BlisSolution.h

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/*===========================================================================*
 * This file is part of the BiCePS Linear Integer Solver (BLIS).             *
 *                                                                           *
 * ALPS 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 BlisSolution_h_
#define BlisSolution_h_

#include "Alps.h"
#include "BcpsSolution.h"

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class BlisSolution : public BcpsSolution {

 protected:

 public:
    
    BlisSolution() 
        : 
        BcpsSolution()
        {}

    BlisSolution(int s, const double *values, double objValue)
        :
        BcpsSolution(s, values, objValue)
        {}

    virtual ~BlisSolution() { }

    virtual void print(std::ostream& os) const {
        double nearInt = 0.0;
        for (int j = 0; j < size_; ++j) {
            if (values_[j] > 1.0e-15 || values_[j] < -1.0e-15) {
                nearInt = floor(values_[j] + 0.5);
                if (ALPS_FABS(nearInt - values_[j]) < 1.0e-6) {
                    os << "x[" << j << "] = " << nearInt << std::endl;
                }
                else {
                    os << "x[" << j << "] = " << values_[j] << std::endl;
                }   
            }
        }
    }
    
    // BlisIpSolution* testIntegrality(const double etol = 1e-5) const; 
    
    using AlpsKnowledge::encode ;
    virtual AlpsEncoded* encode() const {
        AlpsEncoded* encoded = new AlpsEncoded(AlpsKnowledgeTypeSolution);
        encodeBcps(encoded);
        // Nothing to do for Blis part.
        return encoded;
    }
  
    virtual AlpsKnowledge* decode(AlpsEncoded& encoded) const {
        BlisSolution * sol = new BlisSolution();
        sol->decodeBcps(encoded);
        return sol;
    }
    
};

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#endif