OS  2.10.2
OSLindoSolver.h
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1 /* $Id: OSLindoSolver.h 5284 2017-12-08 13:52:50Z stefan $ */
15 #ifndef LINDOSOLVER_H
16 #define LINDOSOLVER_H
17 
18 #include "OSDefaultSolver.h"
19 #include "OSInstance.h"
20 #include "lindo.h"
21 #include "OSrLWriter.h"
22 #include "OSiLWriter.h"
23 #include "OSiLReader.h"
24 #include "OSConfig.h"
25 #include <string>
26 
27 #ifdef HAVE_CTIME
28 # include <ctime>
29 #else
30 # ifdef HAVE_TIME_H
31 # include <time.h>
32 # else
33 # error "don't have header file for time"
34 # endif
35 #endif
36 
49 class LindoSolver : public DefaultSolver
50 {
51 
52 public:
53 
56 
59 
62  virtual void solve() ;
63 
68  virtual void buildSolverInstance() throw(ErrorClass);
69 
74  virtual void setSolverOptions() throw(ErrorClass);
75 
76  // Lindo specific methods
77 
82  bool optimize();
83 
90 
97 
104 
111  bool addSlackVars();
112 
118 
124 
130 
137 
138 
139 
140 private:
141 
143  pLSenv pEnv_;
144 
146  pLSmodel pModel_;
147 
149  int m_iLindoErrorCode;
150 
153  int *m_miSlackIdx;
154 
156  int m_iNumberNewSlacks;
157 
161  double *m_mdRhsValue;
162 
166  char *m_mcRowType;
167 
171  double* m_mdVarLB;
172 
176  double* m_mdVarUB;
177 
181  double* m_mdConLB;
182 
186  double* m_mdConUB;
187 
191  char** m_mmcVarName;
192 
196  std::string* m_msVarName;
197 
201  std::string* m_msConName;
202 
207  char* m_mcVarType;
211  double m_mdObjConstant; // change to array later
212 
214  OSrLWriter *osrlwriter;
215 
216  double cpuTime;
217 
218 protected:
223  void lindoAPIErrorCheck( std::string errormsg);
224 
225 };
226 
227 
228 
229 #endif
This file defines the OSInstance class along with its supporting classes.
The Default Solver Class.
used for throwing exceptions.
Definition: OSErrorClass.h:32
the LindoSolver class solves problems using Lindo.
Definition: OSLindoSolver.h:50
bool generateLindoModel()
create the LINDO environment and read the problem into the internal LINDO data structures
void dataEchoCheck()
use this for debugging, print out the instance that the solver thinks it has and compare this with th...
LindoSolver()
the LindoSolver class constructor
bool processConstraints()
read the OSiL instance constraints and put these into the LINDO API constraints
bool addSlackVars()
LINDO does not handle constraints with upper and lower bounds this method is part of kludge where we ...
bool processVariables()
read the OSiL instance variables and put these into the LINDO API variables
OSiLReader * m_osilreader
m_osilreader is an OSiLReader object used to create an osinstance from an osil string if needed
~LindoSolver()
the LindoSolver class destructor
bool processNonlinearExpressions()
read the nonlinear terms in the model
void lindoAPIErrorCheck(std::string errormsg)
Lindo's generalized error Reporting function.
virtual void setSolverOptions()
The implementation of the virtual functions.
bool processQuadraticTerms()
read the quadratic terms in the model
virtual void buildSolverInstance()
buildSolverInstance is a virtual function – the actual solvers will implement their own buildSolverIn...
bool optimize()
invoke the Lindo API solver
virtual void solve()
solve results in an instance being read into the Lindo data structures and optimized
Used to read an OSiL string.
Definition: OSiLReader.h:38
Take an OSResult object and write a string that validates against OSrL.
Definition: OSrLWriter.h:31