Scippy

SCIP

Solving Constraint Integer Programs

Detailed Description

very lightweight hash set of pointers

Functions

SCIP_RETCODE SCIPhashsetCreate (SCIP_HASHSET **hashset, BMS_BLKMEM *blkmem, int size)
 
void SCIPhashsetFree (SCIP_HASHSET **hashset, BMS_BLKMEM *blkmem)
 
SCIP_RETCODE SCIPhashsetInsert (SCIP_HASHSET *hashset, BMS_BLKMEM *blkmem, void *element)
 
SCIP_Bool SCIPhashsetExists (SCIP_HASHSET *hashset, void *element)
 
SCIP_RETCODE SCIPhashsetRemove (SCIP_HASHSET *hashset, void *element)
 
void SCIPhashsetPrintStatistics (SCIP_HASHSET *hashset, SCIP_MESSAGEHDLR *messagehdlr)
 
SCIP_Bool SCIPhashsetIsEmpty (SCIP_HASHSET *hashset)
 
int SCIPhashsetGetNElements (SCIP_HASHSET *hashset)
 
int SCIPhashsetGetNSlots (SCIP_HASHSET *hashset)
 
void ** SCIPhashsetGetSlots (SCIP_HASHSET *hashset)
 
void SCIPhashsetRemoveAll (SCIP_HASHSET *hashset)
 

Function Documentation

◆ SCIPhashsetCreate()

SCIP_RETCODE SCIPhashsetCreate ( SCIP_HASHSET **  hashset,
BMS_BLKMEM blkmem,
int  size 
)

creates a hash set of pointers

Parameters
hashsetpointer to store the created hash set
blkmemblock memory used to store hash set entries
sizeinitial size of the hash set; it is guaranteed that the set is not resized if at most that many elements are inserted

Definition at line 3709 of file misc.c.

References BMSallocBlockMemory, BMSallocClearBlockMemoryArray, MAX, NULL, SCIP_ALLOC, SCIP_OKAY, and SCIPhashsetGetNSlots().

Referenced by computeSymmetryGroup(), DECL_CURVCHECK(), detectSocNorm(), dualBoundStrengthening(), mod2MatrixAddCol(), processHashlists(), SCIPrealHashCode(), and SCIPreoptSaveActiveConss().

◆ SCIPhashsetFree()

void SCIPhashsetFree ( SCIP_HASHSET **  hashset,
BMS_BLKMEM blkmem 
)

frees the hash set

Parameters
hashsetpointer to the hash set
blkmemblock memory used to store hash set entries

Definition at line 3740 of file misc.c.

References BMSfreeBlockMemory, BMSfreeBlockMemoryArray, and SCIPhashsetGetNSlots().

Referenced by computeSymmetryGroup(), DECL_CURVCHECK(), destroyMod2Matrix(), detectSocNorm(), dualBoundStrengthening(), mod2matrixRemoveCol(), processHashlists(), SCIPrealHashCode(), and SCIPreoptFree().

◆ SCIPhashsetInsert()

SCIP_RETCODE SCIPhashsetInsert ( SCIP_HASHSET hashset,
BMS_BLKMEM blkmem,
void *  element 
)

inserts new element into the hash set

Parameters
hashsethash set
blkmemblock memory used to store hash set entries
elementelement to insert

Definition at line 3750 of file misc.c.

References hashsetCheckLoad(), hashsetInsert(), NULL, SCIP_CALL, SCIP_OKAY, and SCIP_HashSet::slots.

Referenced by computeSymmetryGroup(), DECL_CURVCHECK(), detectSocNorm(), dualBoundStrengthening(), mod2colLinkRow(), processHashlists(), SCIPrealHashCode(), SCIPreoptApplyGlbConss(), and SCIPreoptSaveActiveConss().

◆ SCIPhashsetExists()

◆ SCIPhashsetRemove()

SCIP_RETCODE SCIPhashsetRemove ( SCIP_HASHSET hashset,
void *  element 
)

removes an element from the hash set, if it exists

Parameters
hashsethash set
elementorigin to remove from the list

Definition at line 3808 of file misc.c.

References ELEM_DISTANCE, hashSetDesiredPos(), SCIP_HashSet::nelements, NULL, SCIP_OKAY, SCIPhashsetExists(), SCIPhashsetGetNSlots(), SCIP_HashSet::slots, and TRUE.

Referenced by detectSocNorm(), mod2colUnlinkRow(), and SCIPrealHashCode().

◆ SCIPhashsetPrintStatistics()

void SCIPhashsetPrintStatistics ( SCIP_HASHSET hashset,
SCIP_MESSAGEHDLR messagehdlr 
)

prints statistics about hash set usage

Parameters
hashsethash set
messagehdlrmessage handler

Definition at line 3883 of file misc.c.

References hashSetDesiredPos(), MAX, SCIP_HashSet::nelements, NULL, SCIP_Real, SCIPhashsetGetNSlots(), SCIPmessagePrintInfo(), and SCIP_HashSet::slots.

Referenced by SCIPrealHashCode().

◆ SCIPhashsetIsEmpty()

SCIP_Bool SCIPhashsetIsEmpty ( SCIP_HASHSET hashset)

indicates whether a hash set has no entries

Parameters
hashsethash set

Definition at line 3934 of file misc.c.

References SCIP_HashSet::nelements.

Referenced by SCIPrealHashCode().

◆ SCIPhashsetGetNElements()

int SCIPhashsetGetNElements ( SCIP_HASHSET hashset)

gives the number of elements in a hash set

Parameters
hashsethash set

Definition at line 3942 of file misc.c.

References SCIP_HashSet::nelements.

Referenced by detectSocNorm(), mod2matrixPreprocessColumns(), SCIP_DECL_HASHKEYEQ(), and SCIPrealHashCode().

◆ SCIPhashsetGetNSlots()

◆ SCIPhashsetGetSlots()

void** SCIPhashsetGetSlots ( SCIP_HASHSET hashset)

gives the array of hash set slots; contains all elements in indetermined order and may contain NULL values

Parameters
hashsethash set

Definition at line 3958 of file misc.c.

References SCIP_HashSet::slots.

Referenced by doSeparation(), mod2colUnlinkRow(), mod2matrixPreprocessColumns(), mod2matrixRemoveCol(), SCIP_DECL_HASHKEYEQ(), SCIP_DECL_HASHKEYVAL(), and SCIPrealHashCode().

◆ SCIPhashsetRemoveAll()

void SCIPhashsetRemoveAll ( SCIP_HASHSET hashset)

removes all entries in a hash set.

Parameters
hashsethash set

Definition at line 3966 of file misc.c.

References BMSclearMemoryArray, SCIP_HashSet::nelements, SCIPhashsetGetNSlots(), and SCIP_HashSet::slots.

Referenced by cleanActiveConss(), and SCIPrealHashCode().