Detailed Description

constraint handler for pseudoboolean constraints

Author: Stefan Heinz; Michael Winkler

The constraint handler deals with pseudo boolean constraints. These are constraints of the form

$\mbox{lhs} \leq \sum_{k=0}^m c_k \cdot x_k + \sum_{i=0}^n c_i \cdot \prod_{j \in I_i} x_j \leq \mbox{rhs}$

where all $x$ are binary and all $c$ are integer.

Definition in file cons_pseudoboolean.h.

#include "scip/scip.h"

Macros
#define	ARTIFICIALVARNAMEPREFIX "andresultant_"

Typedefs
typedef enum SCIP_LinearConsType	SCIP_LINEARCONSTYPE

Enumerations
enum	SCIP_LinearConsType { SCIP_LINEARCONSTYPE_INVALIDCONS = -1, SCIP_LINEARCONSTYPE_LINEAR = 0, SCIP_LINEARCONSTYPE_LOGICOR = 1, SCIP_LINEARCONSTYPE_KNAPSACK = 2, SCIP_LINEARCONSTYPE_SETPPC = 3 }

Functions
SCIP_RETCODE	SCIPincludeConshdlrPseudoboolean (SCIP *scip)

SCIP_RETCODE	SCIPcreateConsPseudobooleanWithConss (SCIP scip, SCIP_CONS cons, const char name, SCIP_CONS lincons, SCIP_LINEARCONSTYPE linconstype, SCIP_CONS andconss, SCIP_Real andcoefs, int nandconss, SCIP_VAR indvar, SCIP_Real weight, SCIP_Bool issoftcons, SCIP_VAR intvar, 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)

SCIP_RETCODE	SCIPcreateConsPseudoboolean (SCIP scip, SCIP_CONS cons, const char name, SCIP_VAR *linvars, int nlinvars, SCIP_Real linvals, SCIP_VAR **terms, int nterms, int ntermvars, SCIP_Real termvals, SCIP_VAR indvar, SCIP_Real weight, SCIP_Bool issoftcons, SCIP_VAR *intvar, 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)

SCIP_RETCODE	SCIPcreateConsBasicPseudoboolean (SCIP scip, SCIP_CONS cons, const char name, SCIP_VAR *linvars, int nlinvars, SCIP_Real linvals, SCIP_VAR **terms, int nterms, int ntermvars, SCIP_Real termvals, SCIP_VAR indvar, SCIP_Real weight, SCIP_Bool issoftcons, SCIP_VAR *intvar, SCIP_Real lhs, SCIP_Real rhs)

SCIP_RETCODE	SCIPaddCoefPseudoboolean (SCIP const scip, SCIP_CONS const cons, SCIP_VAR *const var, SCIP_Real const val)

SCIP_RETCODE	SCIPaddTermPseudoboolean (SCIP const scip, SCIP_CONS const cons, SCIP_VAR **const vars, int const nvars, SCIP_Real const val)

SCIP_VAR *	SCIPgetIndVarPseudoboolean (SCIP const scip, SCIP_CONS const cons)

SCIP_CONS *	SCIPgetLinearConsPseudoboolean (SCIP const scip, SCIP_CONS const cons)

SCIP_LINEARCONSTYPE	SCIPgetLinearConsTypePseudoboolean (SCIP const scip, SCIP_CONS const cons)

int	SCIPgetNLinVarsWithoutAndPseudoboolean (SCIP const scip, SCIP_CONS const cons)

SCIP_RETCODE	SCIPgetLinDatasWithoutAndPseudoboolean (SCIP const scip, SCIP_CONS const cons, SCIP_VAR *const linvars, SCIP_Real const lincoefs, int *const nlinvars)

SCIP_RETCODE	SCIPgetAndDatasPseudoboolean (SCIP const scip, SCIP_CONS const cons, SCIP_CONS *const andconss, SCIP_Real const andcoefs, int *const nandconss)

int	SCIPgetNAndsPseudoboolean (SCIP const scip, SCIP_CONS const cons)

SCIP_RETCODE	SCIPchgLhsPseudoboolean (SCIP const scip, SCIP_CONS const cons, SCIP_Real const lhs)

SCIP_RETCODE	SCIPchgRhsPseudoboolean (SCIP const scip, SCIP_CONS const cons, SCIP_Real const rhs)

SCIP_Real	SCIPgetLhsPseudoboolean (SCIP const scip, SCIP_CONS const cons)

SCIP_Real	SCIPgetRhsPseudoboolean (SCIP const scip, SCIP_CONS const cons)

Macro Definition Documentation

#define ARTIFICIALVARNAMEPREFIX "andresultant_"

Definition at line 42 of file cons_pseudoboolean.h.

