1    	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2    	/*                                                                           */
3    	/*                  This file is part of the program and library             */
4    	/*         SCIP --- Solving Constraint Integer Programs                      */
5    	/*                                                                           */
6    	/*  Copyright (c) 2002-2023 Zuse Institute Berlin (ZIB)                      */
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   	/*                                                                           */
12   	/*      http://www.apache.org/licenses/LICENSE-2.0                           */
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,        */
16   	/*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
17   	/*  See the License for the specific language governing permissions and      */
18   	/*  limitations under the License.                                           */
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   objconshdlr.h
26   	 * @brief  C++ wrapper for constraint handlers
27   	 * @author Tobias Achterberg
28   	 */
29   	
30   	/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
31   	
32   	#ifndef __SCIP_OBJCONSHDLR_H__
33   	#define __SCIP_OBJCONSHDLR_H__
34   	
35   	
36   	#include <cassert>
37   	#include <cstring>
38   	#include <utility>
39   	
40   	#include "scip/scip.h"
41   	#include "objscip/objprobcloneable.h"
42   	
43   	namespace scip
44   	{
45   	
46   	/** @brief C++ wrapper for constraint handlers
47   	 *
48   	 *  This class defines the interface for constraint handlers implemented in C++. Note that there are pure virtual
49   	 *  functions (these have to be implemented). These functions are: scip_trans(), scip_enfolp(), scip_enforelax(),
50   	 *  scip_enfops(), scip_check(), and scip_lock().
51   	 *
52   	 *  - \ref CONS "Instructions for implementing a constraint handler"
53   	 *  - \ref CONSHDLRS "List of available constraint handlers"
54   	 *  - \ref type_cons.h "Corresponding C interface"
55   	 */
56   	class ObjConshdlr : public ObjProbCloneable
57   	{
58   	public:
59   	   /*lint --e{1540}*/
60   	
61   	   /** SCIP data structure */
62   	   SCIP* scip_;
63   	
64   	   /** name of the constraint handler */
65   	   char* scip_name_;
66   	
67   	   /** description of the constraint handler */
68   	   char* scip_desc_;
69   	
70   	   /** default separation priority of the constraint handler */
71   	   const int scip_sepapriority_;
72   	
73   	   /** default enforcing priority of the constraint handler */
74   	   const int scip_enfopriority_;
75   	
76   	   /** default checking priority of the constraint handler */
77   	   const int scip_checkpriority_;
78   	
79   	   /** default separation frequency of the constraint handler */
80   	   const int scip_sepafreq_;
81   	
82   	   /** default propagation frequency of the constraint handler */
83   	   const int scip_propfreq_;
84   	
85   	   /** default frequency of the constraint handler for eager evaluations in separation, propagation and enforcement */
86   	   const int scip_eagerfreq_;
87   	
88   	   /** maximal number of presolving rounds the constraint handler participates in (-1: no limit) */
89   	   const int scip_maxprerounds_;
90   	
91   	   /** should separation method be delayed, if other separators found cuts? */
92   	   const SCIP_Bool scip_delaysepa_;
93   	
94   	   /** should propagation method be delayed, if other propagators found reductions? */
95   	   const SCIP_Bool scip_delayprop_;
96   	
97   	   /** should the constraint handler be skipped, if no constraints are available? */
