Scippy

SCIP

Solving Constraint Integer Programs

cons_abspower.h
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3 /* This file is part of the program and library */
4 /* SCIP --- Solving Constraint Integer Programs */
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24 
25 /**@file cons_abspower.h
26  * @ingroup CONSHDLRS
27  * @brief some API functions of removed constraint handler for absolute power constraints \f$\textrm{lhs} \leq \textrm{sign}(x+a) |x+a|^n + c z \leq \textrm{rhs}\f$
28  * @author Stefan Vigerske
29  */
30 
31 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
32 
33 #ifndef __SCIP_CONS_ABSPOWER_H__
34 #define __SCIP_CONS_ABSPOWER_H__
35 
36 #include "scip/def.h"
37 #include "scip/type_cons.h"
38 #include "scip/type_retcode.h"
39 #include "scip/type_scip.h"
40 #include "scip/type_var.h"
41 #include "scip/type_nlp.h"
42 
43 #ifdef __cplusplus
44 extern "C" {
45 #endif
46 
47 /**@addtogroup CONSHDLRS
48  *
49  * @{
50  *
51  * @name Abspower Constraints (deprecated)
52  *
53  * @{
54  *
55  */
56 
57 /** creates and captures an absolute power nonlinear constraint
58  *
59  * @note the constraint gets captured, hence at one point you have to release it using the method SCIPreleaseCons()
60  *
61  * @deprecated Use SCIPcreateConsNonlinear() instead.
62  */
63 SCIP_EXPORT
65  SCIP* scip, /**< SCIP data structure */
66  SCIP_CONS** cons, /**< pointer to hold the created constraint */
67  const char* name, /**< name of constraint */
68  SCIP_VAR* x, /**< nonlinear variable x in constraint */
69  SCIP_VAR* z, /**< linear variable z in constraint */
70  SCIP_Real exponent, /**< exponent n of |x+offset|^n term in constraint */
71  SCIP_Real xoffset, /**< offset in |x+offset|^n term in constraint */
72  SCIP_Real zcoef, /**< coefficient of z in constraint */
73  SCIP_Real lhs, /**< left hand side of constraint */
74  SCIP_Real rhs, /**< right hand side of constraint */
75  SCIP_Bool initial, /**< should the LP relaxation of constraint be in the initial LP?
76  * Usually set to TRUE. Set to FALSE for 'lazy constraints'. */
77  SCIP_Bool separate, /**< should the constraint be separated during LP processing?
78  * Usually set to TRUE. */
79  SCIP_Bool enforce, /**< should the constraint be enforced during node processing?
80  * TRUE for model constraints, FALSE for additional, redundant constraints. */
81  SCIP_Bool check, /**< should the constraint be checked for feasibility?
82  * TRUE for model constraints, FALSE for additional, redundant constraints. */
83  SCIP_Bool propagate, /**< should the constraint be propagated during node processing?
84  * Usually set to TRUE. */
85  SCIP_Bool local, /**< is constraint only valid locally?
86  * Usually set to FALSE. Has to be set to TRUE, e.g., for branching constraints. */
87  SCIP_Bool modifiable, /**< is constraint modifiable (subject to column generation)?
88  * Usually set to FALSE. In column generation applications, set to TRUE if pricing
89  * adds coefficients to this constraint. */
90  SCIP_Bool dynamic, /**< is constraint subject to aging?
91  * Usually set to FALSE. Set to TRUE for own cuts which
92  * are separated as constraints. */
93  SCIP_Bool removable, /**< should the relaxation be removed from the LP due to aging or cleanup?
94  * Usually set to FALSE. Set to TRUE for 'lazy constraints' and 'user cuts'. */
95  SCIP_Bool stickingatnode /**< should the constraint always be kept at the node where it was added, even
96  * if it may be moved to a more global node?
97  * Usually set to FALSE. Set to TRUE to for constraints that represent node data. */
98  );
99 
100 /** creates and captures an absolute power nonlinear constraint
101  * in its most basic version, i.e., all constraint flags are set to their basic value
102  *
103  * All flags can be set via SCIPconsSetFLAGNAME-methods.
104  *
105  * @see SCIPcreateConsAbspower() for information about the basic constraint flag configuration
106  *
107  * @note the constraint gets captured, hence at one point you have to release it using the method SCIPreleaseCons()
108  *
109  * @deprecated Use SCIPcreateConsBasicNonlinear() instead.
110  */
111 SCIP_EXPORT
113  SCIP* scip, /**< SCIP data structure */
114  SCIP_CONS** cons, /**< pointer to hold the created constraint */
115  const char* name, /**< name of constraint */
116  SCIP_VAR* x, /**< nonlinear variable x in constraint */
117  SCIP_VAR* z, /**< linear variable z in constraint */
118  SCIP_Real exponent, /**< exponent n of |x+offset|^n term in constraint */
119  SCIP_Real xoffset, /**< offset in |x+offset|^n term in constraint */
120  SCIP_Real zcoef, /**< coefficient of z in constraint */
121  SCIP_Real lhs, /**< left hand side of constraint */
122  SCIP_Real rhs /**< right hand side of constraint */
123  );
124 
125 /** gets the absolute power constraint as a nonlinear row representation
126  *
127  * @deprecated Use SCIPgetNlRowNonlinear() instead.
128  */
129 SCIP_EXPORT
131  SCIP* scip, /**< SCIP data structure */
132  SCIP_CONS* cons, /**< constraint */
133  SCIP_NLROW** nlrow /**< a buffer where to store pointer to nonlinear row */
134  );
135 
136 /** @} */
137 
138 /** @} */
139 
140 #ifdef __cplusplus
141 }
142 #endif
143 
144 #endif
type definitions for NLP management
enum SCIP_Retcode SCIP_RETCODE
Definition: type_retcode.h:63
type definitions for return codes for SCIP methods
SCIP_VAR ** x
Definition: circlepacking.c:63
SCIP_RETCODE SCIPcreateConsBasicAbspower(SCIP *scip, SCIP_CONS **cons, const char *name, SCIP_VAR *x, SCIP_VAR *z, SCIP_Real exponent, SCIP_Real xoffset, SCIP_Real zcoef, SCIP_Real lhs, SCIP_Real rhs)
type definitions for SCIP&#39;s main datastructure
type definitions for problem variables
#define SCIP_Bool
Definition: def.h:93
SCIP_RETCODE SCIPgetNlRowAbspower(SCIP *scip, SCIP_CONS *cons, SCIP_NLROW **nlrow)
SCIP_RETCODE SCIPcreateConsAbspower(SCIP *scip, SCIP_CONS **cons, const char *name, SCIP_VAR *x, SCIP_VAR *z, SCIP_Real exponent, SCIP_Real xoffset, SCIP_Real zcoef, SCIP_Real lhs, SCIP_Real rhs, SCIP_Bool initial, SCIP_Bool separate, SCIP_Bool enforce, SCIP_Bool check, SCIP_Bool propagate, SCIP_Bool local, SCIP_Bool modifiable, SCIP_Bool dynamic, SCIP_Bool removable, SCIP_Bool stickingatnode)
Definition: cons_abspower.c:43
#define SCIP_Real
Definition: def.h:186
common defines and data types used in all packages of SCIP
type definitions for constraints and constraint handlers