Scippy

SCIP

Solving Constraint Integer Programs

nlpi.h
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1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2 /* */
3 /* This file is part of the program and library */
4 /* SCIP --- Solving Constraint Integer Programs */
5 /* */
6 /* Copyright 2002-2022 Zuse Institute Berlin */
7 /* */
8 /* Licensed under the Apache License, Version 2.0 (the "License"); */
9 /* you may not use this file except in compliance with the License. */
10 /* You may obtain a copy of the License at */
11 /* */
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13 /* */
14 /* Unless required by applicable law or agreed to in writing, software */
15 /* distributed under the License is distributed on an "AS IS" BASIS, */
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17 /* See the License for the specific language governing permissions and */
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19 /* */
20 /* You should have received a copy of the Apache-2.0 license */
21 /* along with SCIP; see the file LICENSE. If not visit scipopt.org. */
22 /* */
23 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
24 
25 /**@file nlpi.h
26  * @ingroup INTERNALAPI
27  * @brief internal methods for NLP solver interfaces
28  * @author Stefan Vigerske
29  * @author Thorsten Gellermann
30  */
31 
32 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
33 
34 #ifndef __SCIP_NLPI_H__
35 #define __SCIP_NLPI_H__
36 
37 #include "scip/type_nlpi.h"
38 #include "scip/type_misc.h"
39 #include "scip/type_set.h"
40 #include "scip/type_stat.h"
41 #include "blockmemshell/memory.h"
42 
43 #ifdef __cplusplus
44 extern "C" {
45 #endif
46 
47 /** creates an NLP solver interface */
49  SCIP_NLPI** nlpi, /**< pointer to NLP interface data structure */
50  const char* name, /**< name of NLP interface */
51  const char* description, /**< description of NLP interface */
52  int priority, /**< priority of NLP interface */
53  SCIP_DECL_NLPICOPY ((*nlpicopy)), /**< copying of NLPI, can be NULL */
54  SCIP_DECL_NLPIFREE ((*nlpifree)), /**< free NLPI user data */
55  SCIP_DECL_NLPIGETSOLVERPOINTER ((*nlpigetsolverpointer)), /**< get solver pointer, can be NULL */
56  SCIP_DECL_NLPICREATEPROBLEM ((*nlpicreateproblem)), /**< create a new problem instance */
57  SCIP_DECL_NLPIFREEPROBLEM ((*nlpifreeproblem)), /**< free a problem instance */
58  SCIP_DECL_NLPIGETPROBLEMPOINTER ((*nlpigetproblempointer)), /**< get problem pointer, can be NULL */
59  SCIP_DECL_NLPIADDVARS ((*nlpiaddvars)), /**< add variables */
60  SCIP_DECL_NLPIADDCONSTRAINTS ((*nlpiaddconstraints)), /**< add constraints */
61  SCIP_DECL_NLPISETOBJECTIVE ((*nlpisetobjective)), /**< set objective */
62  SCIP_DECL_NLPICHGVARBOUNDS ((*nlpichgvarbounds)), /**< change variable bounds */
63  SCIP_DECL_NLPICHGCONSSIDES ((*nlpichgconssides)), /**< change constraint sides */
64  SCIP_DECL_NLPIDELVARSET ((*nlpidelvarset)), /**< delete a set of constraints */
65  SCIP_DECL_NLPIDELCONSSET ((*nlpidelconsset)), /**< delete a set of constraints */
66  SCIP_DECL_NLPICHGLINEARCOEFS ((*nlpichglinearcoefs)), /**< change coefficients in linear part of a constraint or objective */
67  SCIP_DECL_NLPICHGEXPR ((*nlpichgexpr)), /**< change nonlinear expression a constraint or objective */
