src/work/athos/lp/lp_cplex.cc
author alpar
Tue, 05 Apr 2005 06:41:21 +0000
changeset 1303 9bcc455da4f5
parent 1299 e2545ef5d7d8
child 1319 6e277ba3fc76
permissions -rw-r--r--
SolutionStatus -> SolveExitStatus
SolutionType -> SolutionStatus
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/* -*- C++ -*-
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 * src/lemon/lp_cplex.cc
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 * - Part of LEMON, a generic C++ optimization library
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 *
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 * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
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 * (Egervary Combinatorial Optimization Research Group, EGRES).
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 *
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 * Permission to use, modify and distribute this software is granted
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 * provided that this copyright notice appears in all copies. For
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 * precise terms see the accompanying LICENSE file.
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 *
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 * This software is provided "AS IS" with no warranty of any kind,
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 * express or implied, and with no claim as to its suitability for any
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 * purpose.
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 *
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 */
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#include"lp_cplex.h"
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///\file
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///\brief Implementation of the LEMON-CPLEX lp solver interface.
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namespace lemon {
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  int LpCplex::_addCol()
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  {
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    int i = CPXgetnumcols (env, lp);
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    int lb[1],ub[1];
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    lb[0]=-INF;//-CPX_INFBOUND;
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    ub[0]=INF;//CPX_INFBOUND;
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    status = CPXnewcols (env, lp, 1, NULL, lb, ub, NULL, NULL);
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    return i;
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  }
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  int LpCplex::_addRow() 
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  {
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    int i = CPXgetnumrows (env, lp);
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    status = CPXnewrows (env, lp, 1, NULL, NULL, NULL, NULL, NULL);
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    return i;
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  }
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  ///\warning Data at index 0 is ignored iin the arrays.
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  void LpCplex::_setRowCoeffs(int i, 
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			      int length,
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			      int  const * indices, 
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			      Value  const * values )
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  {
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    int rowlist[length+1];
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    for (int k=1;k<=length;++k){
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      rowlist[k]=i;
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    }
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    status = CPXchgcoeflist(env, lp, 
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			    length, 
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			    rowlist++, 
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			    inices++, 
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			    values++);
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  }
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  void LpCplex::_setColCoeffs(int i, 
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			      int length,
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			      int  const * indices, 
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			      Value  const * values)
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  {
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    int collist[length+1];
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    for (int k=1;k<=length;++k){
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      collist[k]=i;
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    }
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    status = CPXchgcoeflist(env, lp, 
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			    length, 
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			    inices++, 
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			    collist++, 
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			    values++);
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  }
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  void LpCplex::_setColLowerBound(int i, Value value)
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  {
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  }
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  void LpCplex::_setColUpperBound(int i, Value value)
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  {
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  }
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  void LpCplex::_setRowLowerBound(int i, Value value)
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  {
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  }
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  void LpCplex::_setRowUpperBound(int i, Value value)
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  {
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  }
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  void LpCplex::_setObjCoeff(int i, Value obj_coef)
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  {
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  }
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  LpCplex::SolutionStatus LpCplex::_solve()
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  {
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    return OPTIMAL;
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  }
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  LpCplex::Value LpCplex::_getSolution(int i)
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  {
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    return 0;
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  }
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} //namespace lemon
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