SCIP
Solving Constraint Integer Programs
presol.c File Reference
Detailed Description
methods for presolvers
Definition in file presol.c.
#include <assert.h>#include <string.h>#include "scip/def.h"#include "blockmemshell/memory.h"#include "scip/set.h"#include "scip/clock.h"#include "scip/paramset.h"#include "scip/scip.h"#include "scip/pub_misc.h"#include "scip/presol.h"#include "scip/struct_presol.h"Go to the source code of this file.
Function Documentation
◆ SCIP_DECL_PARAMCHGD()
|
static |
method to call, when the priority of a presolver was changed
Definition at line 61 of file presol.c.
References NULL, SCIP_CALL, SCIP_OKAY, SCIPparamGetData(), SCIPparamGetInt(), and SCIPsetPresolPriority().
◆ SCIPpresolCopyInclude()
| SCIP_RETCODE SCIPpresolCopyInclude | ( | SCIP_PRESOL * | presol, |
| SCIP_SET * | set | ||
| ) |
copies the given presolver to a new scip
- Parameters
-
presol presolver set SCIP_SET of SCIP to copy to
Definition at line 75 of file presol.c.
References NULL, SCIP_CALL, SCIP_OKAY, SCIPpresolGetName(), and SCIPsetDebugMsg.
Referenced by SCIPsetCopyPlugins().
◆ doPresolCreate()
|
static |
internal method for creating a presolver
- Parameters
-
presol pointer to store presolver set global SCIP settings messagehdlr message handler blkmem block memory for parameter settings name name of presolver desc description of presolver priority priority of the presolver (>= 0: before, < 0: after constraint handlers) maxrounds maximal number of presolving rounds the presolver participates in (-1: no limit) timing timing mask of the presolver presoldata presolver data
Definition at line 94 of file presol.c.
References BMSallocMemory, BMSclearMemory, BMSduplicateMemoryArray, FALSE, NULL, paramname, SCIP_ALLOC, SCIP_CALL, SCIP_CLOCKTYPE_DEFAULT, SCIP_MAXSTRLEN, SCIP_OKAY, SCIP_PARAMETERWRONGVAL, SCIP_PRESOLTIMING_EXHAUSTIVE, SCIP_PRESOLTIMING_FAST, SCIP_PRESOLTIMING_FINAL, SCIP_PRESOLTIMING_MAX, SCIP_PRESOLTIMING_MEDIUM, SCIPclockCreate(), SCIPmessagePrintError(), SCIPsetAddIntParam(), SCIPsnprintf(), and TRUE.
Referenced by SCIPpresolCreate().
◆ SCIPpresolCreate()
| SCIP_RETCODE SCIPpresolCreate | ( | SCIP_PRESOL ** | presol, |
| SCIP_SET * | set, | ||
| SCIP_MESSAGEHDLR * | messagehdlr, | ||
| BMS_BLKMEM * | blkmem, | ||
| const char * | name, | ||
| const char * | desc, | ||
| int | priority, | ||
| int | maxrounds, | ||
| SCIP_PRESOLTIMING | timing, | ||
| SCIP_DECL_PRESOLCOPY((*presolcopy)) | , | ||
| SCIP_DECL_PRESOLFREE((*presolfree)) | , | ||
| SCIP_DECL_PRESOLINIT((*presolinit)) | , | ||
| SCIP_DECL_PRESOLEXIT((*presolexit)) | , | ||
| SCIP_DECL_PRESOLINITPRE((*presolinitpre)) | , | ||
| SCIP_DECL_PRESOLEXITPRE((*presolexitpre)) | , | ||
| SCIP_DECL_PRESOLEXEC((*presolexec)) | , | ||
| SCIP_PRESOLDATA * | presoldata | ||
| ) |
creates a presolver
- Parameters
-
presol pointer to store presolver set global SCIP settings messagehdlr message handler blkmem block memory for parameter settings name name of presolver desc description of presolver priority priority of the presolver (>= 0: before, < 0: after constraint handlers) maxrounds maximal number of presolving rounds the presolver participates in (-1: no limit) timing timing mask of the presolver presoldata presolver data
Definition at line 171 of file presol.c.
References doPresolCreate(), NULL, SCIP_CALL_FINALLY, SCIP_OKAY, and SCIPpresolFree().
Referenced by SCIPincludePresol(), and SCIPincludePresolBasic().
◆ SCIPpresolFree()
| SCIP_RETCODE SCIPpresolFree | ( | SCIP_PRESOL ** | presol, |
| SCIP_SET * | set | ||
| ) |
frees memory of presolver
- Parameters
-
presol pointer to presolver data structure set global SCIP settings
Definition at line 203 of file presol.c.
References BMSfreeMemory, BMSfreeMemoryArrayNull, NULL, SCIP_CALL, SCIP_OKAY, and SCIPclockFree().
Referenced by SCIPpresolCreate().