68  SCIP_DECL_NLPICHGOBJCONSTANT ((*nlpichgobjconstant)), /**< change the constant offset in the objective */
69  SCIP_DECL_NLPISETINITIALGUESS ((*nlpisetinitialguess)), /**< set initial guess, can be NULL */
70  SCIP_DECL_NLPISOLVE ((*nlpisolve)), /**< solve NLP */
71  SCIP_DECL_NLPIGETSOLSTAT ((*nlpigetsolstat)), /**< get solution status */
72  SCIP_DECL_NLPIGETTERMSTAT ((*nlpigettermstat)), /**< get termination status */
73  SCIP_DECL_NLPIGETSOLUTION ((*nlpigetsolution)), /**< get solution */
74  SCIP_DECL_NLPIGETSTATISTICS ((*nlpigetstatistics)), /**< get solve statistics */
75  SCIP_NLPIDATA* nlpidata /**< NLP interface local data */
76  );
77 
78 /** sets NLP solver priority */
80  SCIP_NLPI* nlpi, /**< NLP interface structure */
81  int priority /**< new priority of NLPI */
82  );
83 
84 /** copies an NLPI and includes it into another SCIP instance */
86  SCIP_NLPI* sourcenlpi, /**< the NLP interface to copy */
87  SCIP_SET* targetset /**< global SCIP settings where to include copy */
88  );
89 
90 /** frees NLPI */
92  SCIP_NLPI** nlpi, /**< pointer to NLPI data structure */
93  SCIP_SET* set /**< global SCIP settings */
94  );
95 
96 /** initializes NLPI */
97 void SCIPnlpiInit(
98  SCIP_NLPI* nlpi /**< solver interface */
99  );
100 
101 /** gets pointer for NLP solver */
103  SCIP_SET* set, /**< global SCIP settings */
104  SCIP_NLPI* nlpi, /**< solver interface */
105  SCIP_NLPIPROBLEM* problem /**< problem instance, or NULL */
106  );
107 
108 /** creates a problem instance */
110  SCIP_SET* set, /**< global SCIP settings */
111  SCIP_NLPI* nlpi, /**< solver interface */
112  SCIP_NLPIPROBLEM** problem, /**< problem pointer to store the problem data */
113  const char* name /**< name of problem, can be NULL */
114  );
115 
116 /** frees a problem instance */
118  SCIP_SET* set, /**< global SCIP settings */
119  SCIP_NLPI* nlpi, /**< solver interface */
120  SCIP_NLPIPROBLEM** problem /**< pointer where problem instance is stored */
121  );
122 
123 /** gets pointer to solver-internal problem instance */
125  SCIP_SET* set, /**< global SCIP settings */
126  SCIP_NLPI* nlpi, /**< solver interface */
127  SCIP_NLPIPROBLEM* problem /**< problem instance */
128  );
129 
130 /** add variables to nlpi */
132  SCIP_SET* set, /**< global SCIP settings */
133  SCIP_NLPI* nlpi, /**< solver interface */
134  SCIP_NLPIPROBLEM* problem, /**< problem instance */
135  int nvars, /**< number of variables */
136  const SCIP_Real* lbs, /**< lower bounds of variables, can be NULL if -infinity */
137  const SCIP_Real* ubs, /**< upper bounds of variables, can be NULL if +infinity */
138  const char** varnames /**< names of variables, can be NULL */
139  );
140 
141 /** add constraints to nlpi */
143  SCIP_SET* set, /**< global SCIP settings */
144  SCIP_NLPI* nlpi, /**< solver interface */
145  SCIP_NLPIPROBLEM* problem, /**< problem instance */
146  int nconss, /**< number of constraints */
147  const SCIP_Real* lhss, /**< left hand sides of constraints, can be NULL if -infinity */
148  const SCIP_Real* rhss, /**< right hand sides of constraints, can be NULL if +infinity */
149  const int* nlininds, /**< number of linear coefficients for each constraint, may be NULL in case of no linear part */
150  int* const* lininds, /**< indices of variables for linear coefficients for each constraint, may be NULL in case of no linear part */
