1 files changed, 61 insertions, 0 deletions
diff --git a/thirdparty/linux/include/coin/CoinPresolveForcing.hpp b/thirdparty/linux/include/coin/CoinPresolveForcing.hpp
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+++ b/thirdparty/linux/include/coin/CoinPresolveForcing.hpp
@@ -0,0 +1,61 @@
+/* $Id: CoinPresolveForcing.hpp 1498 2011-11-02 15:25:35Z mjs $ */
+// Copyright (C) 2002, International Business Machines
+// Corporation and others.  All Rights Reserved.
+// This code is licensed under the terms of the Eclipse Public License (EPL).
+
+#ifndef CoinPresolveForcing_H
+#define CoinPresolveForcing_H
+
+#include "CoinPresolveMatrix.hpp"
+
+/*!
+  \file
+*/
+
+#define	IMPLIED_BOUND	7
+
+/*! \class forcing_constraint_action
+    \brief Detect and process forcing constraints and useless constraints
+
+  A constraint is useless if the bounds on the variables prevent the constraint
+  from ever being violated.
+
+  A constraint is a forcing constraint if the bounds on the constraint force
+  the value of an involved variable to one of its bounds. A constraint can
+  force more than one variable.
+*/
+class forcing_constraint_action : public CoinPresolveAction {
+  forcing_constraint_action();
+  forcing_constraint_action(const forcing_constraint_action& rhs);
+  forcing_constraint_action& operator=(const forcing_constraint_action& rhs);
+public:
+  struct action {
+    const int *rowcols;
+    const double *bounds;
+    int row;
+    int nlo;
+    int nup;
+  };
+private:
+  const int nactions_;
+  // actions_ is owned by the class and must be deleted at destruction
+  const action *const actions_;
+
+public:
+  forcing_constraint_action(int nactions,
+		      const action *actions,
+		      const CoinPresolveAction *next) :
+    CoinPresolveAction(next),
+    nactions_(nactions), actions_(actions) {}
+
+  const char *name() const;
+
+  static const CoinPresolveAction *presolve(CoinPresolveMatrix * prob,
+					 const CoinPresolveAction *next);
+
+  void postsolve(CoinPostsolveMatrix *prob) const;
+
+  virtual ~forcing_constraint_action();
+};
+
+#endif