RhodeCode

/* -*- mode: C++; indent-tabs-mode: nil; -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library.

 *

 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

  void CplexBase::_clear() {

    CPXfreeprob(cplexEnv(),&_prob);

    int status;

    _prob = CPXcreateprob(cplexEnv(), &status, "Cplex problem");

    rows.clear();

    cols.clear();

  }

  // CplexLp members

  CplexLp::CplexLp()

  CplexLp::CplexLp(const CplexEnv& env)

  CplexLp::CplexLp(const CplexLp& other)

  CplexLp::~CplexLp() {}

  CplexLp* CplexLp::newSolver() const { return new CplexLp; }

  CplexLp* CplexLp::cloneSolver() const {return new CplexLp(*this); }

  const char* CplexLp::_solverName() const { return "CplexLp"; }

  void CplexLp::_clear_temporals() {

    _col_status.clear();

    _row_status.clear();

    _primal_ray.clear();

    case CPX_UNBOUNDED:

      return INFEASIBLE;

    default:

      return UNDEFINED; //Everything else comes here

      //FIXME error

    }

#endif

  }

  // CplexMip members

  CplexMip::CplexMip()

#if CPX_VERSION < 800

    CPXchgprobtype(cplexEnv(),  _prob, CPXPROB_MIP);

#else

    CPXchgprobtype(cplexEnv(),  _prob, CPXPROB_MILP);

#endif

  }

  CplexMip::CplexMip(const CplexEnv& env)

#if CPX_VERSION < 800

    CPXchgprobtype(cplexEnv(),  _prob, CPXPROB_MIP);

#else

    CPXchgprobtype(cplexEnv(),  _prob, CPXPROB_MILP);

#endif

  }

  CplexMip::CplexMip(const CplexMip& other)

  CplexMip::~CplexMip() {}

  CplexMip* CplexMip::newSolver() const { return new CplexMip; }

  CplexMip* CplexMip::cloneSolver() const {return new CplexMip(*this); }

  const char* CplexMip::_solverName() const { return "CplexMip"; }

  void CplexMip::_setColType(int i, CplexMip::ColTypes col_type) {

    // Note If a variable is to be changed to binary, a call to CPXchgbds

    // should also be made to change the bounds to 0 and 1.

/* -*- mode: C++; indent-tabs-mode: nil; -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library.

 *

 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

    /// Destructor

    virtual ~CplexEnv();

  protected:

    cpxenv* cplexEnv() { return _env; }

    const cpxenv* cplexEnv() const { return _env; }

  };

  /// \brief Base interface for the CPLEX LP and MIP solver

  ///

  /// This class implements the common interface of the CPLEX LP and

  /// \ingroup lp_group

  class CplexBase : virtual public LpBase {

  protected:

    CplexEnv _env;

    cpxlp* _prob;

    CplexBase();

    CplexBase(const CplexEnv&);

    CplexBase(const CplexBase &);

    virtual ~CplexBase();

  ///\ingroup lp_group

  class CplexMip : public MipSolver, public CplexBase {

  public:

    /// \e

    CplexMip();

    /// \e

    CplexMip(const CplexEnv&);

    /// \e

    CplexMip(const CplexMip&);

    /// \e

    virtual ~CplexMip();

  protected:

    virtual const char* _solverName() const;

    virtual ColTypes _getColType(int col) const;

    virtual void _setColType(int col, ColTypes col_type);

    virtual SolveExitStatus _solve();

    virtual ProblemType _getType() const;

    virtual Value _getSol(int i) const;

    virtual Value _getSolValue() const;

  };

/* -*- mode: C++; indent-tabs-mode: nil; -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library.