Referenced by createAndAddAndCons(), SCIPcreateConsAnd(), setObjective(), and updateConsanddataUses().

Typedef Documentation

typedef enum SCIP_LinearConsType SCIP_LINEARCONSTYPE

Definition at line 58 of file cons_pseudoboolean.h.

Enumeration Type Documentation

enum SCIP_LinearConsType

solution status after solving LP

Enumerator:

SCIP_LINEARCONSTYPE_INVALIDCONS	this is no valid linear constraint type
SCIP_LINEARCONSTYPE_LINEAR	this is the common linear constraint
SCIP_LINEARCONSTYPE_LOGICOR	this is a logicor constraint
SCIP_LINEARCONSTYPE_KNAPSACK	this is a knapsack constraint
SCIP_LINEARCONSTYPE_SETPPC	this is a setppc constraint

Definition at line 45 of file cons_pseudoboolean.h.

Function Documentation

SCIP_RETCODE SCIPincludeConshdlrPseudoboolean ( SCIP * scip )

creates the handler for pseudoboolean constraints and includes it in SCIP

Parameters

scip	SCIP data structure

Definition at line 8508 of file cons_pseudoboolean.c.

References CONSHDLR_CHECKPRIORITY, CONSHDLR_DELAYPRESOL, CONSHDLR_DESC, CONSHDLR_EAGERFREQ, CONSHDLR_ENFOPRIORITY, CONSHDLR_MAXPREROUNDS, CONSHDLR_NAME, CONSHDLR_NEEDSCONS, conshdlrdataCreate(), DEFAULT_DECOMPOSEINDICATORPBCONS, DEFAULT_DECOMPOSENORMALPBCONS, DEFAULT_PROPAGATENONLINEAR, DEFAULT_REMOVABLENONLINEAR, DEFAULT_SEPARATENONLINEAR, NULL, SCIP_CALL, SCIP_OKAY, SCIPaddBoolParam(), SCIPincludeConshdlrBasic(), SCIPsetConshdlrCopy(), SCIPsetConshdlrDelete(), SCIPsetConshdlrFree(), SCIPsetConshdlrGetNVars(), SCIPsetConshdlrGetVars(), SCIPsetConshdlrInit(), SCIPsetConshdlrInitpre(), SCIPsetConshdlrPresol(), SCIPsetConshdlrPrint(), SCIPsetConshdlrTrans(), and TRUE.

Referenced by SCIP_DECL_CONSHDLRCOPY(), and SCIPincludeDefaultPlugins().

SCIP_RETCODE SCIPcreateConsPseudobooleanWithConss	(	SCIP *	scip,
		SCIP_CONS **	cons,
		const char *	name,
		SCIP_CONS *	lincons,
		SCIP_LINEARCONSTYPE	linconstype,
		SCIP_CONS **	andconss,
		SCIP_Real *	andcoefs,
		int	nandconss,
		SCIP_VAR *	indvar,
		SCIP_Real	weight,
		SCIP_Bool	issoftcons,
		SCIP_VAR *	intvar,
		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
	)

creates and captures a pseudoboolean constraint, with given linear and and-constraints

