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authorHarpreet2016-09-03 00:34:27 +0530
committerHarpreet2016-09-03 00:34:27 +0530
commit4b64cf486f5c999fd8167758cae27839f3b50848 (patch)
treed9d06639fb7fa61aef59be0363655e4747105ec7 /newstructure/thirdparty/linux/include/coin/CoinPresolveForcing.hpp
parentd19794fb80a271a4c885ed90f97cfc12baa012f2 (diff)
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Structure updated and intqpipopt files added
Diffstat (limited to 'newstructure/thirdparty/linux/include/coin/CoinPresolveForcing.hpp')
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diff --git a/newstructure/thirdparty/linux/include/coin/CoinPresolveForcing.hpp b/newstructure/thirdparty/linux/include/coin/CoinPresolveForcing.hpp
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+/* $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