151  SCIP_Real* const* linvals, /**< values of linear coefficient for each constraint, may be NULL in case of no linear part */
152  SCIP_EXPR** exprs, /**< expressions for nonlinear part of constraints, entry of array may be NULL in case of no nonlinear part, may be NULL in case of no nonlinear part in any constraint */
153  const char** names /**< names of constraints, may be NULL or entries may be NULL */
154  );
155 
156 /** sets or overwrites objective, a minimization problem is expected */
158  SCIP_SET* set, /**< global SCIP settings */
159  SCIP_NLPI* nlpi, /**< solver interface */
160  SCIP_NLPIPROBLEM* problem, /**< problem instance */
161  int nlins, /**< number of linear variables */
162  const int* lininds, /**< variable indices, may be NULL in case of no linear part */
163  const SCIP_Real* linvals, /**< coefficient values, may be NULL in case of no linear part */
164  SCIP_EXPR* expr, /**< expression for nonlinear part of objective function, may be NULL in case of no nonlinear part */
165  const SCIP_Real constant /**< objective value offset */
166  );
167 
168 /** change variable bounds */
170  SCIP_SET* set, /**< global SCIP settings */
171  SCIP_NLPI* nlpi, /**< solver interface */
172  SCIP_NLPIPROBLEM* problem, /**< problem instance */
173  const int nvars, /**< number of variables to change bounds */
174  const int* indices, /**< indices of variables to change bounds */
175  const SCIP_Real* lbs, /**< new lower bounds */
176  const SCIP_Real* ubs /**< new upper bounds */
177  );
178 
179 /** change constraint sides */
181  SCIP_SET* set, /**< global SCIP settings */
182  SCIP_NLPI* nlpi, /**< solver interface */
183  SCIP_NLPIPROBLEM* problem, /**< problem instance */
184  int nconss, /**< number of constraints to change sides */
185  const int* indices, /**< indices of constraints to change sides */
186  const SCIP_Real* lhss, /**< new left hand sides */
187  const SCIP_Real* rhss /**< new right hand sides */
188  );
189 
190 /** delete a set of variables */
192  SCIP_SET* set, /**< global SCIP settings */
193  SCIP_NLPI* nlpi, /**< solver interface */
194  SCIP_NLPIPROBLEM* problem, /**< problem instance */
195  int* dstats, /**< deletion status of vars; 1 if var should be deleted, 0 if not */
196  int dstatssize /**< size of the dstats array */
197  );
198 
199 /** delete a set of constraints */
201  SCIP_SET* set, /**< global SCIP settings */
202  SCIP_NLPI* nlpi, /**< solver interface */
203  SCIP_NLPIPROBLEM* problem, /**< problem instance */
204  int* dstats, /**< deletion status of constraints; 1 if constraint should be deleted, 0 if not */
205  int dstatssize /**< size of the dstats array */
206  );
207 
208 /** changes or adds linear coefficients in a constraint or objective */
210  SCIP_SET* set, /**< global SCIP settings */
211  SCIP_NLPI* nlpi, /**< solver interface */
212  SCIP_NLPIPROBLEM* problem, /**< problem instance */
213  int idx, /**< index of constraint or -1 for objective */
214  int nvals, /**< number of values in linear constraint to change */
215  const int* varidxs, /**< indices of variables which coefficient to change */
216  const SCIP_Real* vals /**< new values for coefficients */
217  );
218 
219 /** change the expression in the nonlinear part */
221  SCIP_SET* set, /**< global SCIP settings */
