lemon-0.x: src/work/athos/lp/lp_cplex.cc@0274efa2222f

     1 /* -*- C++ -*-

     2  * src/lemon/lp_cplex.cc

     3  * - Part of LEMON, a generic C++ optimization library

     4  *

     5  * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

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

     7  *

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

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

    10  * precise terms see the accompanying LICENSE file.

    11  *

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

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

    14  * purpose.

    15  *

    16  */

    18 #include"lp_cplex.h"

    20 ///\file

    21 ///\brief Implementation of the LEMON-CPLEX lp solver interface.

    22 namespace lemon {

    24   int LpCplex::_addCol()

    25   {

    26     int i = CPXgetnumcols (env, lp);

    27     int lb[1],ub[1];

    28     lb[0]=-INF;//-CPX_INFBOUND;

    29     ub[0]=INF;//CPX_INFBOUND;

    30     status = CPXnewcols (env, lp, 1, NULL, lb, ub, NULL, NULL);

    31     return i;

    32   }

    34   int LpCplex::_addRow()

    35   {

    36     int i = CPXgetnumrows (env, lp);

    37     status = CPXnewrows (env, lp, 1, NULL, NULL, NULL, NULL, NULL);

    38     return i;

    39   }

    41   ///\warning Data at index 0 is ignored iin the arrays.

    42   void LpCplex::_setRowCoeffs(int i,

    43 			      int length,

    44 			      int  const * indices,

    45 			      Value  const * values )

    46   {

    47     int rowlist[length+1];

    48     for (int k=1;k<=length;++k){

    49       rowlist[k]=i;

    50     }

    51     status = CPXchgcoeflist(env, lp,

    52 			    length,

    53 			    rowlist++,

    54 			    inices++,

    55 			    values++);

    56   }

    58   void LpCplex::_setColCoeffs(int i,

    59 			      int length,

    60 			      int  const * indices,

    61 			      Value  const * values)

    62   {

    63     int collist[length+1];

    64     for (int k=1;k<=length;++k){

    65       collist[k]=i;

    66     }

    67     status = CPXchgcoeflist(env, lp,

    68 			    length,

    69 			    inices++,

    70 			    collist++,

    71 			    values++);

    72   }

    74   void LpCplex::_setColLowerBound(int i, Value value)

    75   {

    76   }

    78   void LpCplex::_setColUpperBound(int i, Value value)

    79   {

    80   }

    82   void LpCplex::_setRowLowerBound(int i, Value value)

    83   {

    84   }

    86   void LpCplex::_setRowUpperBound(int i, Value value)

    87   {

    88   }

    90   void LpCplex::_setObjCoeff(int i, Value obj_coef)

    91   {

    92   }

    94   LpCplex::SolutionStatus LpCplex::_solve()

    95   {

    96     return OPTIMAL;

    97   }

    99   LpCplex::Value LpCplex::_getSolution(int i)

   100   {

   101     return 0;

   102   }

   104 } //namespace lemon

author	ladanyi
	Tue, 05 Apr 2005 22:37:19 +0000
changeset 1308	0274efa2222f
parent 1299	e2545ef5d7d8
child 1319	6e277ba3fc76
permissions	-rw-r--r--