98   	   const SCIP_Bool scip_needscons_;
99   	
100  	   /** positions in the node solving loop where propagation method of constraint handler should be executed */
101  	   const SCIP_PROPTIMING scip_proptiming_;
102  	
103  	   /**< timing mask of the constraint handler's presolving method */
104  	   const SCIP_PRESOLTIMING scip_presoltiming_;
105  	
106  	   /** default constructor */
107  	   ObjConshdlr(
108  	      SCIP*              scip,               /**< SCIP data structure */
109  	      const char*        name,               /**< name of constraint handler */
110  	      const char*        desc,               /**< description of constraint handler */
111  	      int                sepapriority,       /**< priority of the constraint handler for separation */
112  	      int                enfopriority,       /**< priority of the constraint handler for constraint enforcing */
113  	      int                checkpriority,      /**< priority of the constraint handler for checking infeasibility (and propagation) */
114  	      int                sepafreq,           /**< frequency for separating cuts; zero means to separate only in the root node */
115  	      int                propfreq,           /**< frequency for propagating domains; zero means only preprocessing propagation */
116  	      int                eagerfreq,          /**< frequency for using all instead of only the useful constraints in separation,
117  	                                              *   propagation and enforcement, -1 for no eager evaluations, 0 for first only */
118  	      int                maxprerounds,       /**< maximal number of presolving rounds the constraint handler participates in (-1: no limit) */
119  	      SCIP_Bool          delaysepa,          /**< should separation method be delayed, if other separators found cuts? */
120  	      SCIP_Bool          delayprop,          /**< should propagation method be delayed, if other propagators found reductions? */
121  	      SCIP_Bool          needscons,          /**< should the constraint handler be skipped, if no constraints are available? */
122  	      SCIP_PROPTIMING    proptiming,         /**< positions in the node solving loop where propagation method of constraint handlers should be executed */
123  	      SCIP_PRESOLTIMING  presoltiming        /**< timing mask of the constraint handler's presolving method */
124  	      )
125  	      : scip_(scip),
126  	        scip_name_(0),
127  	        scip_desc_(0),
128  	        scip_sepapriority_(sepapriority),
129  	        scip_enfopriority_(enfopriority),
130  	        scip_checkpriority_(checkpriority),
131  	        scip_sepafreq_(sepafreq),
132  	        scip_propfreq_(propfreq),
133  	        scip_eagerfreq_(eagerfreq),
134  	        scip_maxprerounds_(maxprerounds),
135  	        scip_delaysepa_(delaysepa),
136  	        scip_delayprop_(delayprop),
137  	        scip_needscons_(needscons),
138  	        scip_proptiming_(proptiming),
139  	        scip_presoltiming_(presoltiming)
140  	   {
141  	      /* the macro SCIPduplicateMemoryArray does not need the first argument: */
142  	      SCIP_CALL_ABORT( SCIPduplicateMemoryArray(scip_, &scip_name_, name, std::strlen(name)+1) );
143  	      SCIP_CALL_ABORT( SCIPduplicateMemoryArray(scip_, &scip_desc_, desc, std::strlen(desc)+1) );
144  	   }
145  	
146  	   /** copy constructor */
147  	   ObjConshdlr(const ObjConshdlr& o)
148  	       : ObjConshdlr(o.scip_, o.scip_name_, o.scip_desc_, o.scip_sepapriority_, o.scip_enfopriority_,
149  	                     o.scip_checkpriority_, o.scip_sepafreq_, o.scip_propfreq_, o.scip_eagerfreq_, o.scip_maxprerounds_,