222  SCIP_NLPI* nlpi, /**< solver interface */
223  SCIP_NLPIPROBLEM* problem, /**< problem instance */
224  int idxcons, /**< index of constraint or -1 for objective */
225  SCIP_EXPR* expr /**< new expression for constraint or objective, or NULL to only remove previous tree */
226  );
227 
228 /** change the constant offset in the objective */
230  SCIP_SET* set, /**< global SCIP settings */
231  SCIP_NLPI* nlpi, /**< solver interface */
232  SCIP_NLPIPROBLEM* problem, /**< problem instance */
233  SCIP_Real objconstant /**< new value for objective constant */
234  );
235 
236 /** sets initial guess for primal variables */
238  SCIP_SET* set, /**< global SCIP settings */
239  SCIP_NLPI* nlpi, /**< solver interface */
240  SCIP_NLPIPROBLEM* problem, /**< problem instance */
241  SCIP_Real* primalvalues, /**< initial primal values for variables, or NULL to clear previous values */
242  SCIP_Real* consdualvalues, /**< initial dual values for constraints, or NULL to clear previous values */
243  SCIP_Real* varlbdualvalues, /**< initial dual values for variable lower bounds, or NULL to clear previous values */
244  SCIP_Real* varubdualvalues /**< initial dual values for variable upper bounds, or NULL to clear previous values */
245  );
246 
247 /** tries to solve NLP */
249  SCIP_SET* set, /**< global SCIP settings */
250  SCIP_STAT* stat, /**< problem statistics */
251  SCIP_NLPI* nlpi, /**< solver interface */
252  SCIP_NLPIPROBLEM* problem, /**< problem instance */
253  SCIP_NLPPARAM* param /**< solve parameters */
254  );
255 
256 /** gives solution status */
258  SCIP_SET* set, /**< global SCIP settings */
259  SCIP_NLPI* nlpi, /**< solver interface */
260  SCIP_NLPIPROBLEM* problem /**< problem instance */
261  );
262 
263 /** gives termination reason */
265  SCIP_SET* set, /**< global SCIP settings */
266  SCIP_NLPI* nlpi, /**< solver interface */
267  SCIP_NLPIPROBLEM* problem /**< problem instance */
268  );
269 
270 /** gives primal and dual solution
271  * for a ranged constraint, the dual variable is positive if the right hand side is active and negative if the left hand side is active
272  */
274  SCIP_SET* set, /**< global SCIP settings */
275  SCIP_NLPI* nlpi, /**< solver interface */
276  SCIP_NLPIPROBLEM* problem, /**< problem instance */
277  SCIP_Real** primalvalues, /**< buffer to store pointer to array to primal values, or NULL if not needed */
278  SCIP_Real** consdualvalues, /**< buffer to store pointer to array to dual values of constraints, or NULL if not needed */
279  SCIP_Real** varlbdualvalues, /**< buffer to store pointer to array to dual values of variable lower bounds, or NULL if not needed */
280  SCIP_Real** varubdualvalues, /**< buffer to store pointer to array to dual values of variable lower bounds, or NULL if not needed */
281  SCIP_Real* objval /**< pointer to store the objective value, or NULL if not needed */
282  );
283 
284 /** gives solve statistics */
286  SCIP_SET* set, /**< global SCIP settings */
287  SCIP_NLPI* nlpi, /**< solver interface */
288  SCIP_NLPIPROBLEM* problem, /**< problem instance */
289  SCIP_NLPSTATISTICS* statistics /**< pointer to store statistics */
290  );
291 
292 #ifdef __cplusplus
293 }
294 #endif
295 
296 #endif /* __SCIP_NLPI_H__ */
#define SCIP_DECL_NLPIGETSOLVERPOINTER(x)
Definition: type_nlpi.h:243
