source: lemon-0.x/src/work/athos/lp/lp_cplex.cc @ 1303:9bcc455da4f5

/* -*- C++ -*-
 * src/lemon/lp_cplex.cc
 * - Part of LEMON, a generic C++ optimization library
 *
 * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 * (Egervary Combinatorial Optimization Research Group, 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.
 *
 */

#include"lp_cplex.h"

///\file
///\brief Implementation of the LEMON-CPLEX lp solver interface.
namespace lemon {
  
  int LpCplex::_addCol()
  {
    int i = CPXgetnumcols (env, lp);
    int lb[1],ub[1];
    lb[0]=-INF;//-CPX_INFBOUND;
    ub[0]=INF;//CPX_INFBOUND;
    status = CPXnewcols (env, lp, 1, NULL, lb, ub, NULL, NULL);
    return i;
  }
  
  int LpCplex::_addRow() 
  {
    int i = CPXgetnumrows (env, lp);
    status = CPXnewrows (env, lp, 1, NULL, NULL, NULL, NULL, NULL);
    return i;
  }
  
  ///\warning Data at index 0 is ignored iin the arrays.
  void LpCplex::_setRowCoeffs(int i, 
                              int length,
                              int  const * indices, 
                              Value  const * values )
  {
    int rowlist[length+1];
    for (int k=1;k<=length;++k){
      rowlist[k]=i;
    }
    status = CPXchgcoeflist(env, lp, 
                            length, 
                            rowlist++, 
                            inices++, 
                            values++);
  }
  
  void LpCplex::_setColCoeffs(int i, 
                              int length,
                              int  const * indices, 
                              Value  const * values)
  {
    int collist[length+1];
    for (int k=1;k<=length;++k){
      collist[k]=i;
    }
    status = CPXchgcoeflist(env, lp, 
                            length, 
                            inices++, 
                            collist++, 
                            values++);
  }
  
  void LpCplex::_setColLowerBound(int i, Value value)
  {
  }
  
  void LpCplex::_setColUpperBound(int i, Value value)
  {
  }
  
  void LpCplex::_setRowLowerBound(int i, Value value)
  {
  }
  
  void LpCplex::_setRowUpperBound(int i, Value value)
  {
  }
  
  void LpCplex::_setObjCoeff(int i, Value obj_coef)
  {
  }

  LpCplex::SolutionStatus LpCplex::_solve()
  {
    return OPTIMAL;
  }

  LpCplex::Value LpCplex::_getSolution(int i)
  {
    return 0;
  }
  
} //namespace lemon