Scippy

SCIP

Solving Constraint Integer Programs

Macros | Functions
Hash Table
Public API of SCIP » Core API » Data Structures

Detailed Description

hash table that resolves conflicts by probing

Macros

#define SCIPhashSignature64(a)   (UINT64_C(0x8000000000000000)>>((UINT32_C(0x9e3779b9) * ((uint32_t)(a)))>>26))
 
#define SCIPhashTwo(a, b)   ((uint32_t)((((uint32_t)(a) + 0xd37e9a1ce2148403ULL) * ((uint32_t)(b) + 0xe5fcc163aef32782ULL) )>>32))
 
#define SCIPhashThree(a, b, c)
 
#define SCIPhashFour(a, b, c, d)
 
#define SCIPhashFive(a, b, c, d, e)
 
#define SCIPhashSix(a, b, c, d, e, f)
 
#define SCIPhashSeven(a, b, c, d, e, f, g)
 

Functions

static INLINE uint32_t SCIPrealHashCode (double x)
 
SCIP_EXPORT SCIP_RETCODE SCIPhashtableCreate (SCIP_HASHTABLE **hashtable, BMS_BLKMEM *blkmem, int tablesize, SCIP_DECL_HASHGETKEY((*hashgetkey)), SCIP_DECL_HASHKEYEQ((*hashkeyeq)), SCIP_DECL_HASHKEYVAL((*hashkeyval)), void *userptr)
 
SCIP_EXPORT void SCIPhashtableFree (SCIP_HASHTABLE **hashtable)
 
SCIP_EXPORT void SCIPhashtableClear (SCIP_HASHTABLE *hashtable)
 
SCIP_EXPORT SCIP_RETCODE SCIPhashtableInsert (SCIP_HASHTABLE *hashtable, void *element)
 
SCIP_EXPORT SCIP_RETCODE SCIPhashtableSafeInsert (SCIP_HASHTABLE *hashtable, void *element)
 
SCIP_EXPORT void * SCIPhashtableRetrieve (SCIP_HASHTABLE *hashtable, void *key)
 
SCIP_EXPORT SCIP_Bool SCIPhashtableExists (SCIP_HASHTABLE *hashtable, void *element)
 
SCIP_EXPORT SCIP_RETCODE SCIPhashtableRemove (SCIP_HASHTABLE *hashtable, void *element)
 
SCIP_EXPORT void SCIPhashtableRemoveAll (SCIP_HASHTABLE *hashtable)
 
SCIP_EXPORT SCIP_Longint SCIPhashtableGetNElements (SCIP_HASHTABLE *hashtable)
 
SCIP_EXPORT int SCIPhashtableGetNEntries (SCIP_HASHTABLE *hashtable)
 
SCIP_EXPORT void * SCIPhashtableGetEntry (SCIP_HASHTABLE *hashtable, int entryidx)
 
SCIP_EXPORT SCIP_Real SCIPhashtableGetLoad (SCIP_HASHTABLE *hashtable)
 
SCIP_EXPORT void SCIPhashtablePrintStatistics (SCIP_HASHTABLE *hashtable, SCIP_MESSAGEHDLR *messagehdlr)
 

Macro Definition Documentation

◆ SCIPhashSignature64

#define SCIPhashSignature64 (   a)    (UINT64_C(0x8000000000000000)>>((UINT32_C(0x9e3779b9) * ((uint32_t)(a)))>>26))

Definition at line 507 of file pub_misc.h.

Referenced by calcSignature(), consdataGetFeasibility(), and SCIP_DECL_HASHKEYVAL().

◆ SCIPhashTwo

#define SCIPhashTwo (   a,
  b 
)    ((uint32_t)((((uint32_t)(a) + 0xd37e9a1ce2148403ULL) * ((uint32_t)(b) + 0xe5fcc163aef32782ULL) )>>32))

Definition at line 509 of file pub_misc.h.

Referenced by hashIndexPair(), SCIP_DECL_HASHKEYVAL(), and SCIPrandomSetSeed().