Parameters

scip	SCIP data structure
cons	pointer to hold the created constraint
name	name of constraint
lincons	associated linear constraint
linconstype	linear constraint type of associated linear constraint
andconss	associated and-constraints
andcoefs	associated coefficients of and-constraints
nandconss	number of associated and-constraints
indvar	indicator variable if it's a soft constraint, or NULL
weight	weight of the soft constraint, if it is one
issoftcons	is this a soft constraint
intvar	a artificial variable which was added only for the objective function, if this variable is not NULL this constraint (without this integer variable) describes the objective funktion
lhs	left hand side of constraint
rhs	right hand side of constraint
initial	should the LP relaxation of constraint be in the initial LP? Usually set to TRUE. Set to FALSE for 'lazy constraints'.
separate	should the constraint be separated during LP processing? Usually set to TRUE.
enforce	should the constraint be enforced during node processing? TRUE for model constraints, FALSE for additional, redundant constraints.
check	should the constraint be checked for feasibility? TRUE for model constraints, FALSE for additional, redundant constraints.
propagate	should the constraint be propagated during node processing? Usually set to TRUE.
local	is constraint only valid locally? Usually set to FALSE. Has to be set to TRUE, e.g., for branching constraints.
modifiable	is constraint modifiable (subject to column generation)? Usually set to FALSE. In column generation applications, set to TRUE if pricing adds coefficients to this constraint.
dynamic	is constraint subject to aging? Usually set to FALSE. Set to TRUE for own cuts which are seperated as constraints.
removable	should the relaxation be removed from the LP due to aging or cleanup? Usually set to FALSE. Set to TRUE for 'lazy constraints' and 'user cuts'.
stickingatnode	should the constraint always be kept at the node where it was added, even if it may be moved to a more global node? Usually set to FALSE. Set to TRUE to for constraints that represent node data.

Definition at line 8562 of file cons_pseudoboolean.c.

References BMScopyMemoryArray, ConsAndData::cons, consdataCreate(), CONSHDLR_NAME, FALSE, inithashmapandtable(), ConsAndData::isoriginal, ConsAndData::istransformed, ConsAndData::newvars, ConsAndData::nnewvars, ConsAndData::noriguses, NULL, ConsAndData::nuses, ConsAndData::nvars, ConsAndData::origcons, SCIP_Bool, SCIP_CALL, SCIP_LINEARCONSTYPE_INVALIDCONS, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPallocBlockMemory, SCIPcalcMemGrowSize(), SCIPcaptureCons(), SCIPcaptureVar(), SCIPconsAddUpgradeLocks(), SCIPconshdlrGetData(), SCIPconsIsTransformed(), SCIPcreateCons(), SCIPduplicateBlockMemoryArray, SCIPensureBlockMemoryArray, SCIPerrorMessage, SCIPfindConshdlr(), SCIPfreeBlockMemory, SCIPfreeBlockMemoryArray, SCIPgetNVarsAnd(), SCIPgetResultantAnd(), SCIPgetVarsAnd(), SCIPhashmapExists(), SCIPhashmapInsert(), SCIPhashtableInsert(), SCIPhashtableRetrieve(), SCIPinfinity(), SCIPisInfinity(), SCIPsortPtr(), SCIPwarningMessage(), ConsAndData::snewvars, ConsAndData::svars, TRUE, and ConsAndData::vars.

Referenced by copyConsPseudoboolean().

SCIP_RETCODE SCIPcreateConsPseudoboolean	(	SCIP *	scip,
		SCIP_CONS **	cons,
		const char *	name,
		SCIP_VAR **	linvars,
		int	nlinvars,
		SCIP_Real *	linvals,
		SCIP_VAR ***	terms,
		int	nterms,
		int *	ntermvars,
		SCIP_Real *	termvals,
		SCIP_VAR *	indvar,
		SCIP_Real	weight,
		SCIP_Bool	issoftcons,
		SCIP_VAR *	intvar,
		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
	)

creates and captures a pseudoboolean constraint

Note: linear and nonlinear terms can be added using SCIPaddCoefPseudoboolean() and SCIPaddTermPseudoboolean(), respectively; the constraint gets captured, hence at one point you have to release it using the method SCIPreleaseCons()