SCIP_RETCODE SCIPnlpiCopyInclude(SCIP_NLPI *sourcenlpi, SCIP_SET *targetset)
Definition: nlpi.c:167
enum SCIP_NlpTermStat SCIP_NLPTERMSTAT
Definition: type_nlpi.h:194
SCIP_RETCODE SCIPnlpiAddConstraints(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, int nconss, const SCIP_Real *lhss, const SCIP_Real *rhss, const int *nlininds, int *const *lininds, SCIP_Real *const *linvals, SCIP_EXPR **exprs, const char **names)
Definition: nlpi.c:325
type definitions for miscellaneous datastructures
void * SCIPnlpiGetProblemPointer(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem)
Definition: nlpi.c:285
void SCIPnlpiSetPriority(SCIP_NLPI *nlpi, int priority)
Definition: nlpi.c:156
#define SCIP_DECL_NLPIGETTERMSTAT(x)
Definition: type_nlpi.h:524
enum SCIP_Retcode SCIP_RETCODE
Definition: type_retcode.h:63
type definitions for global SCIP settings
#define SCIP_DECL_NLPIGETSOLUTION(x)
Definition: type_nlpi.h:545
#define SCIP_DECL_NLPICHGOBJCONSTANT(x)
Definition: type_nlpi.h:463
SCIP_RETCODE SCIPnlpiGetSolution(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, SCIP_Real **primalvalues, SCIP_Real **consdualvalues, SCIP_Real **varlbdualvalues, SCIP_Real **varubdualvalues, SCIP_Real *objval)
Definition: nlpi.c:653
SCIP_RETCODE SCIPnlpiAddVars(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, int nvars, const SCIP_Real *lbs, const SCIP_Real *ubs, const char **varnames)
Definition: nlpi.c:302
type definitions for problem statistics
#define SCIP_DECL_NLPIGETPROBLEMPOINTER(x)
Definition: type_nlpi.h:282
SCIP_NLPTERMSTAT SCIPnlpiGetTermstat(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem)
Definition: nlpi.c:636
void * SCIPnlpiGetSolverPointer(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem)
Definition: nlpi.c:228
#define SCIP_DECL_NLPIADDCONSTRAINTS(x)
Definition: type_nlpi.h:320
SCIP_RETCODE SCIPnlpiSetInitialGuess(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, SCIP_Real *primalvalues, SCIP_Real *consdualvalues, SCIP_Real *varlbdualvalues, SCIP_Real *varubdualvalues)
Definition: nlpi.c:528
struct SCIP_NlpiData SCIP_NLPIDATA
Definition: type_nlpi.h:52
enum SCIP_NlpSolStat SCIP_NLPSOLSTAT
Definition: type_nlpi.h:168
SCIP_RETCODE SCIPnlpiChgVarBounds(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, const int nvars, const int *indices, const SCIP_Real *lbs, const SCIP_Real *ubs)
Definition: nlpi.c:376
#define SCIP_DECL_NLPICOPY(x)
Definition: type_nlpi.h:215
#define SCIP_DECL_NLPICHGVARBOUNDS(x)
Definition: type_nlpi.h:364
SCIP_RETCODE SCIPnlpiCreateProblem(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM **problem, const char *name)
Definition: nlpi.c:244
#define SCIP_DECL_NLPIGETSTATISTICS(x)
Definition: type_nlpi.h:562
SCIP_RETCODE SCIPnlpiGetStatistics(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, SCIP_NLPSTATISTICS *statistics)
Definition: nlpi.c:675
#define SCIP_DECL_NLPIDELVARSET(x)
Definition: type_nlpi.h:400
#define SCIP_DECL_NLPICHGCONSSIDES(x)
Definition: type_nlpi.h:383