◆ SCIPhashThree

#define SCIPhashThree (   a,
  b,
  c 
)
Value:
((uint32_t)((((uint32_t)(a) + 0xbd5c89185f082658ULL) * ((uint32_t)(b) + 0xe5fcc163aef32782ULL) + \
(uint32_t)(c) * 0xd37e9a1ce2148403ULL)>>32 ))
b
SCIP_VAR ** b
Definition: circlepacking.c:56
a
SCIP_VAR * a
Definition: circlepacking.c:57

Definition at line 511 of file pub_misc.h.

Referenced by SCIP_DECL_HASHKEYVAL().

◆ SCIPhashFour

#define SCIPhashFour (   a,
  b,
  c,
  d 
)
Value:
((uint32_t)((((uint32_t)(a) + 0xbd5c89185f082658ULL) * ((uint32_t)(b) + 0xe5fcc163aef32782ULL) + \
((uint32_t)(c) + 0xd37e9a1ce2148403ULL) * ((uint32_t)(d) + 0x926f2d4dc4a67218ULL))>>32 ))
b
SCIP_VAR ** b
Definition: circlepacking.c:56
a
SCIP_VAR * a
Definition: circlepacking.c:57

Definition at line 514 of file pub_misc.h.

Referenced by SCIP_DECL_HASHKEYVAL().

◆ SCIPhashFive

#define SCIPhashFive (   a,
  b,
  c,
  d,
  e 
)
Value:
((uint32_t)((((uint32_t)(a) + 0xbd5c89185f082658ULL) * ((uint32_t)(b) + 0xe5fcc163aef32782ULL) + \
((uint32_t)(c) + 0xd37e9a1ce2148403ULL) * ((uint32_t)(d) + 0x926f2d4dc4a67218ULL) + \
(uint32_t)(e) * 0xf48d4cd331e14327ULL)>>32 ))
b
SCIP_VAR ** b
Definition: circlepacking.c:56
a
SCIP_VAR * a
Definition: circlepacking.c:57

Definition at line 517 of file pub_misc.h.

◆ SCIPhashSix

#define SCIPhashSix (   a,
  b,
  c,
  d,
  e,
  f 
)
Value:
((uint32_t)((((uint32_t)(a) + 0xbd5c89185f082658ULL) * ((uint32_t)(b) + 0xe5fcc163aef32782ULL) + \
((uint32_t)(c) + 0xd37e9a1ce2148403ULL) * ((uint32_t)(d) + 0x926f2d4dc4a67218ULL) + \
((uint32_t)(e) + 0xf48d4cd331e14327ULL) * ((uint32_t)(f) + 0x80791a4edfc44c75ULL))>>32 ))
b
SCIP_VAR ** b
Definition: circlepacking.c:56
a
SCIP_VAR * a
Definition: circlepacking.c:57

Definition at line 521 of file pub_misc.h.

◆ SCIPhashSeven

#define SCIPhashSeven (   a,
  b,
  c,
  d,
  e,
  f,
  g 
)
Value:
((uint32_t)((((uint32_t)(a) + 0xbd5c89185f082658ULL) * ((uint32_t)(b) + 0xe5fcc163aef32782ULL) + \
((uint32_t)(c) + 0xd37e9a1ce2148403ULL) * ((uint32_t)(d) + 0x926f2d4dc4a67218ULL) + \
((uint32_t)(e) + 0xf48d4cd331e14327ULL) * ((uint32_t)(f) + 0x80791a4edfc44c75ULL) + \
(uint32_t)(g) * 0x7f497d9ba3bd83c0ULL)>>32 ))
b
SCIP_VAR ** b
Definition: circlepacking.c:56
a
SCIP_VAR * a
Definition: circlepacking.c:57

Definition at line 525 of file pub_misc.h.

Function Documentation

◆ SCIPrealHashCode()

static INLINE uint32_t SCIPrealHashCode ( double  x)
static

computes a hashcode for double precision floating point values containing 15 significant bits, the sign and the exponent

Definition at line 534 of file pub_misc.h.

