diff --git a/ParadisEO-GPU/src/eval/moCudaEvalFunc.h b/ParadisEO-GPU/src/eval/moCudaEvalFunc.h
index e22acd259..2105ff888 100644
--- a/ParadisEO-GPU/src/eval/moCudaEvalFunc.h
+++ b/ParadisEO-GPU/src/eval/moCudaEvalFunc.h
@@ -32,3 +32,49 @@
  Contact: paradiseo-help@lists.gforge.inria.fr
  */
 
+
+#ifndef __moCudaEvalFunc_H
+#define __moCudaEvalFunc_H
+
+/**
+ * Abstract class for CUDA evaluation of neighbor
+ */
+
+template<class Neighbor>
+class moCudaEvalFunc {
+
+public:
+
+	/**
+	 * Define type of a solution corresponding to Neighbor
+	 */
+
+	typedef typename Neighbor::EOT EOT;
+	typedef typename EOT::Fitness Fitness;
+
+	/**
+	 * Constructor
+	 */
+
+	moCudaEvalFunc() {
+	}
+
+	/**
+	 * Destructor
+	 */
+
+	~moCudaEvalFunc() {
+	}
+
+	/**
+	 *Virtual functor to compute fitness of a solution neighbor
+	 *@param _solution the solution which generate the neighborhood
+	 *@param _fitness the current solution fitness
+	 *@param _index the set of index helping to compute the neighbor fitness
+	 */
+
+	virtual inline __host__ __device__ Fitness operator() (EOT & _solution,Fitness _fitness, unsigned int * _index)=0;
+
+
+};
+#endif