150  	                     o.scip_delaysepa_, o.scip_delayprop_, o.scip_needscons_, o.scip_proptiming_, o.scip_presoltiming_)
151  	   {
152  	   }
153  	
154  	   /** move constructor */
155  	   ObjConshdlr(ObjConshdlr&& o)
156  	       : scip_(o.scip_),
157  	         scip_name_(0),
158  	         scip_desc_(0),
159  	         scip_sepapriority_(o.scip_sepapriority_),
160  	         scip_enfopriority_(o.scip_enfopriority_),
161  	         scip_checkpriority_(o.scip_checkpriority_),
162  	         scip_sepafreq_(o.scip_sepafreq_),
163  	         scip_propfreq_(o.scip_propfreq_),
164  	         scip_eagerfreq_(o.scip_eagerfreq_),
165  	         scip_maxprerounds_(o.scip_maxprerounds_),
166  	         scip_delaysepa_(o.scip_delaysepa_),
167  	         scip_delayprop_(o.scip_delayprop_),
168  	         scip_needscons_(o.scip_needscons_),
169  	         scip_proptiming_(o.scip_proptiming_),
170  	         scip_presoltiming_(o.scip_presoltiming_)
171  	   {
172  	      std::swap(scip_name_, o.scip_name_);
173  	      std::swap(scip_desc_, o.scip_desc_);
174  	   }
175  	
176  	   /** destructor */
177  	   virtual ~ObjConshdlr()
178  	   {
179  	      /* the macro SCIPfreeMemoryArray does not need the first argument: */
180  	      /*lint --e{64}*/
181  	      SCIPfreeMemoryArray(scip_, &scip_name_);
182  	      SCIPfreeMemoryArray(scip_, &scip_desc_);
183  	   }
184  	
185  	   /** assignment of polymorphic classes causes slicing and is therefore disabled. */
186  	   ObjConshdlr& operator=(const ObjConshdlr& o) = delete;
187  	
188  	   /** assignment of polymorphic classes causes slicing and is therefore disabled. */
189  	   ObjConshdlr& operator=(ObjConshdlr&& o) = delete;
190  	
191  	   /** destructor of constraint handler to free user data (called when SCIP is exiting)
192  	    *
193  	    *  @see SCIP_DECL_CONSFREE(x) in @ref type_cons.h
194  	    */
195  	   virtual SCIP_DECL_CONSFREE(scip_free)
196  	   {  /*lint --e{715}*/
197  	      return SCIP_OKAY;
198  	   }
199  	
200  	   /** initialization method of constraint handler (called after problem has been transformed)
201  	    *
202  	    *  @see SCIP_DECL_CONSINIT(x) in @ref type_cons.h
203  	    */
204  	   virtual SCIP_DECL_CONSINIT(scip_init)
205  	   {  /*lint --e{715}*/
206  	      return SCIP_OKAY;
207  	   }
208  	
209  	   /** deinitialization method of constraint handler (called before transformed problem is freed)
210  	    *
211  	    *  @see SCIP_DECL_CONSEXIT(x) in @ref type_cons.h
212  	    */
213  	   virtual SCIP_DECL_CONSEXIT(scip_exit)
214  	   {  /*lint --e{715}*/
215  	      return SCIP_OKAY;
216  	   }
217  	
218  	   /** presolving initialization method of constraint handler (called when presolving is about to begin)
219  	    *
220  	    *  @see SCIP_DECL_CONSINITPRE(x) in @ref type_cons.h
221  	    */
222  	   virtual SCIP_DECL_CONSINITPRE(scip_initpre)
223  	   {  /*lint --e{715}*/
224  	      return SCIP_OKAY;
225  	   }
226  	
227  	   /** presolving deinitialization method of constraint handler (called after presolving has been finished)
228  	    *
229  	    *  @see SCIP_DECL_CONSEXITPRE(x) in @ref type_cons.h
230  	    */
231  	   virtual SCIP_DECL_CONSEXITPRE(scip_exitpre)
232  	   {  /*lint --e{715}*/
233  	      return SCIP_OKAY;
234  	   }
235  	
236  	   /** solving process initialization method of constraint handler (called when branch and bound process is about to begin)
237  	    *
238  	    *  @see SCIP_DECL_CONSINITSOL(x) in @ref type_cons.h
239  	    */
240  	   virtual SCIP_DECL_CONSINITSOL(scip_initsol)
241  	   {  /*lint --e{715}*/
242  	      return SCIP_OKAY;
243  	   }
244  	
