source: trunk/Cbc/src/Cbc_C_Interface.h @ 2478

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Cbc_C_interface details

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1/* $Id: Cbc_C_Interface.h 2478 2019-01-28 13:40:56Z unxusr $ */
2/*
3  Copyright (C) 2004 International Business Machines Corporation and others.
4  All Rights Reserved.
5
6  This code is licensed under the terms of the Eclipse Public License (EPL).
7*/
8#ifndef CbcModelC_H
9#define CbcModelC_H
10
11/* include all defines and ugly stuff */
12#include "Coin_C_defines.h"
13#include <stddef.h>
14
15/*
16 * Original version contributed by Bob Entriken,
17 * significantly updated by Miles Lubin.
18 * 2018: several updates by Haroldo
19 */
20
21#ifdef __cplusplus
22extern "C" {
23#endif
24
25/** Current version of Cbc */
26COINLIBAPI const char *COINLINKAGE Cbc_getVersion(void);
27
28/** \name Problem creation and modification routines */
29//@{
30
31/** @brief Creates an empty problem */
32COINLIBAPI Cbc_Model *COINLINKAGE
33Cbc_newModel(void);
34
35/** @brief Sets problem name.
36     *
37     * @param model problem object
38     * @param array string with problem name
39     **/
40COINLIBAPI int COINLINKAGE
41Cbc_setProblemName(Cbc_Model *model, const char *array);
42
43/** @brief Creates a new column
44     *
45     * Creates a new column (variable)
46     *
47     * @param model problem object
48     * @param name variable name
49     * @param lb column lower bound
50     * @param ub column upper bound
51     * @param obj objective function coefficient
52     * @param isInteger 1 if variable is integral, 0 otherwise
53     * @param nz number of rows (constraints) where this column appears, can be 0 if constraints will be added later
54     * @param rows index of rows where this column appears, NULL if rows will be added later
55     * @param coefs coefficients that this column appears in its rows, NULL if rows will be added later
56     ***/
57COINLIBAPI void COINLINKAGE
58Cbc_addCol(Cbc_Model *model, const char *name, double lb,
59  double ub, double obj, char isInteger,
60  int nz, int *rows, double *coefs);
61
62/** @brief Adds a new row
63     *
64     *  Adds a new row (linear constraint) to the problem
65     *
66     *  @param model problem object
67     *  @param name constraint name
68     *  @param nz number of variables with non-zero coefficients in this row
69     *  @param cols index of variables that appear in this row
70     *  @param coefs cofficients that that variables appear
71     *  @param sense constraint sense: L if <=, G if >=, E if =, R if ranged and N if free
72     *  @param rhs right hand size
73     * */
74COINLIBAPI void COINLINKAGE
75Cbc_addRow(Cbc_Model *model, const char *name, int nz,
76  const int *cols, const double *coefs, char sense, double rhs);
77
78/** @brief Add SOS constraints to the model using row-order matrix */
79COINLIBAPI void COINLINKAGE
80Cbc_addSOS(Cbc_Model *model, int numRows, const int *rowStarts,
81  const int *colIndices, const double *weights, const int type);
82
83/** Loads a problem (the constraints on the
84        rows are given by lower and upper bounds). If a pointer is NULL then the
85        following values are the default:
86        <ul>
87        <li> <code>colub</code>: all columns have upper bound infinity
88        <li> <code>collb</code>: all columns have lower bound 0
89        <li> <code>rowub</code>: all rows have upper bound infinity
90        <li> <code>rowlb</code>: all rows have lower bound -infinity
91        <li> <code>obj</code>: all variables have 0 objective coefficient
92        </ul>
93
94     The constraint matrix is
95     given in standard compressed sparse column (without gaps).
