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SCIP Doxygen Documentation: Propagators

methods for propagator plugins

compares two propagators w. r. to their priority

Definition at line 52 of file prop.c.

compares two propagators w. r. to their presolving priority

compares two propagators w. r. to their priority

Definition at line 58 of file prop.c.

comparison method for sorting propagators w.r.t. to their name

Definition at line 64 of file prop.c.

References SCIPpropGetName().

gets user data of propagator

Parameters

Definition at line 789 of file prop.c.

References NULL, and SCIP_Prop::propdata.

Referenced by applyGenVBounds(), initData(), propagateCutoffbound(), propagateCutoffboundBinvar(), propagateCutoffboundBinvars(), propagateCutoffboundGlobally(), propagateLowerbound(), propagateVbounds(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_PROPCOPY(), SCIP_DECL_PROPEXEC(), SCIP_DECL_PROPEXIT(), SCIP_DECL_PROPEXITPRE(), SCIP_DECL_PROPEXITSOL(), SCIP_DECL_PROPFREE(), SCIP_DECL_PROPINIT(), SCIP_DECL_PROPINITPRE(), SCIP_DECL_PROPINITSOL(), SCIP_DECL_PROPPRESOL(), SCIP_DECL_PROPRESPROP(), SCIPcreateSymOpNodeType(), SCIPfindObjProp(), SCIPgenVBoundAdd(), SCIPgetObjProp(), SCIPgetSymmetry(), SCIPgetSymmetryNGenerators(), SCIPgetSymOpNodeType(), SCIPisPropagatedVbounds(), SCIPpropSyncAddBndchg(), SCIPpropSyncGetNTightenedBnds(), SCIPpropSyncGetNTightenedIntBnds(), and tryAddSymmetryHandlingMethods().

gets name of propagator

Parameters

Definition at line 941 of file prop.c.

References SCIP_Prop::name, and NULL.

Referenced by conflictAddBound(), conflictResolveBound(), paramsetSetPresolvingDefault(), paramsetSetPresolvingOff(), presolveRound(), propagationRound(), SCIP_DECL_DIALOGEXEC(), SCIP_DECL_PROPCOPY(), SCIP_DECL_PROPEXEC(), SCIP_DECL_PROPEXIT(), SCIP_DECL_PROPEXITPRE(), SCIP_DECL_PROPEXITSOL(), SCIP_DECL_PROPFREE(), SCIP_DECL_PROPINIT(), SCIP_DECL_PROPINITPRE(), SCIP_DECL_PROPINITSOL(), SCIP_DECL_PROPPRESOL(), SCIP_DECL_SORTPTRCOMP(), SCIPboundchgApply(), SCIPcopyConcurrentSolvingStats(), SCIPgenVBoundAdd(), SCIPgetSymmetry(), SCIPnodeAddBoundinfer(), SCIPnodeAddHoleinfer(), SCIPprintPresolverStatistics(), SCIPprintPropagatorStatistics(), SCIPpropCopyInclude(), SCIPpropSyncAddBndchg(), SCIPsetPropPresol(), varAddLbchginfo(), and varAddUbchginfo().

sets the timing mask of the presolving method of the propagator

Parameters

prop propagator presoltiming timing mask to be set

Definition at line 1306 of file prop.c.

References NULL, and SCIP_Prop::presoltiming.

creates a propagator and includes it in SCIP.

Note

method has all propagator callbacks as arguments and is thus changed every time a new callback is added in future releases; consider using SCIPincludePropBasic() and setter functions if you seek for a method which is less likely to change in future releases

creates a propagator and includes it in SCIP.

Precondition

This method can be called if SCIP is in one of the following stages:

• SCIP_STAGE_INIT
• SCIP_STAGE_PROBLEM

Note

method has all propagator callbacks as arguments and is thus changed every time a new callback is added in future releases; consider using SCIPincludePropBasic() and setter functions if you seek for a method which is less likely to change in future releases

Parameters

scip SCIP data structure name name of propagator desc description of propagator priority priority of the propagator (>= 0: before, < 0: after constraint handlers) freq frequency for calling propagator delay should propagator be delayed, if other propagators found reductions? timingmask positions in the node solving loop where propagator should be executed presolpriority presolving priority of the propagator (>= 0: before, < 0: after constraint handlers) presolmaxrounds maximal number of presolving rounds the propagator participates in (-1: no limit) presoltiming timing mask of the propagator's presolving method propdata propagator data

Definition at line 66 of file scip_prop.c.

References FALSE, NULL, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIPcheckStage(), SCIPerrorMessage, SCIPfindProp(), SCIPpropCreate(), SCIPsetIncludeProp(), and TRUE.

Referenced by SCIPincludeObjProp().

creates a propagator and includes it in SCIP. All non-fundamental (or optional) callbacks will be set to NULL. Optional callbacks can be set via specific setter functions, see SCIPsetPropInit(), SCIPsetPropExit(), SCIPsetPropCopy(), SCIPsetPropFree(), SCIPsetPropInitsol(), SCIPsetPropExitsol(), SCIPsetPropInitpre(), SCIPsetPropExitpre(), SCIPsetPropPresol(), and SCIPsetPropResprop().

