cbcintlinprog added

1 files changed, 104 insertions, 0 deletions

diff --git a/thirdparty/linux/include/coin/CglLiftAndProject.hpp b/thirdparty/linux/include/coin/CglLiftAndProject.hpp
new file mode 100644
index 0000000..364ba5a
--- /dev/null
+++ b/thirdparty/linux/include/coin/CglLiftAndProject.hpp
@@ -0,0 +1,104 @@
+// Copyright (C) 2000, International Business Machines
+// Corporation and others.  All Rights Reserved.
+// This code is licensed under the terms of the Eclipse Public License (EPL).
+
+#ifndef CglLiftAndProject_H
+#define CglLiftAndProject_H
+
+#include <string>
+
+#include "CglCutGenerator.hpp"
+
+/** Lift And Project Cut Generator Class */
+class CglLiftAndProject : public CglCutGenerator {
+   friend void CglLiftAndProjectUnitTest(const OsiSolverInterface * siP,
+					const std::string mpdDir );
+
+public:
+  /**@name Generate Cuts */
+  //@{
+  /** Generate lift-and-project cuts for the 
+      model of the solver interface, si. 
+      Insert the generated cuts into OsiCut, cs.
+  */
+  virtual void generateCuts(const OsiSolverInterface & si, OsiCuts & cs,
+			    const CglTreeInfo info = CglTreeInfo());
+
+  /** Get the normalization : Either beta=+1 or beta=-1.
+  */
+
+  double getBeta() const {
+    return beta_;
+  }
+
+  /** Set the normalization : Either beta=+1 or beta=-1.
+      Default value is 1.
+  */
+  void setBeta(int oneOrMinusOne){
+    if (oneOrMinusOne==1 || oneOrMinusOne==-1){
+      beta_= static_cast<double>(oneOrMinusOne);
+    }
+    else {
+      throw CoinError("Unallowable value. Beta must be 1 or -1",
+		      "cutGeneration","CglLiftAndProject");
+    }
+  }
+
+  //@}
+
+  /**@name Constructors and destructors */
+  //@{
+  /// Default constructor 
+  CglLiftAndProject ();
+ 
+  /// Copy constructor 
+  CglLiftAndProject (
+    const CglLiftAndProject &);
+
+  /// Clone
+  virtual CglCutGenerator * clone() const;
+
+  /// Assignment operator 
+  CglLiftAndProject &
+    operator=(
+    const CglLiftAndProject& rhs);
+  
+  /// Destructor 
+  virtual
+    ~CglLiftAndProject ();
+  /// Create C++ lines to get to current state
+  virtual std::string generateCpp( FILE * fp);
+  //@}
+
+private:
+  
+ // Private member methods
+
+  /**@name Private methods */
+  //@{
+
+  //@}
+
+  // Private member data
+
+  /**@name Private member data */
+  //@{
+  /// The normalization is beta_=1 or beta_=-1
+  double beta_;  
+  /// epsilon
+  double epsilon_;  
+  /// 1-epsilon
+  double onetol_;  
+  //@}
+};
+
+//#############################################################################
+/** A function that tests the methods in the CglLiftAndProject class. The
+    only reason for it not to be a member method is that this way it doesn't
+    have to be compiled into the library. And that's a gain, because the
+    library should be compiled with optimization on, but this method should be
+    compiled with debugging. */
+void CglLiftAndProjectUnitTest(const OsiSolverInterface * siP,
+			      const std::string mpdDir );
+  
+#endif