96     <ul>
97     <li> <code>start[i]</code> stores the starting index of the ith column
98     <li> <code>index[k]</code> stores the row index of the kth nonzero element
99     <li> <code>value[k]</code> stores the coefficient of the kth nonzero element
100     </ul>
101    */
102COINLIBAPI void COINLINKAGE
103Cbc_loadProblem(Cbc_Model *model, const int numcols, const int numrows,
104  const CoinBigIndex *start, const int *index,
105  const double *value,
106  const double *collb, const double *colub,
107  const double *obj,
108  const double *rowlb, const double *rowub);
109
110/** @brief Set the name of a column
111     *
112     * @param model problem object
113     * @param iColumn column index
114     * @param column name
115     **/
116COINLIBAPI void COINLINKAGE
117Cbc_setColName(Cbc_Model *model, int iColumn, const char *name);
118
119/** @brief Set the name of a row
120     *
121     * @param model problem object
122     * @param iRow row index
123     * @param name row name
124     **/
125COINLIBAPI void COINLINKAGE
126Cbc_setRowName(Cbc_Model *model, int iRow, const char *name);
127
128/** @brief Sets optimization direction
129    *
130    * @param model problem object
131    * @param sense: direction of optimization (1 - minimize, -1 - maximize, 0 - ignore)
132    **/
133COINLIBAPI void COINLINKAGE
134Cbc_setObjSense(Cbc_Model *model, double sense);
135
136/** @brief Set the lower bound of a single constraint
137     *
138     * @param model problem object
139     * @param index row index
140     * @param value new row lower bound
141     **/
142COINLIBAPI void COINLINKAGE
143Cbc_setRowLower(Cbc_Model *model, int index, double value);
144
145/** @brief  Set the upper bound of a single constraint
146     *
147     * @param model problem object
148     * @param index row index
149     * @param value new row upper bound
150     **/
151COINLIBAPI void COINLINKAGE
152Cbc_setRowUpper(Cbc_Model *model, int index, double value);
153
154/** @brief Set the objective coefficient of a single variable
155     *
156     * @param model problem object
157     * @param index variable index
158     * @param value new objective function coefficient for this variable
159     **/
160COINLIBAPI void COINLINKAGE
161Cbc_setObjCoeff(Cbc_Model *model, int index, double value);
162
163/** @brief Set the lower bound of a single variable
164     *
165     * @param model problem object
166     * @param index variable index
167     * @param value variable lower bound
168     **/
169COINLIBAPI void COINLINKAGE
170Cbc_setColLower(Cbc_Model *model, int index, double value);
171
172/** @brief Set the upper bound of a single variable
173     *
174     * @param model problem object
175     * @param index variable index
176     * @param value new variable upper bound
177     **/
178COINLIBAPI void COINLINKAGE
179Cbc_setColUpper(Cbc_Model *model, int index, double value);
180
181/** @brief Set this variable to be continuous
182     *
183     * @param model problem object
184     * @param iColumn column index
185     **/
186COINLIBAPI void COINLINKAGE
187Cbc_setContinuous(Cbc_Model *model, int iColumn);
188
189/** @brief Set this variable to be integer
190     *
191     * @param model problem object
192     * @param iColumn column index
193     **/
194COINLIBAPI void COINLINKAGE
195Cbc_setInteger(Cbc_Model *model, int iColumn);
196
197/** @brief Cbc_Model destructor */
198COINLIBAPI void COINLINKAGE
199Cbc_deleteModel(Cbc_Model *model);
200
201/** @brief Enter initial feasible solution
202     *
203     * Enter an initial feasible solution. Only the non-zero main
204     * binary/integer decision variables need to be informed.
205     * Auxiliary and/or continuous variables are computed
206     * automatically.
207     *
208     * @param model problem object
209     * @param count number of variables
210     * @param colNames names of variables
211     * @param colValues variable values
212     *
213     **/
214COINLIBAPI void COINLINKAGE
215Cbc_setMIPStart(Cbc_Model *model, int count, const char **colNames, const double colValues[]);
216
217/** @brief Enter initial feasible solution
218     *
219     * Enter an initial feasible solution. Only the non-zero main
220     * binary/integer decision variables need to be informed.
221     * Auxiliary and/or continuous variables are computed
222     * automatically. Same as setMIPStart but using variable indexes.
