CoinPresolveSubst.hpp

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

#ifndef CoinPresolveSubst_H
#define CoinPresolveSubst_H
#define SUBST_ROW       21


class subst_constraint_action : public CoinPresolveAction {
public:
  struct action {
    double *rlos;
    double *rups;

    double *coeffxs;
    int *rows;
    
    int *ninrowxs;
    /*const*/ int *rowcolsxs;
    /*const*/ double *rowelsxs;

    const double *costsx;
    int col;
    int rowx;
    int rowy;

    int nincol;
  };

  const int nactions_;
  const action *const actions_;

  subst_constraint_action(int nactions,
                          action *actions,
                      const CoinPresolveAction *next) :
    CoinPresolveAction(next),
    nactions_(nactions), actions_(actions) {};

 public:
  const char *name() const;

  static const CoinPresolveAction *presolve(CoinPresolveMatrix * prob,
                                         int *implied_free,
                                         const CoinPresolveAction *next,
                                        int & fill_level);
  static const CoinPresolveAction *presolveX(CoinPresolveMatrix * prob,
                                  const CoinPresolveAction *next,
                                  int fillLevel);

  void postsolve(CoinPostsolveMatrix *prob) const;

  ~subst_constraint_action();
};





/*static*/ void implied_bounds(const double *els,
                           const double *clo, const double *cup,
                           const int *hcol,
                           CoinBigIndex krs, CoinBigIndex kre,
                           double *maxupp, double *maxdownp,
                           int jcol,
                           double rlo, double rup,
                           double *iclb, double *icub);
#endif

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