1 files changed, 52 insertions, 0 deletions
diff --git a/src/boost/libs/yap/example/autodiff_library/VNode.h b/src/boost/libs/yap/example/autodiff_library/VNode.h
new file mode 100644
index 00000000..d9673d4b
--- /dev/null
+++ b/src/boost/libs/yap/example/autodiff_library/VNode.h
@@ -0,0 +1,52 @@
+/*
+ * VNode.h
+ *
+ *  Created on: 8 Apr 2013
+ *      Author: s0965328
+ */
+
+#ifndef VNODE_H_
+#define VNODE_H_
+
+#include "ActNode.h"
+
+namespace AutoDiff {
+class VNode: public ActNode {
+public:
+	VNode(double v=NaN_Double);
+	virtual ~VNode();
+	void collect_vnodes(boost::unordered_set<Node*>& nodes,unsigned int& total);
+	void eval_function();
+	void grad_reverse_0();
+	void grad_reverse_1();
+	unsigned int hess_reverse_0();
+	void hess_reverse_0_get_values(unsigned int i,double& x, double& x_bar, double& w, double& w_bar);
+	void hess_reverse_1(unsigned int i);
+	void hess_reverse_1_init_x_bar(unsigned int);
+	void update_x_bar(unsigned int,double);
+	void update_w_bar(unsigned int,double);
+	void hess_reverse_1_get_xw(unsigned int,double&,double&);
+	void hess_reverse_get_x(unsigned int,double& x);
+
+	void nonlinearEdges(EdgeSet&);
+
+	void inorder_visit(int level,ostream& oss);
+	string toString(int level);
+	TYPE getType();
+
+#if FORWARD_ENABLED
+	void hess_forward(unsigned int nvar, double** ret_vec);
+	//! used for only forward hessian
+	//! the id has to be assigned starting from 0
+	int id;
+	static int DEFAULT_ID;
+#endif
+	double val;
+	double u;
+
+
+};
+
+} // end namespace foo
+
+#endif /* VNODE_H_ */