245  	   /** solving process deinitialization method of constraint handler (called before branch and bound process data is freed)
246  	    *
247  	    *  @see SCIP_DECL_CONSEXITSOL(x) in @ref type_cons.h
248  	    */
249  	   virtual SCIP_DECL_CONSEXITSOL(scip_exitsol)
250  	   {  /*lint --e{715}*/
251  	      return SCIP_OKAY;
252  	   }
253  	
254  	   /** frees specific constraint data
255  	    *
256  	    *  @see SCIP_DECL_CONSDELETE(x) in @ref type_cons.h
257  	    */
258  	   virtual SCIP_DECL_CONSDELETE(scip_delete)
259  	   {  /*lint --e{715}*/
260  	      return SCIP_OKAY;
261  	   }
262  	
263  	   /** transforms constraint data into data belonging to the transformed problem
264  	    *
265  	    *  @see SCIP_DECL_CONSTRANS(x) in @ref type_cons.h
266  	    */
267  	   virtual SCIP_DECL_CONSTRANS(scip_trans) = 0;
268  	
269  	   /** LP initialization method of constraint handler (called before the initial LP relaxation at a node is solved)
270  	    *
271  	    *  @see SCIP_DECL_CONSINITLP(x) in @ref type_cons.h
272  	    */
273  	   virtual SCIP_DECL_CONSINITLP(scip_initlp)
274  	   {  /*lint --e{715}*/
275  	      return SCIP_OKAY;
276  	   }
277  	
278  	   /** separation method of constraint handler for LP solution
279  	    *
280  	    *  @see SCIP_DECL_CONSSEPALP(x) in @ref type_cons.h
281  	    */
282  	   virtual SCIP_DECL_CONSSEPALP(scip_sepalp)
283  	   {  /*lint --e{715}*/
284  	      assert(result != NULL);
285  	      *result = SCIP_DIDNOTRUN;
286  	      return SCIP_OKAY;
287  	   }
288  	
289  	   /** separation method of constraint handler for arbitrary primal solution
290  	    *
291  	    *  @see SCIP_DECL_CONSSEPASOL(x) in @ref type_cons.h
292  	    */
293  	   virtual SCIP_DECL_CONSSEPASOL(scip_sepasol)
294  	   {  /*lint --e{715}*/
295  	      assert(result != NULL);
296  	      *result = SCIP_DIDNOTRUN;
297  	      return SCIP_OKAY;
298  	   }
299  	
300  	   /** constraint enforcing method of constraint handler for LP solutions
301  	    *
302  	    *  @see SCIP_DECL_CONSENFOLP(x) in @ref type_cons.h
303  	    */
304  	   virtual SCIP_DECL_CONSENFOLP(scip_enfolp) = 0;
305  	
306  	   /** constraint enforcing method of constraint handler for relaxation solutions
307  	    *
308  	    *  @see SCIP_DECL_CONSENFORELAX(x) in @ref type_cons.h
309  	    */
310  	   virtual SCIP_DECL_CONSENFORELAX(scip_enforelax)
311  	   {  /*lint --e{715}*/
312  	      assert(result != NULL);
313  	      *result = SCIP_DIDNOTRUN;
314  	      return SCIP_OKAY;
315  	   }
316  	
317  	   /** constraint enforcing method of constraint handler for pseudo solutions
318  	    *
319  	    *  @see SCIP_DECL_CONSENFOPS(x) in @ref type_cons.h
320  	    */
321  	   virtual SCIP_DECL_CONSENFOPS(scip_enfops) = 0;
322  	
323  	   /** feasibility check method of constraint handler for primal solutions
324  	    *
325  	    *  @see SCIP_DECL_CONSCHECK(x) in @ref type_cons.h
326  	    */
327  	   virtual SCIP_DECL_CONSCHECK(scip_check) = 0;
328  	
329  	   /** domain propagation method of constraint handler
330  	    *
331  	    *  @see SCIP_DECL_CONSPROP(x) in @ref type_cons.h
332  	    */
333  	   virtual SCIP_DECL_CONSPROP(scip_prop)
334  	   {  /*lint --e{715}*/
335  	      assert(result != NULL);
336  	      *result = SCIP_DIDNOTRUN;
337  	      return SCIP_OKAY;
338  	   }
339  	
340  	   /** presolving method of constraint handler
341  	    *
342  	    *  @see SCIP_DECL_CONSPRESOL(x) in @ref type_cons.h
343  	    */
344  	   virtual SCIP_DECL_CONSPRESOL(scip_presol)
345  	   {  /*lint --e{715}*/
346  	      assert(result != NULL);
347  	      *result = SCIP_DIDNOTRUN;
348  	      return SCIP_OKAY;
349  	   }
350  	
351  	   /** propagation conflict resolving method of constraint handler
