cbcintlinprog added

1 files changed, 55 insertions, 0 deletions

diff --git a/thirdparty/linux/include/coin/CoinPresolveTighten.hpp b/thirdparty/linux/include/coin/CoinPresolveTighten.hpp
new file mode 100644
index 0000000..3a5319b
--- /dev/null
+++ b/thirdparty/linux/include/coin/CoinPresolveTighten.hpp
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+/* $Id: CoinPresolveTighten.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 CoinPresolveTighten_H
+#define CoinPresolveTighten_H
+
+#include "CoinPresolveMatrix.hpp"
+
+// This action has no separate class;
+// instead, it decides which columns can be made fixed
+// and calls make_fixed_action::presolve.
+const CoinPresolveAction *tighten_zero_cost(CoinPresolveMatrix *prob,
+					 const CoinPresolveAction *next);
+
+#define	DO_TIGHTEN	30
+
+class do_tighten_action : public CoinPresolveAction {
+  do_tighten_action();
+  do_tighten_action(const do_tighten_action& rhs);
+  do_tighten_action& operator=(const do_tighten_action& rhs);
+
+  struct action {
+    int *rows;
+    double *lbound;
+    double *ubound;
+    int col;
+    int nrows;
+    int direction;	// just for assertions
+  };
+
+  const int nactions_;
+  const action *const actions_;
+
+  do_tighten_action(int nactions,
+		      const action *actions,
+		      const CoinPresolveAction *next) :
+    CoinPresolveAction(next),
+    nactions_(nactions), actions_(actions) {}
+
+ public:
+  const char *name() const;
+
+  static const CoinPresolveAction *presolve(CoinPresolveMatrix *prob,
+					 const CoinPresolveAction *next);
+
+  void postsolve(CoinPostsolveMatrix *prob) const;
+
+  virtual ~do_tighten_action();
+
+};
+#endif
+
+