CoinPresolveForcing.hpp

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/* $Id$ */
// 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"
 
#define IMPLIED_BOUND 7
 
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
 
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