Parameters

scip	SCIP data structure
cons	pointer to hold the created constraint
name	name of constraint
linvars	variables of the linear part, or NULL
nlinvars	number of variables of the linear part
linvals	coefficients of linear part, or NULL
terms	nonlinear terms of variables, or NULL
nterms	number of terms of variables of nonlinear term
ntermvars	number of variables in nonlinear terms, or NULL
termvals	coefficients of nonlinear parts, or NULL
indvar	indicator variable if it's a soft constraint, or NULL
weight	weight of the soft constraint, if it is one
issoftcons	is this a soft constraint
intvar	a artificial variable which was added only for the objective function, if this variable is not NULL this constraint (without this integer variable) describes the objective function
lhs	left hand side of constraint
rhs	right hand side of constraint
initial	should the LP relaxation of constraint be in the initial LP? Usually set to TRUE. Set to FALSE for 'lazy constraints'.
separate	should the constraint be separated during LP processing? Usually set to TRUE.
enforce	should the constraint be enforced during node processing? TRUE for model constraints, FALSE for additional, redundant constraints.
check	should the constraint be checked for feasibility? TRUE for model constraints, FALSE for additional, redundant constraints.
propagate	should the constraint be propagated during node processing? Usually set to TRUE.
local	is constraint only valid locally? Usually set to FALSE. Has to be set to TRUE, e.g., for branching constraints.
modifiable	is constraint modifiable (subject to column generation)? Usually set to FALSE. In column generation applications, set to TRUE if pricing adds coefficients to this constraint.
dynamic	is constraint subject to aging? Usually set to FALSE. Set to TRUE for own cuts which are separated as constraints.
removable	should the relaxation be removed from the LP due to aging or cleanup? Usually set to FALSE. Set to TRUE for 'lazy constraints' and 'user cuts'.
stickingatnode	should the constraint always be kept at the node where it was added, even if it may be moved to a more global node? Usually set to FALSE. Set to TRUE to for constraints that represent node data.

Definition at line 8827 of file cons_pseudoboolean.c.

References consdataCreate(), CONSHDLR_NAME, createAndAddAnds(), createAndAddLinearCons(), FALSE, inithashmapandtable(), NULL, SCIP_CALL, SCIP_INVALIDDATA, SCIP_LINEARCONSTYPE_INVALIDCONS, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_Real, SCIPallocBufferArray, SCIPconshdlrGetData(), SCIPcreateCons(), SCIPerrorMessage, SCIPfindConshdlr(), SCIPfreeBufferArray, SCIPgetResultantAnd(), SCIPinfinity(), and SCIPisInfinity().

Referenced by readConstraints(), SCIPcreateConsBasicPseudoboolean(), and setObjective().

SCIP_RETCODE SCIPcreateConsBasicPseudoboolean	(	SCIP *	scip,
		SCIP_CONS **	cons,
		const char *	name,
		SCIP_VAR **	linvars,
		int	nlinvars,
		SCIP_Real *	linvals,
		SCIP_VAR ***	terms,
		int	nterms,
		int *	ntermvars,
		SCIP_Real *	termvals,
		SCIP_VAR *	indvar,
		SCIP_Real	weight,
		SCIP_Bool	issoftcons,
		SCIP_VAR *	intvar,
		SCIP_Real	lhs,
		SCIP_Real	rhs
	)

creates and captures a pseudoboolean constraint in its most basic variant, i. e., with all constraint flags set to their default values, which can be set afterwards using SCIPsetConsFLAGNAME() in scip.h

See Also: SCIPcreateConsPseudoboolean() for the default constraint flag configuration

Note: the constraint gets captured, hence at one point you have to release it using the method SCIPreleaseCons()

creates and captures a pseudoboolean constraint in its most basic variant, i. e., with all constraint flags set to their default values

Note: the constraint gets captured, hence at one point you have to release it using the method SCIPreleaseCons()

Parameters

scip	SCIP data structure
cons	pointer to hold the created constraint
name	name of constraint
linvars	variables of the linear part, or NULL
nlinvars	number of variables of the linear part
linvals	coefficients of linear part, or NULL
terms	nonlinear terms of variables, or NULL
nterms	number of terms of variables of nonlinear term
ntermvars	number of variables in nonlinear terms, or NULL
termvals	coefficients of nonlinear parts, or NULL
indvar	indicator variable if it's a soft constraint, or NULL
weight	weight of the soft constraint, if it is one
issoftcons	is this a soft constraint
intvar	a artificial variable which was added only for the objective function, if this variable is not NULL this constraint (without this integer variable) describes the objective function
lhs	left hand side of constraint
rhs	right hand side of constraint

Definition at line 8971 of file cons_pseudoboolean.c.

References FALSE, SCIP_CALL, SCIP_OKAY, SCIPcreateConsPseudoboolean(), and TRUE.

SCIP_RETCODE SCIPaddCoefPseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons,
		SCIP_VAR *const	var,
		SCIP_Real const	val
	)

adds linear term pseudo boolean constraint (if it is not zero)

Note: you can only add a coefficient if the special type of linear constraint won't changed

adds a variable to the pseudo boolean constraint (if it is not zero)

Note: you can only add a coefficient if the special type of linear constraint won't changed

Parameters

scip	SCIP data structure
cons	constraint data
var	variable of constraint entry
val	coefficient of constraint entry

Definition at line 9006 of file cons_pseudoboolean.c.