◆ SCIPpresolInit()
| SCIP_RETCODE SCIPpresolInit | ( | SCIP_PRESOL * | presol, |
| SCIP_SET * | set | ||
| ) |
initializes presolver
- Parameters
-
presol presolver set global SCIP settings
Definition at line 230 of file presol.c.
References SCIP_Presol::initialized, SCIP_Presol::lastnaddconss, SCIP_Presol::lastnaddholes, SCIP_Presol::lastnaggrvars, SCIP_Presol::lastnchgbds, SCIP_Presol::lastnchgcoefs, SCIP_Presol::lastnchgsides, SCIP_Presol::lastnchgvartypes, SCIP_Presol::lastndelconss, SCIP_Presol::lastnfixedvars, SCIP_Presol::lastnupgdconss, SCIP_Presol::naddconss, SCIP_Presol::naddholes, SCIP_Presol::naggrvars, SCIP_Presol::name, SCIP_Presol::ncalls, SCIP_Presol::nchgbds, SCIP_Presol::nchgcoefs, SCIP_Presol::nchgsides, SCIP_Presol::nchgvartypes, SCIP_Presol::ndelconss, SCIP_Presol::nfixedvars, NULL, SCIP_Presol::nupgdconss, SCIP_Presol::presolclock, SCIP_CALL, SCIP_INVALIDCALL, SCIP_OKAY, SCIPclockReset(), SCIPclockStart(), SCIPclockStop(), SCIPerrorMessage, SCIP_Presol::setuptime, and TRUE.
Referenced by SCIPsetSetPriorityNlpi().
◆ SCIPpresolExit()
| SCIP_RETCODE SCIPpresolExit | ( | SCIP_PRESOL * | presol, |
| SCIP_SET * | set | ||
| ) |
deinitializes presolver
- Parameters
-
presol presolver set global SCIP settings
Definition at line 289 of file presol.c.
References FALSE, SCIP_Presol::initialized, SCIP_Presol::name, NULL, SCIP_CALL, SCIP_INVALIDCALL, SCIP_OKAY, SCIPclockStart(), SCIPclockStop(), SCIPerrorMessage, and SCIP_Presol::setuptime.
Referenced by SCIPsetInitPlugins().
◆ SCIPpresolInitpre()
| SCIP_RETCODE SCIPpresolInitpre | ( | SCIP_PRESOL * | presol, |
| SCIP_SET * | set | ||
| ) |
informs presolver that the presolving process is being started
- Parameters
-
presol presolver set global SCIP settings
Definition at line 320 of file presol.c.
References SCIP_Presol::lastnaddconss, SCIP_Presol::lastnaddholes, SCIP_Presol::lastnaggrvars, SCIP_Presol::lastnchgbds, SCIP_Presol::lastnchgcoefs, SCIP_Presol::lastnchgsides, SCIP_Presol::lastnchgvartypes, SCIP_Presol::lastndelconss, SCIP_Presol::lastnfixedvars, SCIP_Presol::lastnupgdconss, NULL, SCIP_CALL, SCIP_OKAY, SCIPclockStart(), SCIPclockStop(), and SCIP_Presol::setuptime.
Referenced by SCIPsetExitPlugins().
◆ SCIPpresolExitpre()
| SCIP_RETCODE SCIPpresolExitpre | ( | SCIP_PRESOL * | presol, |
| SCIP_SET * | set | ||
| ) |
informs presolver that the presolving process is finished
- Parameters
-
presol presolver set global SCIP settings
Definition at line 355 of file presol.c.
References NULL, SCIP_CALL, SCIP_OKAY, SCIPclockStart(), SCIPclockStop(), and SCIP_Presol::setuptime.
Referenced by SCIPsetExitPlugins().
◆ SCIPpresolExec()
| SCIP_RETCODE SCIPpresolExec | ( | SCIP_PRESOL * | presol, |
| SCIP_SET * | set, | ||
| SCIP_PRESOLTIMING | timing, | ||
| int | nrounds, | ||
| int * | nfixedvars, | ||
| int * | naggrvars, | ||
| int * | nchgvartypes, | ||
| int * | nchgbds, | ||
| int * | naddholes, | ||
| int * | ndelconss, | ||
| int * | naddconss, | ||
| int * | nupgdconss, | ||
| int * | nchgcoefs, | ||
| int * | nchgsides, | ||
| SCIP_RESULT * | result | ||
| ) |
executes presolver
- Parameters
-
presol presolver set global SCIP settings timing current presolving timing nrounds number of presolving rounds already done nfixedvars pointer to total number of variables fixed of all presolvers naggrvars pointer to total number of variables aggregated of all presolvers nchgvartypes pointer to total number of variable type changes of all presolvers nchgbds pointer to total number of variable bounds tightened of all presolvers naddholes pointer to total number of domain holes added of all presolvers ndelconss pointer to total number of deleted constraints of all presolvers naddconss pointer to total number of added constraints of all presolvers nupgdconss pointer to total number of upgraded constraints of all presolvers nchgcoefs pointer to total number of changed coefficients of all presolvers nchgsides pointer to total number of changed left/right hand sides of all presolvers result pointer to store the result of the callback method
Definition at line 379 of file presol.c.
