CL_DEVICE_TYPE_GPU) );
+
+    double Rmin = 0.1 , Rmax = 50.0 , dR = ( Rmax - Rmin ) / double( n - 1 );
+    std::vector<double> x( n * 3 ) , r( n );
+    for( size_t i=0 ; i<n ; ++i ) r[i] = Rmin + dR * double( i );
+
+    state_type X( ctx.queue() , n );
+    X(0) = 10.0;
+    X(1) = 10.0;
+    X(2) = 10.0;
+
+    vector_type R( ctx.queue() , r );
+
+    typedef odeint::runge_kutta_cash_karp54<
+        state_type , double , state_type , double ,
+        odeint::vector_space_algebra , odeint::default_operations
+        > stepper_type;
+    typedef odeint::controlled_runge_kutta< stepper_type > controlled_stepper_type;
+
+    odeint::integrate_const( controlled_stepper_type() , sys_func( R ) , X , 0.0 , t_max , dt );
+
+    std::vector< double > res( 3 * n );
+    vex::copy( X(0) , res );
+    std::cout << res[0] << std::endl;
+}
+
+BOOST_AUTO_TEST_CASE( integrate_const_dense_output_dopri5 )
+{
+    vex::Context ctx( vex::Filter::Type(CL_DEVICE_TYPE_GPU) );
+
+    double Rmin = 0.1 , Rmax = 50.0 , dR = ( Rmax - Rmin ) / double( n - 1 );
+    std::vector<double> x( n * 3 ) , r( n );
+    for( size_t i=0 ; i<n ; ++i ) r[i] = Rmin + dR * double( i );
+
+    state_type X( ctx.queue() , n );
+    X(0) = 10.0;
+    X(1) = 10.0;
+    X(2) = 10.0;
+
+    vector_type R( ctx.queue() , r );
+
+    typedef odeint::runge_kutta_dopri5<
+        state_type , double , state_type , double ,
+        odeint::vector_space_algebra , odeint::default_operations
+        > stepper_type;
+    typedef odeint::controlled_runge_kutta< stepper_type > controlled_stepper_type;
+    typedef odeint::dense_output_runge_kutta< controlled_stepper_type > dense_output_stepper_type;
+
+    odeint::integrate_const( dense_output_stepper_type() , sys_func( R ) , X , 0.0 , t_max , dt );
+
+    std::vector< double > res( 3 * n );
+    vex::copy( X(0) , res );
+    std::cout << res[0] << std::endl;
+}
+
+
+