References nnodes, SCIP_Bool, SCIP_DECL_HASHGETKEY(), SCIP_DECL_HASHKEYEQ(), SCIP_DECL_HASHKEYVAL(), SCIP_EXPORT, SCIP_Longint, SCIP_Real, SCIPactivityCreate(), SCIPactivityFree(), SCIPactivityGetDemand(), SCIPactivityGetDuration(), SCIPactivityGetEnergy(), SCIPactivityGetVar(), SCIPbtCreate(), SCIPbtFree(), SCIPbtGetRoot(), SCIPbtIsEmpty(), SCIPbtnodeCreate(), SCIPbtnodeFree(), SCIPbtnodeGetData(), SCIPbtnodeGetLeftchild(), SCIPbtnodeGetParent(), SCIPbtnodeGetRightchild(), SCIPbtnodeGetSibling(), SCIPbtnodeIsLeaf(), SCIPbtnodeIsLeftchild(), SCIPbtnodeIsRightchild(), SCIPbtnodeIsRoot(), SCIPbtnodeSetData(), SCIPbtnodeSetLeftchild(), SCIPbtnodeSetParent(), SCIPbtnodeSetRightchild(), SCIPbtPrintGml(), SCIPbtSetRoot(), SCIPcalcBinomCoef(), SCIPcalcGreComDiv(), SCIPcalcIntegralScalar(), SCIPcalcMachineEpsilon(), SCIPcalcMultihashSize(), SCIPcalcSmaComMul(), SCIPdigraphAddArc(), SCIPdigraphAddArcSafe(), SCIPdigraphComputeDirectedComponents(), SCIPdigraphComputeUndirectedComponents(), SCIPdigraphFree(), SCIPdigraphFreeComponents(), SCIPdigraphGetArticulationPoints(), SCIPdigraphGetComponent(), SCIPdigraphGetNArcs(), SCIPdigraphGetNComponents(), SCIPdigraphGetNNodes(), SCIPdigraphGetNodeData(), SCIPdigraphGetNSuccessors(), SCIPdigraphGetSuccessors(), SCIPdigraphGetSuccessorsData(), SCIPdigraphPrint(), SCIPdigraphPrintComponents(), SCIPdigraphPrintGml(), SCIPdigraphResize(), SCIPdigraphSetNodeData(), SCIPdigraphSetNSuccessors(), SCIPdigraphSetSizes(), SCIPdigraphTopoSortComponents(), SCIPdisjointsetClear(), SCIPdisjointsetFind(), SCIPdisjointsetGetComponentCount(), SCIPdisjointsetGetSize(), SCIPdisjointsetUnion(), SCIPfindSimpleRational(), SCIPhashmapCreate(), SCIPhashmapEntryGetImage(), SCIPhashmapEntryGetImageInt(), SCIPhashmapEntryGetImageReal(), SCIPhashmapEntryGetOrigin(), SCIPhashmapEntrySetImage(), SCIPhashmapEntrySetImageInt(), SCIPhashmapEntrySetImageReal(), SCIPhashmapExists(), SCIPhashmapFree(), SCIPhashmapGetEntry(), SCIPhashmapGetImage(), SCIPhashmapGetImageInt(), SCIPhashmapGetImageReal(), SCIPhashmapGetNElements(), SCIPhashmapGetNEntries(), SCIPhashmapInsert(), SCIPhashmapInsertInt(), SCIPhashmapInsertReal(), SCIPhashmapIsEmpty(), SCIPhashmapPrintStatistics(), SCIPhashmapRemove(), SCIPhashmapRemoveAll(), SCIPhashmapSetImage(), SCIPhashmapSetImageInt(), SCIPhashmapSetImageReal(), SCIPhashsetCreate(), SCIPhashsetExists(), SCIPhashsetFree(), SCIPhashsetGetNElements(), SCIPhashsetGetNSlots(), SCIPhashsetGetSlots(), SCIPhashsetInsert(), SCIPhashsetIsEmpty(), SCIPhashsetPrintStatistics(), SCIPhashsetRemove(), SCIPhashsetRemoveAll(), SCIPhashtableClear(), SCIPhashtableCreate(), SCIPhashtableExists(), SCIPhashtableFree(), SCIPhashtableGetEntry(), SCIPhashtableGetLoad(), SCIPhashtableGetNElements(), SCIPhashtableGetNEntries(), SCIPhashtableInsert(), SCIPhashtablePrintStatistics(), SCIPhashtableRemove(), SCIPhashtableRemoveAll(), SCIPhashtableRetrieve(), SCIPhashtableSafeInsert(), SCIPmultihashCreate(), SCIPmultihashExists(), SCIPmultihashFree(), SCIPmultihashGetLoad(), SCIPmultihashGetNElements(), SCIPmultihashInsert(), SCIPmultihashPrintStatistics(), SCIPmultihashRemove(), SCIPmultihashRemoveAll(), SCIPmultihashRetrieve(), SCIPmultihashRetrieveNext(), SCIPmultihashSafeInsert(), SCIPnextafter(), SCIPprofileCreate(), SCIPprofileDeleteCore(), SCIPprofileFindLeft(), SCIPprofileFree(), SCIPprofileGetCapacity(), SCIPprofileGetEarliestFeasibleStart(), SCIPprofileGetLatestFeasibleStart(), SCIPprofileGetLoad(), SCIPprofileGetLoads(), SCIPprofileGetNTimepoints(), SCIPprofileGetTime(), SCIPprofileGetTimepoints(), SCIPprofileInsertCore(), SCIPprofilePrint(), SCIPrealToRational(), and SCIPselectSimpleValue().