References CONSHDLR_NAME, FALSE, NULL, SCIP_CALL, SCIP_INVALIDDATA, SCIP_LINEARCONSTYPE_INVALIDCONS, SCIP_LINEARCONSTYPE_KNAPSACK, SCIP_LINEARCONSTYPE_LINEAR, SCIP_LINEARCONSTYPE_LOGICOR, SCIP_LINEARCONSTYPE_SETPPC, SCIP_Longint, SCIP_OKAY, SCIPABORT, SCIPaddCoefKnapsack(), SCIPaddCoefLinear(), SCIPaddCoefLogicor(), SCIPaddCoefSetppc(), SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPerrorMessage, SCIPisEQ(), SCIPisIntegral(), SCIPisPositive(), and SCIPisZero().

SCIP_RETCODE SCIPaddTermPseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons,
		SCIP_VAR **const	vars,
		int const	nvars,
		SCIP_Real const	val
	)

adds nonlinear term to pseudo boolean constraint (if it is not zero)

Note: you can only add a coefficient if the special type of linear constraint won't changed

adds nonlinear term to pseudo boolean constraint (if it is not zero)

Note: you can only add a coefficient if the special type of linear constraint won't changed

Parameters

scip	SCIP data structure
cons	pseudoboolean constraint
vars	variables of the nonlinear term
nvars	number of variables of the nonlinear term
val	coefficient of constraint entry

Definition at line 9083 of file cons_pseudoboolean.c.

References addCoefTerm(), CONSHDLR_NAME, NULL, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIPABORT, SCIPconsGetHdlr(), SCIPconshdlrGetName(), and SCIPerrorMessage.

SCIP_VAR* SCIPgetIndVarPseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons
	)

gets indicator variable of pseudoboolean constraint, or NULL if there is no

Parameters

scip	SCIP data structure
cons	constraint data

Definition at line 9108 of file cons_pseudoboolean.c.

References CONSHDLR_NAME, NULL, SCIPABORT, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), and SCIPerrorMessage.

Referenced by writeOpbConstraints().

SCIP_CONS* SCIPgetLinearConsPseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons
	)

gets linear constraint of pseudoboolean constraint

Parameters

scip	SCIP data structure
cons	constraint data

Definition at line 9132 of file cons_pseudoboolean.c.

References CONSHDLR_NAME, NULL, SCIPABORT, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), and SCIPerrorMessage.

Referenced by writeOpbConstraints().

SCIP_LINEARCONSTYPE SCIPgetLinearConsTypePseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons
	)

gets type of linear constraint of pseudoboolean constraint

Parameters

scip	SCIP data structure
cons	constraint data

Definition at line 9156 of file cons_pseudoboolean.c.

References CONSHDLR_NAME, NULL, SCIP_LINEARCONSTYPE_INVALIDCONS, SCIPABORT, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), and SCIPerrorMessage.

int SCIPgetNLinVarsWithoutAndPseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons
	)

gets number of linear variables without artificial terms variables of pseudoboolean constraint

Parameters

scip	SCIP data structure
cons	pseudoboolean constraint

Definition at line 9180 of file cons_pseudoboolean.c.

References CONSHDLR_NAME, NULL, SCIP_OKAY, SCIPABORT, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), and SCIPerrorMessage.

Referenced by writeOpbConstraints().

SCIP_RETCODE SCIPgetLinDatasWithoutAndPseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons,
		SCIP_VAR **const	linvars,
		SCIP_Real *const	lincoefs,
		int *const	nlinvars
	)

gets linear constraint of pseudoboolean constraint

Parameters

scip	SCIP data structure
cons	pseudoboolean constraint
linvars	array to store and-constraints
lincoefs	array to store and-coefficients
nlinvars	pointer to store the required array size for and-constraints, have to be initialized with size of given array

Definition at line 9213 of file cons_pseudoboolean.c.

References CONSHDLR_NAME, getLinearConsNVars(), getLinearConsVarsData(), getLinVarsAndAndRess(), NULL, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_Real, SCIPABORT, SCIPallocBufferArray, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPerrorMessage, and SCIPfreeBufferArray.