352  	    *
353  	    *  @see SCIP_DECL_CONSRESPROP(x) in @ref type_cons.h
354  	    */
355  	   virtual SCIP_DECL_CONSRESPROP(scip_resprop)
356  	   {  /*lint --e{715}*/
357  	      assert(result != NULL);
358  	      *result = SCIP_DIDNOTFIND;
359  	      return SCIP_OKAY;
360  	   }
361  	
362  	   /** variable rounding lock method of constraint handler
363  	    *
364  	    *  @see SCIP_DECL_CONSLOCK(x) in @ref type_cons.h
365  	    */
366  	   virtual SCIP_DECL_CONSLOCK(scip_lock) = 0;
367  	
368  	   /** constraint activation notification method of constraint handler
369  	    *
370  	    *  @see SCIP_DECL_CONSACTIVE(x) in @ref type_cons.h
371  	    */
372  	   virtual SCIP_DECL_CONSACTIVE(scip_active)
373  	   {  /*lint --e{715}*/
374  	      return SCIP_OKAY;
375  	   }
376  	
377  	   /** constraint deactivation notification method of constraint handler
378  	    *
379  	    *  @see SCIP_DECL_CONSDEACTIVE(x) in @ref type_cons.h
380  	    */
381  	   virtual SCIP_DECL_CONSDEACTIVE(scip_deactive)
382  	   {  /*lint --e{715}*/
383  	      return SCIP_OKAY;
384  	   }
385  	
386  	   /** constraint enabling notification method of constraint handler
387  	    *
388  	    *  @see SCIP_DECL_CONSENABLE(x) in @ref type_cons.h
389  	    */
390  	   virtual SCIP_DECL_CONSENABLE(scip_enable)
391  	   {  /*lint --e{715}*/
392  	      return SCIP_OKAY;
393  	   }
394  	
395  	   /** constraint disabling notification method of constraint handler
396  	    *
397  	    *  @see SCIP_DECL_CONSDISABLE(x) in @ref type_cons.h
398  	    */
399  	   virtual SCIP_DECL_CONSDISABLE(scip_disable)
400  	   {  /*lint --e{715}*/
401  	      return SCIP_OKAY;
402  	   }
403  	
404  	   /** variable deletion method of constraint handler
405  	    *
406  	    *  @see SCIP_DECL_CONSDELVARS(x) in @ref type_cons.h
407  	    */
408  	   virtual SCIP_DECL_CONSDELVARS(scip_delvars)
409  	   {  /*lint --e{715}*/
410  	      return SCIP_OKAY;
411  	   }
412  	
413  	   /** constraint display method of constraint handler
414  	    *
415  	    *  @see SCIP_DECL_CONSPRINT(x) in @ref type_cons.h
416  	    */
417  	   virtual SCIP_DECL_CONSPRINT(scip_print)
418  	   {  /*lint --e{715}*/
419  	      if ( file == NULL )
420  		 fprintf(stdout, "constraint handler <%s> does not support printing constraints\n", SCIPconshdlrGetName(conshdlr));
421  	      else
422  		 fprintf(file, "constraint handler <%s> does not support printing constraints\n", SCIPconshdlrGetName(conshdlr));
423  	      return SCIP_OKAY;
424  	   }
425  	
426  	   /** constraint copying method of constraint handler
427  	    *
428  	    *  @see SCIP_DECL_CONSCOPY(x) in @ref type_cons.h
429  	    */
430  	   virtual SCIP_DECL_CONSCOPY(scip_copy)
431  	   {  /*lint --e{715}*/
432  	      assert(valid != NULL);
433  	      *valid = FALSE;
434  	      return SCIP_OKAY;
435  	   }
436  	
437  	   /** constraint parsing method of constraint handler
438  	    *
439  	    *  @see SCIP_DECL_CONSPARSE(x) in @ref type_cons.h
440  	    */
441  	   virtual SCIP_DECL_CONSPARSE(scip_parse)
442  	   {  /*lint --e{715}*/
443  	      return SCIP_OKAY;
444  	   }
445  	
446  	   /** constraint method of constraint handler which returns the variables (if possible)
447  	    *
448  	    *  @see SCIP_DECL_CONSGETVARS(x) in @ref type_cons.h
449  	    */
450  	   virtual SCIP_DECL_CONSGETVARS(scip_getvars)
451  	   {  /*lint --e{715}*/
452  	      assert(success != NULL);
453  	      *success = FALSE;
454  	      return SCIP_OKAY;
455  	   }
456  	
457  	   /** constraint method of constraint handler which returns the number of variables (if possible)
458  	    *
