git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@34 331e1502-861f-0410-8da2-ba01fb791d7f

trunk/paradiseo-mo/src/moImprBestFitAspirCrit.h

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+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+// "moImprAspirCrit.h"
+
+// (c) OPAC Team, LIFL, 2003-2006
+
+/* LICENCE TEXT
+   
+   Contact: paradiseo-help@lists.gforge.inria.fr
+*/
+
+#ifndef __moImprBestFitAspirCrit_h
+#define __moImprBestFitAspirCrit_h
+
+#include "moAspirCrit.h"
+
+//! One of the possible moAspirCrit
+/*!
+  This criterion is satisfied when a given fitness
+  is the best ever considered.
+*/
+template < class M > class moImprBestFitAspirCrit:public moAspirCrit < M >
+{
+
+public:
+
+  //! Alias for the fitness  
+  typedef typename M::EOType::Fitness Fitness;
+
+  //! Contructor
+  moImprBestFitAspirCrit ()
+  {
+
+    first_time = true;
+  }
+
+  //! Initialisation procedure
+  void init ()
+  {
+
+    first_time = true;
+  }
+
+  //! Function that indicates if the fit is better that the already saved fit
+  /*!
+     The first time, the function only saved the current move and fitness.
+
+     \param __move a move.
+     \param __fit a fitnes linked to the move.
+     \return TRUE the first time and if __fit > best_fit, else FALSE.
+   */
+  bool operator   () (const M & __move, const Fitness & __fit)
+  {
+
+    if (first_time)
+      {
+
+	best_fit = __fit;
+	first_time = false;
+
+	return true;
+      }
+    else if (__fit < best_fit)
+      return false;
+
+    else
+      {
+
+	best_fit = __fit;
+
+	return true;
+      }
+  }
+
+private:
+
+  //! Best fitness found until now
+  Fitness best_fit;
+
+  //! Indicates that a fitness has been already saved or not
+  bool first_time;
+};
+
+#endif