Referenced by writeOpbConstraints().

SCIP_RETCODE SCIPgetAndDatasPseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons,
		SCIP_CONS **const	andconss,
		SCIP_Real *const	andcoefs,
		int *const	nandconss
	)

gets and-constraints of pseudoboolean constraint

Parameters

scip	SCIP data structure
cons	pseudoboolean constraint
andconss	array to store and-constraints
andcoefs	array to store and-coefficients
nandconss	pointer to store the required array size for and-constraints, have to be initialized with size of given array

Definition at line 9275 of file cons_pseudoboolean.c.

References CONSHDLR_NAME, NULL, SCIP_Bool, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIPABORT, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPconsIsOriginal(), SCIPerrorMessage, and TRUE.

Referenced by writeOpbConstraints().

int SCIPgetNAndsPseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons
	)

gets number of and constraints of pseudoboolean constraint

Parameters

scip	SCIP data structure
cons	constraint data

Definition at line 9337 of file cons_pseudoboolean.c.

References CONSHDLR_NAME, NULL, SCIP_OKAY, SCIPABORT, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), and SCIPerrorMessage.

Referenced by writeOpbConstraints().

SCIP_RETCODE SCIPchgLhsPseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons,
		SCIP_Real const	lhs
	)

changes left hand side of pseudoboolean constraint

Note: you can only change the left hand side if the special type of linear constraint won't changed

changes left hand side of pseudoboolean constraint

Note: you can only change the left hand side if the special type of linear constraint won't changed

Parameters

scip	SCIP data structure
cons	constraint data
lhs	new left hand side

Definition at line 9376 of file cons_pseudoboolean.c.

References chgLhs(), CONSHDLR_NAME, NULL, SCIP_CALL, SCIP_INVALIDDATA, SCIP_LINEARCONSTYPE_INVALIDCONS, SCIP_LINEARCONSTYPE_KNAPSACK, SCIP_LINEARCONSTYPE_LINEAR, SCIP_LINEARCONSTYPE_LOGICOR, SCIP_LINEARCONSTYPE_SETPPC, SCIP_OKAY, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), and SCIPerrorMessage.

SCIP_RETCODE SCIPchgRhsPseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons,
		SCIP_Real const	rhs
	)

changes right hand side of pseudoboolean constraint

Note: you can only change the right hand side if the special type of linear constraint won't changed

changes right hand side of pseudoboolean constraint

Note: you can only change the right hand side if the special type of linear constraint won't changed

Parameters

scip	SCIP data structure
cons	constraint data
rhs	new right hand side

Definition at line 9429 of file cons_pseudoboolean.c.

References chgRhs(), CONSHDLR_NAME, NULL, SCIP_CALL, SCIP_INVALIDDATA, SCIP_LINEARCONSTYPE_INVALIDCONS, SCIP_LINEARCONSTYPE_KNAPSACK, SCIP_LINEARCONSTYPE_LINEAR, SCIP_LINEARCONSTYPE_LOGICOR, SCIP_LINEARCONSTYPE_SETPPC, SCIP_OKAY, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), and SCIPerrorMessage.

SCIP_Real SCIPgetLhsPseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons
	)

get left hand side of pseudoboolean constraint

Parameters

scip	SCIP data structure
cons	pseudoboolean constraint

Definition at line 9473 of file cons_pseudoboolean.c.

References CONSHDLR_NAME, NULL, SCIP_INVALID, SCIP_OKAY, SCIPABORT, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), and SCIPerrorMessage.

Referenced by writeOpbConstraints().

SCIP_Real SCIPgetRhsPseudoboolean	(	SCIP *const	scip,
		SCIP_CONS *const	cons
	)

get right hand side of pseudoboolean constraint

Parameters

scip	SCIP data structure
cons	pseudoboolean constraint

Definition at line 9503 of file cons_pseudoboolean.c.

References CONSHDLR_NAME, NULL, SCIP_INVALID, SCIP_OKAY, SCIPABORT, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), and SCIPerrorMessage.

Referenced by writeOpbConstraints().

SCIP

Detailed Description

Macros

Typedefs

Enumerations

Functions

Macro Definition Documentation

Typedef Documentation

Enumeration Type Documentation

Function Documentation