Referenced by SCIP_DECL_HASHKEYVAL().

◆ SCIPhashtableCreate()

SCIP_EXPORT SCIP_RETCODE SCIPhashtableCreate ( SCIP_HASHTABLE **  hashtable,
BMS_BLKMEM *  blkmem,
int  tablesize,
SCIP_DECL_HASHGETKEY((*hashgetkey))  ,
SCIP_DECL_HASHKEYEQ((*hashkeyeq))  ,
SCIP_DECL_HASHKEYVAL((*hashkeyval))  ,
void *  userptr 
)

creates a hash table

Parameters
hashtablepointer to store the created hash table
blkmemblock memory used to store hash table entries
tablesizesize of the hash table
userptruser pointer

Definition at line 2236 of file misc.c.

References BMSallocBlockMemory, BMSallocBlockMemoryArray, BMSallocClearBlockMemoryArray, MAX, NULL, SCIP_ALLOC, and SCIP_OKAY.

Referenced by checkConsnames(), collectBranchingCands(), computeSymmetryGroup(), copyConsPseudoboolean(), detectRedundantConstraints(), findCumulativeConss(), inithashmapandtable(), mod2matrixPreprocessColumns(), mod2matrixPreprocessRows(), nodepairqueueCreate(), presoldataInitHashtables(), SCIP_DECL_HEUREXEC(), SCIP_DECL_HEURINIT(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_READERREAD(), SCIP_DECL_READERWRITE(), SCIPcliquetableCreate(), SCIPcutpoolCreate(), SCIPexprParse(), SCIPparamsetCreate(), SCIPprobCreate(), SCIPrealHashCode(), SCIPvariableGraphCreate(), SCIPvisualizeConsCumulative(), SCIPwriteLp(), SCIPwriteMps(), SCIPwritePip(), and writeOpb().

◆ SCIPhashtableFree()

SCIP_EXPORT void SCIPhashtableFree ( SCIP_HASHTABLE **  hashtable)

frees the hash table

Parameters
hashtablepointer to the hash table

Definition at line 2286 of file misc.c.

References BMSfreeBlockMemory, BMSfreeBlockMemoryArray, SCIP_HashTable::hashes, SCIP_HashTable::mask, MAX, SCIP_HashTable::nelements, NULL, SCIP_Real, SCIPdebugMessage, SCIP_HashTable::shift, and SCIP_HashTable::slots.

