[Boost-commit] svn:boost r66575 - sandbox/odeint/branches/karsten/libs/numeric/odeint/ideas/generic_stepper

Subject: [Boost-commit] svn:boost r66575 - sandbox/odeint/branches/karsten/libs/numeric/odeint/ideas/generic_stepper
From: karsten.ahnert_at_[hidden]
Date: 2010-11-14 14:18:21

Author: karsten
Date: 2010-11-14 14:18:06 EST (Sun, 14 Nov 2010)
New Revision: 66575
URL: http://svn.boost.org/trac/boost/changeset/66575

Log:
* add fusion_array to ideas/generic_stepper
Added:
   sandbox/odeint/branches/karsten/libs/numeric/odeint/ideas/generic_stepper/fusion_array.cpp   (contents, props changed)

Added: sandbox/odeint/branches/karsten/libs/numeric/odeint/ideas/generic_stepper/fusion_array.cpp
==============================================================================
--- (empty file)
+++ sandbox/odeint/branches/karsten/libs/numeric/odeint/ideas/generic_stepper/fusion_array.cpp	2010-11-14 14:18:06 EST (Sun, 14 Nov 2010)
@@ -0,0 +1,114 @@
+/*
+ * main.cpp
+ *
+ *  Created on: Oct 16, 2010
+ *      Author: karsten
+ */
+
+#include <iostream>
+#include <map>
+#include <string>
+#include <algorithm>
+#include <typeinfo>
+
+#include <tr1/array>
+
+#include <boost/mpl/vector.hpp>
+#include <boost/mpl/copy.hpp>
+#include <boost/mpl/range_c.hpp>
+#include <boost/mpl/inserter.hpp>
+#include <boost/mpl/placeholders.hpp>
+#include <boost/mpl/push_back.hpp>
+
+#include <boost/fusion/container.hpp>
+#include <boost/fusion/algorithm.hpp>
+#include <boost/fusion/include/mpl.hpp>
+//#include <boost/fusion/adapted/mpl.hpp>
+//#include <boost/fusion/container/vector/convert.hpp>
+//#include <boost/fusion/include/as_vector.hpp>
+
+
+#define tab "\t"
+
+using namespace std;
+namespace fusion = boost::fusion;
+namespace mpl = boost::mpl;
+
+//template< class T , class Constant >
+//struct array_wrapper : std::tr1::array< T , Constant::value >
+//{
+//};
+
+template< class T , class Constant >
+struct array_wrapper
+{
+	typedef typename std::tr1::array< T , Constant::value > type;
+};
+
+
+struct print_xml
+{
+    template <typename T>
+    void operator()(T const& x) const
+    {
+        std::cout
+            << '<' << typeid(x).name() << '>'
+//            << x
+            << "</" << typeid(x).name() << '>'
+            << endl;
+    }
+};
+
+
+template< size_t N >
+class test_class
+{
+public:
+
+	typedef typename fusion::result_of::as_vector
+	<
+		typename mpl::copy
+		<
+			mpl::range_c< size_t , 1 , N > ,
+			mpl::inserter
+			<
+				mpl::vector0<> ,
+				mpl::push_back< mpl::_1 , array_wrapper< double , mpl::_2 > >
+			>
+		>::type
+	>::type coef_a_type;
+
+	typedef std::tr1::array< double , N > coef_c_type;
+
+	const coef_a_type coef_a;
+	const coef_c_type coef_c;
+
+	test_class( const coef_a_type &a , const coef_c_type &c ) : coef_a( a ) , coef_c( c ) { }
+};
+
+
+
+int main( int argc , char **argv )
+{
+	typedef test_class< 3 > class_type;
+	const std::tr1::array< double , 1 > a_1 = {{ 0.5 }};
+	const std::tr1::array< double , 2 > a_2 = {{ 2.2 , 3.3 }};
+	const class_type::coef_a_type coef_a = fusion::make_vector( a_1 , a_2 );
+
+	test_class< 3 >::coef_a_type coef_a_new;
+	fusion::for_each( coef_a_new , print_xml() );
+
+
+	const class_type::coef_c_type coef_c = {{ 1.0 , 2.0 }};
+
+	class_type my_class( coef_a , coef_c );
+
+	cout << my_class.coef_c[0] << endl;
+	cout << my_class.coef_c[1] << endl;
+
+	cout << fusion::at_c< 0 >( my_class.coef_a )[0] << endl;
+	cout << fusion::at_c< 1 >( my_class.coef_a )[0] << endl;
+	cout << fusion::at_c< 1 >( my_class.coef_a )[1] << endl;
+
+	return 0;
+}