CoinPresolveImpliedFree.hpp

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/* $Id: CoinPresolveImpliedFree.hpp 2083 2019-01-06 19:38:09Z unxusr $ */
// 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 CoinPresolveImpliedFree_H
#define CoinPresolveImpliedFree_H

#define IMPLIED_FREE 9

class implied_free_action : public CoinPresolveAction {
  struct action {
    int row, col;
    double clo, cup;
    double rlo, rup;
    const double *rowels;
    const double *costs;
    int ninrow;
  };

  const int nactions_;
  const action *const actions_;

  implied_free_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,
    int &fillLevel);

  void postsolve(CoinPostsolveMatrix *prob) const;

  virtual ~implied_free_action();
};

#endif

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