Referenced by checkConsnames(), collectBranchingCands(), computeSymmetryGroup(), conshdlrdataFree(), copyConsPseudoboolean(), detectRedundantConstraints(), findCumulativeConss(), mod2matrixPreprocessColumns(), mod2matrixPreprocessRows(), nodepairqueueCreate(), SCIP_DECL_HEUREXEC(), SCIP_DECL_HEUREXIT(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_READERREAD(), SCIP_DECL_READERWRITE(), SCIPcliquetableFree(), SCIPcutpoolFree(), SCIPexprParse(), SCIPparamsetFree(), SCIPprobFree(), SCIPrealHashCode(), SCIPvariableGraphFree(), SCIPvisualizeConsCumulative(), SCIPwriteLp(), SCIPwriteMps(), SCIPwritePip(), and writeOpb().

◆ SCIPhashtableClear()

SCIP_EXPORT void SCIPhashtableClear ( SCIP_HASHTABLE *  hashtable)

removes all elements of the hash table

Note
From a performance point of view you should not fill and clear a hash table too often since the clearing can be expensive. Clearing is done by looping over all buckets and removing the hash table lists one-by-one.
Deprecated:
Please use SCIPhashtableRemoveAll()

removes all elements of the hash table

Note
From a performance point of view you should not fill and clear a hash table too often since the clearing can be expensive. Clearing is done by looping over all buckets and removing the hash table lists one-by-one.
Deprecated:
Please use SCIPhashtableRemoveAll()
Parameters
hashtablehash table

Definition at line 2338 of file misc.c.

References SCIPhashtableRemoveAll().

Referenced by SCIPrealHashCode().

◆ SCIPhashtableInsert()

SCIP_EXPORT SCIP_RETCODE SCIPhashtableInsert ( SCIP_HASHTABLE *  hashtable,
void *  element 
)

inserts element in hash table (multiple inserts of same element override the previous entry)

inserts element in hash table

Note
multiple inserts of same element overrides previous one
Parameters
hashtablehash table
elementelement to insert into the table

Definition at line 2487 of file misc.c.

References SCIP_HashTable::hashes, hashtableCheckLoad(), hashtableInsert(), hashvalue(), SCIP_HashTable::mask, NULL, SCIP_CALL, SCIP_HashTable::slots, TRUE, and SCIP_HashTable::userptr.

Referenced by addConflictBinvar(), checkConsnames(), cleanupHashDatas(), collectAggregatedVars(), collectBranchingCands(), collectMinactImplicVars(), computeSymmetryGroup(), copyConsPseudoboolean(), correctPresoldata(), createAndAddAndCons(), createConstantAssignment(), createPresoldata(), createVariable(), detectRedundantConstraints(), determineVariableFixings(), exprparseReadVariable(), findCumulativeConss(), getConflictImplics(), mod2matrixPreprocessColumns(), mod2matrixPreprocessRows(), nodepairqueueCreate(), SCIP_DECL_PRESOLEXEC(), SCIP_DECL_READERWRITE(), SCIPcliquetableAdd(), SCIPcliquetableCleanup(), SCIPcreateConsPseudobooleanWithConss(), SCIPcutpoolAddNewRow(), SCIPprobAddConsName(), SCIPprobAddVarName(), SCIPrealHashCode(), SCIPvariablegraphBreadthFirst(), SCIPvisualizeConsCumulative(), SCIPwriteMps(), selectSolsRandomized(), setupAndSolveSubscipCrossover(), writeOpbFixedVars(), and writeOpbRelevantAnds().

◆ SCIPhashtableSafeInsert()

SCIP_EXPORT SCIP_RETCODE SCIPhashtableSafeInsert ( SCIP_HASHTABLE *  hashtable,
void *  element 
)

inserts element in hash table (multiple insertion of same element is checked and results in an error)

inserts element in hash table

Note
multiple insertion of same element is checked and results in an error
Parameters
hashtablehash table
elementelement to insert into the table

Definition at line 2519 of file misc.c.

References FALSE, SCIP_HashTable::hashes, hashtableCheckLoad(), hashtableInsert(), hashvalue(), SCIP_HashTable::mask, NULL, SCIP_CALL, SCIP_HashTable::slots, and SCIP_HashTable::userptr.

Referenced by paramsetAdd(), SCIP_DECL_HEUREXEC(), and SCIPrealHashCode().