References SCIP_Presol::lastnaddconss, SCIP_Presol::lastnaddholes, SCIP_Presol::lastnaggrvars, SCIP_Presol::lastnchgbds, SCIP_Presol::lastnchgcoefs, SCIP_Presol::lastnchgsides, SCIP_Presol::lastnchgvartypes, SCIP_Presol::lastndelconss, SCIP_Presol::lastnfixedvars, SCIP_Presol::lastnupgdconss, SCIP_Presol::maxrounds, SCIP_Presol::naddconss, SCIP_Presol::naddholes, SCIP_Presol::naggrvars, SCIP_Presol::name, SCIP_Presol::ncalls, SCIP_Presol::nchgbds, SCIP_Presol::nchgcoefs, SCIP_Presol::nchgsides, SCIP_Presol::nchgvartypes, SCIP_Presol::ndelconss, SCIP_Presol::nfixedvars, NULL, SCIP_Presol::nupgdconss, SCIP_Presol::presolclock, SCIP_CALL, SCIP_CUTOFF, SCIP_DIDNOTFIND, SCIP_DIDNOTRUN, SCIP_INVALIDRESULT, SCIP_OKAY, SCIP_SUCCESS, SCIP_UNBOUNDED, SCIPclockStart(), SCIPclockStop(), SCIPerrorMessage, SCIPsetDebugMsg, and SCIP_Presol::timing.
Referenced by presolveRound().
◆ SCIPpresolSetCopy()
| void SCIPpresolSetCopy | ( | SCIP_PRESOL * | presol, |
| SCIP_DECL_PRESOLCOPY((*presolcopy)) | |||
| ) |
sets copy method of presolver
- Parameters
-
presol presolver
Definition at line 524 of file presol.c.
References NULL.
Referenced by SCIPsetPresolCopy().
◆ SCIPpresolSetFree()
| void SCIPpresolSetFree | ( | SCIP_PRESOL * | presol, |
| SCIP_DECL_PRESOLFREE((*presolfree)) | |||
| ) |
sets destructor method of presolver
- Parameters
-
presol presolver
Definition at line 535 of file presol.c.
References NULL.
Referenced by SCIPsetPresolFree().
◆ SCIPpresolSetInit()
| void SCIPpresolSetInit | ( | SCIP_PRESOL * | presol, |
| SCIP_DECL_PRESOLINIT((*presolinit)) | |||
| ) |
sets initialization method of presolver
- Parameters
-
presol presolver
Definition at line 546 of file presol.c.
References NULL.
Referenced by SCIPsetPresolInit().
◆ SCIPpresolSetExit()
| void SCIPpresolSetExit | ( | SCIP_PRESOL * | presol, |
| SCIP_DECL_PRESOLEXIT((*presolexit)) | |||
| ) |
sets deinitialization method of presolver
- Parameters
-
presol presolver
Definition at line 557 of file presol.c.
References NULL.
Referenced by SCIPsetPresolExit().
◆ SCIPpresolSetInitpre()
| void SCIPpresolSetInitpre | ( | SCIP_PRESOL * | presol, |
| SCIP_DECL_PRESOLINITPRE((*presolinitpre)) | |||
| ) |
sets solving process initialization method of presolver
- Parameters
-
presol presolver
Definition at line 568 of file presol.c.
References NULL.
Referenced by SCIPsetPresolInitpre().
◆ SCIPpresolSetExitpre()
| void SCIPpresolSetExitpre | ( | SCIP_PRESOL * | presol, |
| SCIP_DECL_PRESOLEXITPRE((*presolexitpre)) | |||
| ) |
sets solving process deinitialization method of presolver
- Parameters
-
presol presolver
Definition at line 579 of file presol.c.
References NULL.
Referenced by SCIPsetPresolExitpre().
◆ SCIPpresolSetPriority()
| void SCIPpresolSetPriority | ( | SCIP_PRESOL * | presol, |
| SCIP_SET * | set, | ||
| int | priority | ||
| ) |
sets priority of presolver
- Parameters
-
presol presolver set global SCIP settings priority new priority of the presolver
Definition at line 630 of file presol.c.
References FALSE, NULL, and SCIP_Presol::priority.
Referenced by SCIPsetPresolPriority().
◆ SCIPpresolEnableOrDisableClocks()
| void SCIPpresolEnableOrDisableClocks | ( | SCIP_PRESOL * | presol, |
| SCIP_Bool | enable | ||
| ) |
enables or disables all clocks of presol, depending on the value of the flag
- Parameters
-
presol the presolver for which all clocks should be enabled or disabled enable should the clocks of the presolver be enabled?
Definition at line 676 of file presol.c.
References NULL, SCIP_Presol::presolclock, SCIPclockEnableOrDisable(), and SCIP_Presol::setuptime.