223     *
224     * @param model problem object
225     * @param count number of variables
226     * @param colIdxs indexes of variables
227     * @param colValues variable values
228     *
229     **/
230COINLIBAPI void COINLINKAGE
231Cbc_setMIPStartI(Cbc_Model *model, int count, const int colIdxs[], const double colValues[]);
232
233/** @brief Creates a copy of the current model
234     *
235     * @param model problem object
236     * @return model copy
237     **/
238COINLIBAPI Cbc_Model *COINLINKAGE
239Cbc_clone(Cbc_Model *model);
240
241//@}
242
243/** \name Routines to query problem contents
244*/
245//@{
246
247/** @brief Queries problem name
248     *
249     * @param model problem object
250     * @param maxNumberCharacters space in string array
251     * @param array string where problem name will be saved
252     **/
253COINLIBAPI void COINLINKAGE
254Cbc_problemName(Cbc_Model *model, int maxNumberCharacters, char *array);
255
256/** @brief Number of nonzero elements in constraint matrix
257     *
258     * @param model problem object
259     * @return number of non-zero entries in constraint matrix
260     **/
261COINLIBAPI int COINLINKAGE
262Cbc_getNumElements(Cbc_Model *model);
263
264/** @brief Number of variables in the model
265     * @param model problem object
266     * @return number of columns (variables)
267     **/
268COINLIBAPI int COINLINKAGE
269Cbc_getNumCols(Cbc_Model *model);
270
271/** @brief Number of integer variables in the model
272     *
273     * @param model problem object
274     * @return number of integer variables in this model
275     **/
276COINLIBAPI int COINLINKAGE
277Cbc_getNumIntegers(Cbc_Model *model);
278
279/** Number of constraints in the model
280     * @param model problem object
281     * @return number of rows (constraints) in the model
282     **/
283COINLIBAPI int COINLINKAGE
284Cbc_getNumRows(Cbc_Model *model);
285
286/** @brief Queries row name
287     *
288     * @param model problem object
289     * @param row index
290     * @param name string where row name will be stored
291     * @param string where row name will be stored
292     **/
293COINLIBAPI void COINLINKAGE
294Cbc_getRowName(Cbc_Model *model, int iRow, char *name, size_t maxLength);
295
296/** Queries column name
297     *
298     * @param model problem object
299     * @param iColumn column index
300     * @param name where name will be stored
301     * @param maxLength maximum length of name string
302     **/
303COINLIBAPI void COINLINKAGE
304Cbc_getColName(Cbc_Model *model, int iColumn, char *name, size_t maxLength);
305
306/** @brief Number of non-zero entries in a row
307     *
308     * @param model problem object
309     * @param row row index
310     * @return number of non-zero entries in row
311     **/
312COINLIBAPI int COINLINKAGE
313Cbc_getRowNz(Cbc_Model *model, int row);
314
315/** @brief Indices of variables that appear on a row
316     *
317     * @param model problem object
318     * @param row row index
319     * @return vector with indexes of columns that appear on this row
320     **/
321COINLIBAPI const int *COINLINKAGE
322Cbc_getRowIndices(Cbc_Model *model, int row);
323
324/** @brief Coefficients of variables that appear on this row
325     *
326     * @param model problem object
327     * @param row row index
328     * @return coefficients of variables that appear on this row
329     **/
330COINLIBAPI const double *COINLINKAGE
331Cbc_getRowCoeffs(Cbc_Model *model, int row);
332
333/** @brief Number of non-zero entries in a column
334     *
335     * @param model problem object
336     * @param col column index
337     * @return numbef of rows that this column appears
338     **/
339COINLIBAPI int COINLINKAGE
340Cbc_getColNz(Cbc_Model *model, int col);
341
342/** @brief Indices of rows that a column appears
343     *
344     * @param model problem object
345     * @param col column index
346     * @return indices of rows that this column appears
347     **/
348COINLIBAPI const int *COINLINKAGE