◆ SCIPhashtableRetrieve()

SCIP_EXPORT void* SCIPhashtableRetrieve ( SCIP_HASHTABLE *  hashtable,
void *  key 
)

retrieve element with key from hash table, returns NULL if not existing

Parameters
hashtablehash table
keykey to retrieve

Definition at line 2548 of file misc.c.

References ELEM_DISTANCE, SCIP_HashTable::hashes, hashvalue(), SCIP_HashTable::mask, NULL, SCIP_HashTable::shift, SCIP_HashTable::slots, TRUE, and SCIP_HashTable::userptr.

Referenced by applyVariableAssignment(), cancelCol(), cancelRow(), checkConsnames(), computeSymmetryGroup(), consdataFree(), CREATE_CONSTRAINT(), createAndAddAndCons(), createConstantAssignment(), createLinking(), createVariable(), detectRedundantConstraints(), exprparseReadVariable(), extractGates(), getParallelConsKey(), mod2matrixPreprocessColumns(), mod2matrixPreprocessRows(), nodepairqueueCreate(), paramSetBool(), paramSetChar(), paramSetInt(), paramSetLongint(), paramsetParse(), paramSetReal(), paramsetSetHeuristicsAggressive(), paramsetSetHeuristicsFast(), paramsetSetPresolvingAggressive(), paramsetSetPresolvingFast(), paramsetSetSeparatingAggressive(), paramsetSetSeparatingDefault(), parseAggregation(), parseArrayIndex(), parseConstraint(), parseQuadratic(), parseSolveItem(), parseValue(), parseVariableArrayAssignment(), scalePenalties(), SCIP_DECL_HEUREXEC(), SCIP_DECL_PRESOLEXEC(), SCIPcliquetableAdd(), SCIPcliquetableCleanup(), SCIPcreateConsPseudobooleanWithConss(), SCIPcutpoolAddRow(), SCIPcutpoolDelRow(), SCIPcutpoolIsCutNew(), SCIPhashtableExists(), SCIPparamsetCopyParams(), SCIPparamsetFix(), SCIPparamsetGetBool(), SCIPparamsetGetChar(), SCIPparamsetGetInt(), SCIPparamsetGetLongint(), SCIPparamsetGetParam(), SCIPparamsetGetReal(), SCIPparamsetGetString(), SCIPparamsetIsFixed(), SCIPparamsetSet(), SCIPparamsetSetBool(), SCIPparamsetSetChar(), SCIPparamsetSetDefaultBool(), SCIPparamsetSetDefaultInt(), SCIPparamsetSetEmphasis(), SCIPparamsetSetInt(), SCIPparamsetSetLongint(), SCIPparamsetSetReal(), SCIPparamsetSetString(), SCIPparamsetSetToDefault(), SCIPprobFindCons(), SCIPprobFindVar(), SCIPprobRemoveConsName(), SCIPrealHashCode(), and transformToOrig().

◆ SCIPhashtableExists()

SCIP_EXPORT SCIP_Bool SCIPhashtableExists ( SCIP_HASHTABLE *  hashtable,
void *  element 
)

returns whether the given element exists in the table

Parameters
hashtablehash table
elementelement to search in the table

Definition at line 2599 of file misc.c.

References SCIP_HashTable::hashes, SCIP_HashTable::mask, NULL, SCIPhashtableRetrieve(), SCIP_HashTable::slots, and SCIP_HashTable::userptr.

Referenced by addConflictBinvar(), cleanupHashDatas(), collectAggregatedVars(), collectBranchingCands(), collectMinactImplicVars(), computeSymmetryGroup(), consdataFree(), copyConsPseudoboolean(), correctConshdlrdata(), correctPresoldata(), cutpoolDelCut(), determineVariableFixings(), findCumulativeConss(), getConflictImplics(), mod2matrixPreprocessRows(), printBoundSection(), printColumnSection(), resolvePropagation(), SCIP_DECL_READERWRITE(), SCIPcutpoolAddNewRow(), SCIPprobRemoveVarName(), SCIPrealHashCode(), SCIPvariablegraphBreadthFirst(), SCIPvisualizeConsCumulative(), SCIPwriteMps(), selectSolsRandomized(), transformToOrig(), updateConsanddataUses(), and writeOpbFixedVars().

