/home/coin/SVN-release/CoinAll-1.1.0/CoinUtils/src/CoinPresolveImpliedFree.hpp

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// Copyright (C) 2002, International Business Machines
// Corporation and others.  All Rights Reserved.

#ifndef CoinPresolveImpliedFree_H
#define CoinPresolveInpliedFree_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;

  ~implied_free_action();
};

#endif

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