349Cbc_getColIndices(Cbc_Model *model, int col);
350
351/** @brief Coefficients that a column appear in rows
352     *
353     * @param model problem object
354     * @param col column index
355     * @return coefficients of this column in rows
356     **/
357COINLIBAPI const double *COINLINKAGE
358Cbc_getColCoeffs(Cbc_Model *model, int col);
359
360/** @brief Right hand side of a row
361     *
362     * @param model problem object
363     * @param row row index
364     * @return row right hand side
365     **/
366COINLIBAPI double COINLINKAGE
367Cbc_getRowRHS(Cbc_Model *model, int row);
368
369/** @brief Sense a row
370     * @param model problem object
371     * @param row row index
372     * @return row sense: E for =, L for <=, G for >= and R for ranged row
373     **/
374COINLIBAPI char COINLINKAGE
375Cbc_getRowSense(Cbc_Model *model, int row);
376
377/** @brief Direction of optimization
378     *
379     * @param model problem object
380     * @return Direction of optimization (1 - minimize, -1 - maximize, 0 - ignore)
381     **/
382COINLIBAPI double COINLINKAGE
383Cbc_getObjSense(Cbc_Model *model);
384
385/** @brief Constraint lower bounds
386     *
387     * @param model problem object
388     * @return vector with lower bounds of constraints
389     **/
390COINLIBAPI const double *COINLINKAGE
391Cbc_getRowLower(Cbc_Model *model);
392
393/** @brief Constraint upper bounds
394     *
395     * @param model problem object
396     * @return constraint upper bounds
397     **/
398COINLIBAPI const double *COINLINKAGE
399Cbc_getRowUpper(Cbc_Model *model);
400
401/** @brief Objective vector
402     *
403     * @param model problem object
404     * @return vector with coefficients of variables in the objective function
405     **/
406COINLIBAPI const double *COINLINKAGE
407Cbc_getObjCoefficients(Cbc_Model *model);
408
409/** @brief Variable lower bounds
410     *
411     * @param model problem object
412     * @return vector with lower bounds of variables
413     **/
414COINLIBAPI const double *COINLINKAGE
415Cbc_getColLower(Cbc_Model *model);
416
417/** @brief Variable upper bounds
418     *
419     * @param model problem object
420     * @return vector with column upper bounds
421     **/
422COINLIBAPI const double *COINLINKAGE
423Cbc_getColUpper(Cbc_Model *model);
424
425/** @brief Determine whether the ith variable is integer restricted
426     *
427     * @param model problem object
428     * @param i variable index
429     * @return 1 if variable is integer, 0 otherwise
430     **/
431COINLIBAPI int COINLINKAGE
432Cbc_isInteger(Cbc_Model *model, int i);
433
434
435//@}
436
437/** \name Routines to load and save problems from disk
438*/
439//@{
440
441/** @brief Read an mps file from the given filename
442    *
443    * @param model problem object
444    * @param fileName file name
445    **/
446COINLIBAPI int COINLINKAGE
447Cbc_readMps(Cbc_Model *model, const char *filename);
448
449/** @brief Read an lp file from the given filename
450     *
451     * @param model problem object
452     * @param fileName file name
453     **/
454COINLIBAPI int COINLINKAGE
455Cbc_readLp(Cbc_Model *model, const char *filename);
456
457/** @brief Write an mps file from the given filename
458     *
459     * @param model problem object
460     * @param fileName file name
461     **/
462COINLIBAPI void COINLINKAGE
463Cbc_writeMps(Cbc_Model *model, const char *filename);
464
465/** @brief Write an lp file from the given filename
466     *
467     * @param model problem object
468     * @param fileName file name
469     **/
470COINLIBAPI void COINLINKAGE
471Cbc_writeLp(Cbc_Model *model, const char *filename);
472
473//@}
474
475/**@name Getting and setting model data
476     Note that problem access and modification methods,
477       such as getColLower and setColLower,
478       are *not valid* after calling Cbc_solve().
479       Therefore it is not recommended to reuse a Cbc_Model
480       object for multiple solves. A workaround is to call Cbc_clone()
481       before solving.