◆ SCIPhashtableRemove()

SCIP_EXPORT SCIP_RETCODE SCIPhashtableRemove ( SCIP_HASHTABLE *  hashtable,
void *  element 
)

removes element from the hash table, if it exists

Parameters
hashtablehash table
elementelement to remove from the table

Definition at line 2617 of file misc.c.

References ELEM_DISTANCE, SCIP_HashTable::hashes, hashvalue(), SCIP_HashTable::mask, SCIP_HashTable::nelements, NULL, SCIP_OKAY, SCIP_HashTable::shift, SCIP_HashTable::slots, TRUE, and SCIP_HashTable::userptr.

Referenced by cleanupHashDatas(), consdataFree(), correctConshdlrdata(), correctPresoldata(), cutpoolDelCut(), detectRedundantConstraints(), extractGates(), mod2matrixPreprocessRows(), SCIP_DECL_PRESOLEXEC(), SCIPcliquetableCleanup(), SCIPprobRemoveConsName(), SCIPprobRemoveVarName(), SCIPrealHashCode(), and updateConsanddataUses().

◆ SCIPhashtableRemoveAll()

SCIP_EXPORT void SCIPhashtableRemoveAll ( SCIP_HASHTABLE *  hashtable)

removes all elements of the hash table

Parameters
hashtablehash table

Definition at line 2695 of file misc.c.

References BMSclearMemoryArray, SCIP_HashTable::hashes, SCIP_HashTable::mask, SCIP_HashTable::nelements, and NULL.

Referenced by correctPresoldata(), resolvePropagation(), SCIP_DECL_PRESOLEXEC(), SCIPcutpoolClear(), SCIPhashtableClear(), SCIPrealHashCode(), and SCIPvariablegraphBreadthFirst().

◆ SCIPhashtableGetNElements()

SCIP_EXPORT SCIP_Longint SCIPhashtableGetNElements ( SCIP_HASHTABLE *  hashtable)

returns number of hash table elements

Parameters
hashtablehash table

Definition at line 2707 of file misc.c.

References SCIP_HashTable::nelements, and NULL.

Referenced by SCIP_DECL_HEUREXEC(), and SCIPrealHashCode().

◆ SCIPhashtableGetNEntries()

SCIP_EXPORT int SCIPhashtableGetNEntries ( SCIP_HASHTABLE *  hashtable)

gives the number of entries in the internal arrays of a hash table

Parameters
hashtablehash table

Definition at line 2717 of file misc.c.

References SCIP_HashTable::mask.

Referenced by SCIPrealHashCode().

◆ SCIPhashtableGetEntry()

SCIP_EXPORT void* SCIPhashtableGetEntry ( SCIP_HASHTABLE *  hashtable,
int  entryidx 
)

gives the element at the given index or NULL if entry at that index has no element

Parameters
hashtablehash table
entryidxindex of hash table entry

Definition at line 2725 of file misc.c.

References SCIP_HashTable::hashes, NULL, and SCIP_HashTable::slots.

Referenced by SCIPrealHashCode().

◆ SCIPhashtableGetLoad()

SCIP_EXPORT SCIP_Real SCIPhashtableGetLoad ( SCIP_HASHTABLE *  hashtable)

returns the load of the given hash table in percentage

Parameters
hashtablehash table

Definition at line 2734 of file misc.c.

References SCIP_HashTable::mask, SCIP_HashTable::nelements, NULL, and SCIP_Real.

Referenced by SCIPrealHashCode().

◆ SCIPhashtablePrintStatistics()

SCIP_EXPORT void SCIPhashtablePrintStatistics ( SCIP_HASHTABLE *  hashtable,
SCIP_MESSAGEHDLR *  messagehdlr 
)

prints statistics about hash table usage

Parameters
hashtablehash table
messagehdlrmessage handler

Definition at line 2744 of file misc.c.

References ELEM_DISTANCE, SCIP_HashTable::hashes, SCIP_HashTable::mask, MAX, SCIP_HashTable::nelements, NULL, SCIP_Real, and SCIPmessagePrintInfo().

Referenced by SCIPrealHashCode().