SCIP_RETCODE SCIPnlpiCreate(SCIP_NLPI **nlpi, const char *name, const char *description, int priority, SCIP_DECL_NLPICOPY((*nlpicopy)), SCIP_DECL_NLPIFREE((*nlpifree)), SCIP_DECL_NLPIGETSOLVERPOINTER((*nlpigetsolverpointer)), SCIP_DECL_NLPICREATEPROBLEM((*nlpicreateproblem)), SCIP_DECL_NLPIFREEPROBLEM((*nlpifreeproblem)), SCIP_DECL_NLPIGETPROBLEMPOINTER((*nlpigetproblempointer)), SCIP_DECL_NLPIADDVARS((*nlpiaddvars)), SCIP_DECL_NLPIADDCONSTRAINTS((*nlpiaddconstraints)), SCIP_DECL_NLPISETOBJECTIVE((*nlpisetobjective)), SCIP_DECL_NLPICHGVARBOUNDS((*nlpichgvarbounds)), SCIP_DECL_NLPICHGCONSSIDES((*nlpichgconssides)), SCIP_DECL_NLPIDELVARSET((*nlpidelvarset)), SCIP_DECL_NLPIDELCONSSET((*nlpidelconsset)), SCIP_DECL_NLPICHGLINEARCOEFS((*nlpichglinearcoefs)), SCIP_DECL_NLPICHGEXPR((*nlpichgexpr)), SCIP_DECL_NLPICHGOBJCONSTANT((*nlpichgobjconstant)), SCIP_DECL_NLPISETINITIALGUESS((*nlpisetinitialguess)), SCIP_DECL_NLPISOLVE((*nlpisolve)), SCIP_DECL_NLPIGETSOLSTAT((*nlpigetsolstat)), SCIP_DECL_NLPIGETTERMSTAT((*nlpigettermstat)), SCIP_DECL_NLPIGETSOLUTION((*nlpigetsolution)), SCIP_DECL_NLPIGETSTATISTICS((*nlpigetstatistics)), SCIP_NLPIDATA *nlpidata)
Definition: nlpi.c:53
SCIP_RETCODE SCIPnlpiChgExpr(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, int idxcons, SCIP_EXPR *expr)
Definition: nlpi.c:487
SCIP_RETCODE SCIPnlpiDelVarSet(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, int *dstats, int dstatssize)
Definition: nlpi.c:422
SCIP_RETCODE SCIPnlpiChgLinearCoefs(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, int idx, int nvals, const int *varidxs, const SCIP_Real *vals)
Definition: nlpi.c:464
SCIP_NLPSOLSTAT SCIPnlpiGetSolstat(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem)
Definition: nlpi.c:621
SCIP_RETCODE SCIPnlpiFreeProblem(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM **problem)
Definition: nlpi.c:266
SCIP_RETCODE SCIPnlpiSolve(SCIP_SET *set, SCIP_STAT *stat, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, SCIP_NLPPARAM *param)
Definition: nlpi.c:551
#define SCIP_DECL_NLPIFREE(x)
Definition: type_nlpi.h:225
#define SCIP_DECL_NLPISETINITIALGUESS(x)
Definition: type_nlpi.h:481
#define SCIP_Real
Definition: def.h:186
#define SCIP_DECL_NLPICREATEPROBLEM(x)
Definition: type_nlpi.h:255
#define SCIP_DECL_NLPISOLVE(x)
Definition: type_nlpi.h:497
#define SCIP_DECL_NLPICHGEXPR(x)
Definition: type_nlpi.h:449
#define SCIP_DECL_NLPIFREEPROBLEM(x)
Definition: type_nlpi.h:267
void SCIPnlpiInit(SCIP_NLPI *nlpi)
Definition: nlpi.c:211
#define SCIP_DECL_NLPISETOBJECTIVE(x)
Definition: type_nlpi.h:344
SCIP_RETCODE SCIPnlpiChgConsSides(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, int nconss, const int *indices, const SCIP_Real *lhss, const SCIP_Real *rhss)
Definition: nlpi.c:399
#define SCIP_DECL_NLPIGETSOLSTAT(x)
Definition: type_nlpi.h:511
SCIP_RETCODE SCIPnlpiSetObjective(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, int nlins, const int *lininds, const SCIP_Real *linvals, SCIP_EXPR *expr, const SCIP_Real constant)
Definition: nlpi.c:352
SCIP_RETCODE SCIPnlpiDelConsSet(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, int *dstats, int dstatssize)
Definition: nlpi.c:443
#define SCIP_DECL_NLPIDELCONSSET(x)
Definition: type_nlpi.h:415
SCIP_RETCODE SCIPnlpiFree(SCIP_NLPI **nlpi, SCIP_SET *set)
Definition: nlpi.c:184
SCIP_RETCODE SCIPnlpiChgObjConstant(SCIP_SET *set, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, SCIP_Real objconstant)
Definition: nlpi.c:508
#define SCIP_DECL_NLPICHGLINEARCOEFS(x)
Definition: type_nlpi.h:432
type definitions for NLP solver interfaces
#define SCIP_DECL_NLPIADDVARS(x)
Definition: type_nlpi.h:297
memory allocation routines