482     * */
483/*@{*/
484
485/** Provide an initial feasible solution to accelerate branch-and-bound
486     Note that feasibility of the solution is *not* verified.
487    */
488COINLIBAPI void COINLINKAGE
489Cbc_setInitialSolution(Cbc_Model *model, const double *sol);
490/** "Column start" vector of constraint matrix. Same format as Cbc_loadProblem() */
491COINLIBAPI const CoinBigIndex *COINLINKAGE
492Cbc_getVectorStarts(Cbc_Model *model);
493/** "Row index" vector of constraint matrix */
494COINLIBAPI const int *COINLINKAGE
495Cbc_getIndices(Cbc_Model *model);
496/** Coefficient vector of constraint matrix */
497COINLIBAPI const double *COINLINKAGE
498Cbc_getElements(Cbc_Model *model);
499
500/** Maximum lenght of a row or column name */
501COINLIBAPI size_t COINLINKAGE
502Cbc_maxNameLength(Cbc_Model *model);
503/** Print the model */
504COINLIBAPI void COINLINKAGE
505Cbc_printModel(Cbc_Model *model, const char *argPrefix);
506/*@}*/
507
508/**@name Solver parameters */
509/*@{*/
510/** Set parameter "name" to value "value". Note that this
511     * translates directly to using "-name value" as a
512     * command-line argument to Cbc.*/
513COINLIBAPI void COINLINKAGE
514Cbc_setParameter(Cbc_Model *model, const char *name, const char *value);
515
516/*@}*/
517/**@name Message handling.  Call backs are handled by ONE function */
518/*@{*/
519/** Pass in Callback function.
520     Message numbers up to 1000000 are Clp, Coin ones have 1000000 added */
521COINLIBAPI void COINLINKAGE
522Cbc_registerCallBack(Cbc_Model *model,
523  cbc_callback userCallBack);
524
525/** Unset Callback function */
526COINLIBAPI void COINLINKAGE
527Cbc_clearCallBack(Cbc_Model *model);
528
529COINLIBAPI void COINLINKAGE Cbc_addCutCallback( 
530    Cbc_Model *model, cbc_cut_callback cutcb, 
531    const char *name, void *appData );
532
533/*@}*/
534
535/**@name Solving the model */
536/*@{*/
537/* Solve the model with Cbc (using CbcMain1).
538    */
539COINLIBAPI int COINLINKAGE
540Cbc_solve(Cbc_Model *model);
541/*@}*/
542
543/**@name Accessing the solution and optimization status */
544/*@{*/
545
546/** @brief Best feasible solution vector
547     *
548     * @param model problem object
549     * @return vector with best solution found
550     **/
551COINLIBAPI const double *COINLINKAGE
552Cbc_getColSolution(Cbc_Model *model);
553
554
555/** @brief Best known bound on the optimal objective value
556     *
557     * @param model problem object
558     * @return best possible cost (lower bound)
559     **/
560COINLIBAPI double COINLINKAGE
561Cbc_getBestPossibleObjValue(Cbc_Model *model);
562
563/** @brief Best integer feasible solution
564     *
565     * Best integer feasible solution or NULL if no integer feas sol found
566     *
567     * @param model problem object
568     * @return vector with the best solution found or NULL if no feasible solution was found
569     **/
570COINLIBAPI double *COINLINKAGE
571Cbc_bestSolution(Cbc_Model *model);
572
573/** @brief number of integer feasible solution saved
574     *
575     * @param model problem object
576     * @return number of saved solutions
577     **/
578COINLIBAPI int COINLINKAGE
579Cbc_numberSavedSolutions(Cbc_Model *model);
580
581/** @brief Vector with the i-th saved solution
582     *
583     * @param model problem object
584     * @param whichSol index of the solution to be retrieved
585     * @return vector with integer feasible solution
586     **/
587COINLIBAPI const double *COINLINKAGE
588Cbc_savedSolution(Cbc_Model *model, int whichSol);
589
590/** @brief Cost of the whichSol solution
591     *
592     * @param model problem object
593     * @param whichSol solution index
594     * @return solution cost
595     **/
596COINLIBAPI double COINLINKAGE
597Cbc_savedSolutionObj(Cbc_Model *model, int whichSol);
598
599/** @brief Queries vector of reduced costs
600     *
601     * @param model problem object
602     * @return reduced cost vector
603     **/
604COINLIBAPI const double *COINLINKAGE
605Cbc_getReducedCost(Cbc_Model *model);
606
607/** If optimization was abandoned due to numerical difficulties
608     *
609     * @param model problem object
610     * @return 1 if numerical difficulties interrupted the optimization, 0 otherwise
611     * */
612COINLIBAPI int COINLINKAGE
613Cbc_isAbandoned(Cbc_Model *model);
614
615/** @brief If the optimal solution was found
616     *
617     * @param model problem object
618     * @return 1 if optimal solution was found, 0 otherwise
619     **/
620COINLIBAPI int COINLINKAGE
621Cbc_isProvenOptimal(Cbc_Model *model);
622
623/** @brief If infeasibility was proven
624     *
625     * If model is infeasible, please note that infeasibility can also be declared
626     * if cutoff is informed and no solution better than the cutoff exists.