Precondition

This method can be called if SCIP is in one of the following stages:

• SCIP_STAGE_INIT
• SCIP_STAGE_PROBLEM

Note

if you want to set all callbacks with a single method call, consider using SCIPincludeProp() instead

creates a propagator and includes it in SCIP. All non-fundamental (or optional) callbacks will be set to NULL. Optional callbacks can be set via specific setter functions, see SCIPsetPropInit(), SCIPsetPropExit(), SCIPsetPropCopy(), SCIPsetPropFree(), SCIPsetPropInitsol(), SCIPsetPropExitsol(), SCIPsetPropInitpre(), SCIPsetPropExitpre(), SCIPsetPropPresol(), and SCIPsetPropResprop().

Note

if you want to set all callbacks with a single method call, consider using SCIPincludeProp() instead

Parameters

scip SCIP data structure propptr reference to a propagator pointer, or NULL name name of propagator desc description of propagator priority priority of the propagator (>= 0: before, < 0: after constraint handlers) freq frequency for calling propagator delay should propagator be delayed, if other propagators found reductions? timingmask positions in the node solving loop where propagators should be executed propdata propagator data

Definition at line 118 of file scip_prop.c.

References FALSE, NULL, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_PRESOLTIMING_ALWAYS, SCIPcheckStage(), SCIPerrorMessage, SCIPfindProp(), SCIPpropCreate(), SCIPsetIncludeProp(), and TRUE.

Referenced by SCIPincludePropDualfix(), SCIPincludePropGenvbounds(), SCIPincludePropNlobbt(), SCIPincludePropObbt(), SCIPincludePropProbing(), SCIPincludePropPseudoobj(), SCIPincludePropRedcost(), SCIPincludePropRootredcost(), SCIPincludePropSymmetry(), SCIPincludePropSync(), and SCIPincludePropVbounds().

sets copy method of propagator

Parameters

scip SCIP data structure prop propagator

Definition at line 155 of file scip_prop.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPcheckStage(), SCIPpropSetCopy(), and TRUE.

Referenced by SCIPincludePropDualfix(), SCIPincludePropGenvbounds(), SCIPincludePropNlobbt(), SCIPincludePropObbt(), SCIPincludePropProbing(), SCIPincludePropPseudoobj(), SCIPincludePropRedcost(), SCIPincludePropRootredcost(), and SCIPincludePropVbounds().

sets destructor method of propagator

Parameters

scip SCIP data structure prop propagator

Definition at line 171 of file scip_prop.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPcheckStage(), SCIPpropSetFree(), and TRUE.

Referenced by SCIPincludePropGenvbounds(), SCIPincludePropNlobbt(), SCIPincludePropObbt(), SCIPincludePropProbing(), SCIPincludePropPseudoobj(), SCIPincludePropRedcost(), SCIPincludePropRootredcost(), SCIPincludePropSymmetry(), SCIPincludePropSync(), and SCIPincludePropVbounds().

sets solving process initialization method of propagator

Parameters

scip SCIP data structure prop propagator

Definition at line 219 of file scip_prop.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPcheckStage(), SCIPpropSetInitsol(), and TRUE.

Referenced by SCIPincludePropNlobbt(), SCIPincludePropObbt(), SCIPincludePropProbing(), SCIPincludePropPseudoobj(), and SCIPincludePropRedcost().

sets solving process deinitialization method of propagator

Parameters

scip SCIP data structure prop propagator

Definition at line 235 of file scip_prop.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPcheckStage(), SCIPpropSetExitsol(), and TRUE.

Referenced by SCIPincludePropGenvbounds(), SCIPincludePropNlobbt(), SCIPincludePropObbt(), SCIPincludePropPseudoobj(), SCIPincludePropRootredcost(), SCIPincludePropSymmetry(), and SCIPincludePropVbounds().

sets presolving method of propagator

Parameters

scip SCIP data structure prop propagator presolpriority presolving priority of the propagator (>= 0: before, < 0: after constraint handlers) presolmaxrounds maximal number of presolving rounds the propagator participates in (-1: no limit) presoltiming timing mask of the propagator's presolving method

Definition at line 283 of file scip_prop.c.

References FALSE, NULL, paramname, SCIP_CALL, SCIP_MAXSTRLEN, SCIP_OKAY, SCIPcheckStage(), SCIPpropGetName(), SCIPpropSetPresol(), SCIPsetSetDefaultIntParam(), SCIPsnprintf(), and TRUE.

Referenced by SCIPincludePropDualfix(), SCIPincludePropGenvbounds(), SCIPincludePropProbing(), SCIPincludePropPseudoobj(), SCIPincludePropSymmetry(), SCIPincludePropSync(), and SCIPincludePropVbounds().

sets propagation conflict resolving callback of propagator

Parameters

scip SCIP data structure prop propagator

Definition at line 316 of file scip_prop.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPcheckStage(), SCIPpropSetResprop(), and TRUE.

Referenced by SCIPincludePropGenvbounds(), SCIPincludePropObbt(), SCIPincludePropProbing(), SCIPincludePropPseudoobj(), SCIPincludePropSymmetry(), and SCIPincludePropVbounds().

returns the propagator of the given name, or NULL if not existing

Parameters

scip SCIP data structure name name of propagator

Definition at line 333 of file scip_prop.c.

References NULL, and SCIPsetFindProp().

Referenced by SCIP_DECL_PROPINITSOL(), SCIPcopyConcurrentSolvingStats(), SCIPcreateConcurrent(), SCIPcreateSymOpNodeType(), SCIPenableDebugSol(), SCIPexecPropVbounds(), SCIPfindObjProp(), SCIPgetSymmetry(), SCIPgetSymmetryNGenerators(), SCIPgetSymOpNodeType(), SCIPincludeProp(), SCIPincludePropBasic(), and SCIPisPropagatedVbounds().

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