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