BlisHelp.h

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/*===========================================================================*
 * This file is part of the BiCePS Linear Integer Solver (BLIS).             *
 *                                                                           *
 * BLIS is distributed under the Eclipse Public License as part of the       *
 * COIN-OR repository (http://www.coin-or.org).                              *
 *                                                                           *
 * Authors:                                                                  *
 *                                                                           *
 *          Yan Xu, Lehigh University                                        *
 *          Ted Ralphs, Lehigh University                                    *
 *                                                                           *
 * Conceptual Design:                                                        *
 *                                                                           *
 *          Yan Xu, Lehigh University                                        *
 *          Ted Ralphs, Lehigh University                                    *
 *          Laszlo Ladanyi, IBM T.J. Watson Research Center                  *
 *          Matthew Saltzman, Clemson University                             *
 *                                                                           * 
 *                                                                           *
 * Copyright (C) 2001-2013, Lehigh University, Yan Xu, and Ted Ralphs.       *
 * All Rights Reserved.                                                      *
 *===========================================================================*/

//#############################################################################

#ifndef BlisHelp_h_
#define BlisHelp_h_

#include "AlpsEncoded.h"

#include "Blis.h"

class CoinWarmStartBasis;
class OsiRowCut;
class BlisConstraint;
class BlisModel;

//#############################################################################

BlisConstraint * BlisOsiCutToConstraint(const OsiRowCut *rowCut);

BlisReturnStatus BlisStrongBranch(BlisModel *model, double objValue, int colInd, double x,
                                  const double *saveLower, const double *saveUpper,
                                          bool &downKeep, bool &downFinished, double &downDeg,
                                          bool &upKeep, bool &upFinished, double &upDeg);

int BlisEncodeWarmStart(AlpsEncoded *encoded, const CoinWarmStartBasis *ws);

CoinWarmStartBasis *BlisDecodeWarmStart(AlpsEncoded &encoded,
                                        AlpsReturnStatus *rc);

double BlisHashingOsiRowCut(const OsiRowCut *rowCut, 
                            const BlisModel *model);

bool BlisParallelCutCut(OsiRowCut * rowCut1,
                        OsiRowCut * rowCut2,
                        double threshold = 1.0);

bool BlisParallelCutCon(OsiRowCut * rowCut,
                        BlisConstraint * con,
                        double threshold = 1.0);

bool BlisParallelConCon(BlisConstraint * con1,
                        BlisConstraint * con2,
                        double threshold = 1.0);


#endif