627     *
628     * @param model problem object
629     * @return 1 if model is infeasible, 0 otherwise
630     **/
631COINLIBAPI int COINLINKAGE
632Cbc_isProvenInfeasible(Cbc_Model *model);
633
634/** @brief Is continuous model unbounded ?
635    *
636    * @param model problem object
637    * @return 1 if model is unbounded, 0 otherwise
638    * */
639COINLIBAPI int COINLINKAGE
640Cbc_isContinuousUnbounded(Cbc_Model *model);
641
642/** Objective value of best feasible solution
643     *
644     * @param model problem object
645     * @return cost of the best solution found
646     * */
647COINLIBAPI double COINLINKAGE
648Cbc_getObjValue(Cbc_Model *model);
649
650/** @brief Final optimization status
651     *
652     * Returns the optimization status. For more info check function
653     * isProvenOptimal, isProvenInfeasible, etc. Check also secondary status.
654     * Possible status are:
655     *
656     * -1 before branchAndBound
657     * 0 finished - check isProvenOptimal or isProvenInfeasible to see if solution found (or check value of best solution)
658     * 1 stopped - on maxnodes, maxsols, maxtime
659     * 2 execution abandoned due to numerical dificulties
660     * 5 user programmed interruption
661     *
662     * @param model problem object
663     * @return problem status
664    */
665COINLIBAPI int COINLINKAGE Cbc_status(Cbc_Model *model);
666
667/** @brief Secondary status of problem
668     *
669     * Returns additional information regarding the optimization status
670     *
671     * -1 unset (status_ will also be -1)
672     *  0 search completed with solution
673     *  1 linear relaxation not feasible (or worse than cutoff)
674     *  2 stopped on gap
675     *  3 stopped on nodes
676     *  4 stopped on time
677     *  5 stopped on user event
678     *  6 stopped on solutions
679     *  7 linear relaxation unbounded
680     *  8 stopped on iteration limit
681     *
682     *  @model problem object
683     *  @return optimization status
684    */
685COINLIBAPI int COINLINKAGE
686Cbc_secondaryStatus(Cbc_Model *model);
687
688/** Sum of primal infeasibilities */
689COINLIBAPI double COINLINKAGE
690Cbc_sumPrimalInfeasibilities(Cbc_Model *model);
691
692/** Number of primal infeasibilities */
693COINLIBAPI int COINLINKAGE
694Cbc_numberPrimalInfeasibilities(Cbc_Model *model);
695
696/** Just check solution (for external use) - sets sum of
697        infeasibilities etc */
698COINLIBAPI void COINLINKAGE
699Cbc_checkSolution(Cbc_Model *model);
700
701/** Number of iterations */
702COINLIBAPI int COINLINKAGE
703Cbc_getIterationCount(Cbc_Model *model);
704
705/** Node limit reached? */
706COINLIBAPI int COINLINKAGE
707Cbc_isNodeLimitReached(Cbc_Model *model);
708/** Time limit reached? */
709COINLIBAPI int COINLINKAGE
710Cbc_isSecondsLimitReached(Cbc_Model *model);
711/** Solution limit reached? */
712COINLIBAPI int COINLINKAGE
713Cbc_isSolutionLimitReached(Cbc_Model *model);
714/** Are there numerical difficulties (for initialSolve) ? */
715COINLIBAPI int COINLINKAGE
716Cbc_isInitialSolveAbandoned(Cbc_Model *model);
717/** Is optimality proven (for initialSolve) ? */
718COINLIBAPI int COINLINKAGE
719Cbc_isInitialSolveProvenOptimal(Cbc_Model *model);