 *

 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

    cols.clear();

  }

  void GlpkBase::freeEnv() {

    glp_free_env();

  }

  GlpkBase::FreeEnvHelper GlpkBase::freeEnvHelper;

  // GlpkLp members

  GlpkLp::GlpkLp()

    messageLevel(MESSAGE_NO_OUTPUT);

  }

  GlpkLp::GlpkLp(const GlpkLp& other)

    messageLevel(MESSAGE_NO_OUTPUT);

  }

  GlpkLp* GlpkLp::newSolver() const { return new GlpkLp; }

  GlpkLp* GlpkLp::cloneSolver() const { return new GlpkLp(*this); }

  const char* GlpkLp::_solverName() const { return "GlpkLp"; }

  void GlpkLp::_clear_temporals() {

    _primal_ray.clear();

    _dual_ray.clear();

  }

  void GlpkLp::presolver(bool b) {

    lpx_set_int_parm(lp, LPX_K_PRESOL, b ? 1 : 0);

  }

  void GlpkLp::messageLevel(MessageLevel m) {

    _message_level = m;

  }

  // GlpkMip members

  GlpkMip::GlpkMip()

    messageLevel(MESSAGE_NO_OUTPUT);

  }

  GlpkMip::GlpkMip(const GlpkMip& other)

    messageLevel(MESSAGE_NO_OUTPUT);

  }

  void GlpkMip::_setColType(int i, GlpkMip::ColTypes col_type) {

    switch (col_type) {

    case INTEGER:

      glp_set_col_kind(lp, i, GLP_IV);

      break;

    case REAL:

      glp_set_col_kind(lp, i, GLP_CV);

      break;

    }

/* -*- mode: C++; indent-tabs-mode: nil; -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library.

 *

 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

  solveAndCheck(lp, LpSolver::UNBOUNDED, expected_opt);

  //Infeasibilty

  lp.addRow(x1+x2 <=-2);

  solveAndCheck(lp, LpSolver::INFEASIBLE, expected_opt);

}

template<class LP>

void cloneTest()

{

  //Test for clone/new

  LP* lp = new LP();

  LP* lpnew = lp->newSolver();

  LP* lpclone = lp->cloneSolver();

  delete lp;

  delete lpnew;

  delete lpclone;

}

int main()

{

  LpSkeleton lp_skel;

  lpTest(lp_skel);

    GlpkLp lp_glpk1,lp_glpk2;

    lpTest(lp_glpk1);

    aTest(lp_glpk2);

    cloneTest<GlpkLp>();

  }

#endif

#ifdef HAVE_CPLEX

  try {

    CplexLp lp_cplex1,lp_cplex2;

    lpTest(lp_cplex1);

    aTest(lp_cplex2);

  } catch (CplexEnv::LicenseError& error) {

#ifdef LEMON_FORCE_CPLEX_CHECK

    check(false, error.what());

#else

    std::cerr << error.what() << std::endl;

    std::cerr << "Cplex license check failed, lp check skipped" << std::endl;

#endif

  }

#endif

#ifdef HAVE_SOPLEX

  {

    SoplexLp lp_soplex1,lp_soplex2;

    lpTest(lp_soplex1);

    aTest(lp_soplex2);

    cloneTest<SoplexLp>();

  }

#endif

#ifdef HAVE_CLP

/* -*- mode: C++; indent-tabs-mode: nil; -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library.

 *

 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

  //Restrict both to integer

  mip.colType(x1,MipSolver::INTEGER);

  expected_opt=0;

  solveAndCheck(mip, MipSolver::OPTIMAL, expected_opt);

}

template<class MIP>

void cloneTest()

{

  MIP* mip = new MIP();

  MIP* mipnew = mip->newSolver();

  MIP* mipclone = mip->cloneSolver();

  delete mip;

  delete mipnew;

  delete mipclone;

}

int main()

{

#ifdef HAVE_GLPK

  {

    GlpkMip mip1;

    aTest(mip1);

    cloneTest<GlpkMip>();

  }

#endif

#ifdef HAVE_CPLEX

  try {

    CplexMip mip2;

    aTest(mip2);

  } catch (CplexEnv::LicenseError& error) {

#ifdef LEMON_FORCE_CPLEX_CHECK

    check(false, error.what());

#else

    std::cerr << error.what() << std::endl;

    std::cerr << "Cplex license check failed, lp check skipped" << std::endl;

#endif

  }

#endif

  return 0;

}