459  	    *  @see SCIP_DECL_CONSGETNVARS(x) in @ref type_cons.h
460  	    */
461  	   virtual SCIP_DECL_CONSGETNVARS(scip_getnvars)
462  	   {  /*lint --e{715}*/
463  	      assert(nvars != NULL);
464  	      assert(success != NULL);
465  	
466  	      *nvars = 0;
467  	      *success = FALSE;
468  	
469  	      return SCIP_OKAY;
470  	   }
471  	
472  	   /** constraint handler method to suggest dive bound changes during the generic diving algorithm
473  	    *
474  	    *  @see SCIP_DECL_CONSGETDIVEBDCHGS(x) in @ref type_cons.h
475  	    */
476  	   virtual SCIP_DECL_CONSGETDIVEBDCHGS(scip_getdivebdchgs)
477  	   {  /*lint --e{715}*/
478  	      assert(success != NULL);
479  	      *success = FALSE;
480  	      return SCIP_OKAY;
481  	   }
482  	
483  	   /** constraint handler method which returns the permutation symmetry detection graph of a constraint (if possible)
484  	    *
485  	    *  @see SCIP_DECL_CONSGETPERMSYMGRAPH(x) in @ref type_cons.h
486  	    */
487  	   virtual SCIP_DECL_CONSGETPERMSYMGRAPH(scip_getpermsymgraph)
488  	   {  /*lint --e{715}*/
489  	      assert(success != NULL);
490  	      *success = FALSE;
491  	      return SCIP_OKAY;
492  	   }
493  	
494  	   /** constraint handler method which returns the signed permutation symmetry detection graph of a constraint (if possible)
495  	    *
496  	    *  @see SCIP_DECL_CONSGETSIGNEDPERMSYMGRAPH(x) in @ref type_cons.h
497  	    */
498  	   virtual SCIP_DECL_CONSGETSIGNEDPERMSYMGRAPH(scip_getsignedpermsymgraph)
499  	   {  /*lint --e{715}*/
500  	      assert(success != NULL);
501  	      *success = FALSE;
502  	      return SCIP_OKAY;
503  	   }
504  	};
505  	
506  	} /* namespace scip */
507  	
508  	
509  	
510  	/** creates the constraint handler for the given constraint handler object and includes it in SCIP
511  	 *
512  	 *  The method should be called in one of the following ways:
513  	 *
514  	 *   1. The user is resposible of deleting the object:
515  	 *       SCIP_CALL( SCIPcreate(&scip) );
516  	 *       ...
517  	 *       MyConshdlr* myconshdlr = new MyConshdlr(...);
518  	 *       SCIP_CALL( SCIPincludeObjConshdlr(scip, &myconshdlr, FALSE) );
519  	 *       ...
520  	 *       SCIP_CALL( SCIPfree(&scip) );
521  	 *       delete myconshdlr;    // delete conshdlr AFTER SCIPfree() !
522  	 *
523  	 *   2. The object pointer is passed to SCIP and deleted by SCIP in the SCIPfree() call:
524  	 *       SCIP_CALL( SCIPcreate(&scip) );
525  	 *       ...
526  	 *       SCIP_CALL( SCIPincludeObjConshdlr(scip, new MyConshdlr(...), TRUE) );
527  	 *       ...
528  	 *       SCIP_CALL( SCIPfree(&scip) );  // destructor of MyConshdlr is called here
529  	 */
530  	SCIP_EXPORT
531  	SCIP_RETCODE SCIPincludeObjConshdlr(
532  	   SCIP*                 scip,               /**< SCIP data structure */
533  	   scip::ObjConshdlr*    objconshdlr,        /**< constraint handler object */
534  	   SCIP_Bool             deleteobject        /**< should the constraint handler object be deleted when conshdlr is freed? */
535  	   );
536  	
537  	/** returns the conshdlr object of the given name, or 0 if not existing */
538  	SCIP_EXPORT
539  	scip::ObjConshdlr* SCIPfindObjConshdlr(
540  	   SCIP*                 scip,               /**< SCIP data structure */
541  	   const char*           name                /**< name of constraint handler */
542  	   );
543  	
544  	/** returns the conshdlr object for the given constraint handler */
545  	SCIP_EXPORT
546  	scip::ObjConshdlr* SCIPgetObjConshdlr(
547  	   SCIP*                 scip,               /**< SCIP data structure */
548  	   SCIP_CONSHDLR*        conshdlr            /**< constraint handler */
549  	   );
550  	
551  	#endif
552