720/** Is primal infeasiblity proven (for initialSolve) ? */
721COINLIBAPI int COINLINKAGE
722Cbc_isInitialSolveProvenPrimalInfeasible(Cbc_Model *model);
723/** "row" solution
724     *  This is the vector A*x, where A is the constraint matrix
725     *  and x is the current solution. */
726COINLIBAPI const double *COINLINKAGE
727Cbc_getRowActivity(Cbc_Model *model);
728/** Number of nodes explored in B&B tree */
729COINLIBAPI int COINLINKAGE
730Cbc_getNodeCount(Cbc_Model *model);
731/** Print the solution */
732COINLIBAPI void COINLINKAGE
733Cbc_printSolution(Cbc_Model *model);
734
735/*@}*/
736
737/** \name OsiSolverInterface related routines (used in callbacks) */
738//@{
739
740/** @brief Returns number of cols in OsiSolverInterface object */
741COINLIBAPI int COINLINKAGE
742Osi_getNumCols( void *osi );
743
744/** @brief Returns column name in OsiSolverInterface object */
745COINLIBAPI void COINLINKAGE
746Osi_getColName( void *osi, int i, char *name, int maxLen );
747
748/** @brief Returns column lower bounds in OsiSolverInterface object */
749COINLIBAPI const double * COINLINKAGE
750Osi_getColLower( void *osi );
751
752/** @brief Returns column upper bounds in OsiSolverInterface object */
753COINLIBAPI const double * COINLINKAGE
754Osi_getColUpper( void *osi );
755
756/** @brief Returns integrality information for columns in OsiSolverInterface object */
757COINLIBAPI int COINLINKAGE
758Osi_isInteger( void *osi, int col );
759
760/** @brief Returns number of rows in OsiSolverInterface object */
761COINLIBAPI int COINLINKAGE
762Osi_getNumRows( void *osi );
763
764COINLIBAPI int COINLINKAGE
765Osi_getRowNz(void *osi, int row);
766
767/** @brief Indices of variables that appear on a row */
768COINLIBAPI const int *COINLINKAGE
769Osi_getRowIndices(void *osi, int row);
770
771/** @brief Coefficients of variables that appear on this row
772     *
773     * @param model problem object
774     * @param row row index
775     * @return coefficients of variables that appear on this row
776     **/
777COINLIBAPI const double *COINLINKAGE
778Osi_getRowCoeffs(void *osi, int row);
779
780/** @brief Right hand side of a row
781     *
782     * @param model problem object
783     * @param row row index
784     * @return row right hand side
785     **/
786COINLIBAPI double COINLINKAGE
787Osi_getRowRHS(void *osi, int row);
788
789/** @brief Sense a row
790     * @param model problem object
791     * @param row row index
792     * @return row sense: E for =, L for <=, G for >= and R for ranged row
793     **/
794COINLIBAPI char COINLINKAGE
795Osi_getRowSense(void *osi, int row);
796
797/** @brief Returns solution vector in OsiSolverInterface object */
798COINLIBAPI const double * COINLINKAGE
799Osi_getColSolution( void *osi );
800
801
802/*@}*/
803
804/** \name OsiCuts related routines (used in callbacks) */
805//@{
806
807/** adds a row cut (used in callback) */
808COINLIBAPI void COINLINKAGE
809OsiCuts_addRowCut( void *osiCuts, int nz, const int *idx, const double *coef, char sense, double rhs );
810
811/*@}*/
812
813#ifdef __cplusplus
814}
815#endif
816#endif
817
818/* vi: softtabstop=2 shiftwidth=2 expandtab tabstop=2
819*/
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