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/**CFile****************************************************************
FileName [vecHsh.h]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Resizable arrays.]
Synopsis [Hashing vector entries.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: vecHsh.h,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#ifndef ABC__misc__vec__vecHsh_h
#define ABC__misc__vec__vecHsh_h
////////////////////////////////////////////////////////////////////////
/// INCLUDES ///
////////////////////////////////////////////////////////////////////////
#include <stdio.h>
ABC_NAMESPACE_HEADER_START
////////////////////////////////////////////////////////////////////////
/// PARAMETERS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// BASIC TYPES ///
////////////////////////////////////////////////////////////////////////
typedef struct Hsh_IntObj_t_ Hsh_IntObj_t;
struct Hsh_IntObj_t_
{
int iData;
int iNext;
};
typedef struct Hsh_IntMan_t_ Hsh_IntMan_t;
struct Hsh_IntMan_t_
{
int nSize; // data size
Vec_Int_t * vData; // data storage
Vec_Int_t * vTable; // hash table
Vec_Wrd_t * vObjs; // hash objects
};
typedef struct Hsh_VecObj_t_ Hsh_VecObj_t;
struct Hsh_VecObj_t_
{
int nSize;
int iNext;
int pArray[0];
};
typedef struct Hsh_VecMan_t_ Hsh_VecMan_t;
struct Hsh_VecMan_t_
{
Vec_Int_t * vTable; // hash table
Vec_Int_t * vData; // data storage
Vec_Int_t * vMap; // mapping entries into data;
Vec_Int_t vTemp; // temporary array
};
////////////////////////////////////////////////////////////////////////
/// MACRO DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
static inline unsigned * Hsh_IntData( Hsh_IntMan_t * p, int iData ) { return (unsigned *)Vec_IntEntryP( p->vData, p->nSize * iData ); }
static inline Hsh_IntObj_t * Hsh_IntObj( Hsh_IntMan_t * p, int iObj ) { return iObj == -1 ? NULL : (Hsh_IntObj_t *)Vec_WrdEntryP( p->vObjs, iObj ); }
static inline word Hsh_IntWord( int iData, int iNext ) { Hsh_IntObj_t Obj = {iData, iNext}; return *((word *)&Obj); }
static inline Hsh_VecObj_t * Hsh_VecObj( Hsh_VecMan_t * p, int i ) { return i == -1 ? NULL : (Hsh_VecObj_t *)Vec_IntEntryP(p->vData, Vec_IntEntry(p->vMap, i)); }
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Hashing data entries composed of nSize integers.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline Hsh_IntMan_t * Hsh_IntManStart( Vec_Int_t * vData, int nSize, int nEntries )
{
Hsh_IntMan_t * p;
p = ABC_CALLOC( Hsh_IntMan_t, 1 );
p->nSize = nSize;
p->vData = vData;
p->vTable = Vec_IntStartFull( Abc_PrimeCudd(nEntries) );
p->vObjs = Vec_WrdAlloc( nEntries );
return p;
}
static inline void Hsh_IntManStop( Hsh_IntMan_t * p )
{
Vec_IntFree( p->vTable );
Vec_WrdFree( p->vObjs );
ABC_FREE( p );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline int Hsh_IntManHash( unsigned * pData, int nSize, int nTableSize )
{
static int s_Primes[7] = { 4177, 5147, 5647, 6343, 7103, 7873, 8147 };
unsigned char * pDataC = (unsigned char *)pData;
int c, nChars = nSize * 4;
unsigned Key = 0;
for ( c = 0; c < nChars; c++ )
Key += pDataC[c] * s_Primes[c % 7];
return (int)(Key % nTableSize);
}
static inline int * Hsh_IntManLookup( Hsh_IntMan_t * p, unsigned * pData )
{
Hsh_IntObj_t * pObj;
int * pPlace = Vec_IntEntryP( p->vTable, Hsh_IntManHash(pData, p->nSize, Vec_IntSize(p->vTable)) );
for ( ; (pObj = Hsh_IntObj(p, *pPlace)); pPlace = &pObj->iNext )
if ( !memcmp( pData, Hsh_IntData(p, pObj->iData), sizeof(int) * p->nSize ) )
return pPlace;
assert( *pPlace == -1 );
return pPlace;
}
static inline int Hsh_IntManAdd( Hsh_IntMan_t * p, int iData )
{
int i, * pPlace;
if ( Vec_WrdSize(p->vObjs) > Vec_IntSize(p->vTable) )
{
Vec_IntFill( p->vTable, Abc_PrimeCudd(2*Vec_IntSize(p->vTable)), -1 );
for ( i = 0; i < Vec_WrdSize(p->vObjs); i++ )
{
pPlace = Vec_IntEntryP( p->vTable, Hsh_IntManHash(Hsh_IntData(p, i), p->nSize, Vec_IntSize(p->vTable)) );
Hsh_IntObj(p, i)->iNext = *pPlace; *pPlace = i;
}
}
pPlace = Hsh_IntManLookup( p, Hsh_IntData(p, iData) );
if ( *pPlace == -1 )
{
*pPlace = Vec_WrdSize(p->vObjs);
Vec_WrdPush( p->vObjs, Hsh_IntWord(iData, -1) );
return Vec_WrdSize(p->vObjs) - 1;
}
return (word *)Hsh_IntObj(p, *pPlace) - Vec_WrdArray(p->vObjs);
}
/**Function*************************************************************
Synopsis [Hashes data by value.]
Description [Array vData contains data entries, each of 'nSize' integers.
The resulting array contains the indexes of unique data entries.]
SideEffects []
SeeAlso []
***********************************************************************/
static inline Vec_Int_t * Hsh_IntManHashArray( Vec_Int_t * vData, int nSize )
{
Hsh_IntMan_t * p;
Vec_Int_t * vRes = Vec_IntAlloc( 100 );
int i, nEntries = Vec_IntSize(vData) / nSize;
assert( Vec_IntSize(vData) % nSize == 0 );
p = Hsh_IntManStart( vData, nSize, nEntries );
for ( i = 0; i < nEntries; i++ )
Vec_IntPush( vRes, Hsh_IntManAdd(p, i) );
Hsh_IntManStop( p );
return vRes;
}
static inline Vec_Int_t * Hsh_WrdManHashArray( Vec_Wrd_t * vDataW, int nSize )
{
Hsh_IntMan_t * p;
Vec_Int_t Data = { 2*Vec_WrdCap(vDataW), 2*Vec_WrdSize(vDataW), (int *)Vec_WrdArray(vDataW) };
Vec_Int_t * vData = &Data;
Vec_Int_t * vRes = Vec_IntAlloc( 100 );
int i, nEntries = Vec_IntSize(vData) / (2*nSize);
assert( Vec_IntSize(vData) % (2*nSize) == 0 );
p = Hsh_IntManStart( vData, (2*nSize), nEntries );
for ( i = 0; i < nEntries; i++ )
Vec_IntPush( vRes, Hsh_IntManAdd(p, i) );
Hsh_IntManStop( p );
return vRes;
}
static inline Hsh_IntMan_t * Hsh_WrdManHashArrayStart( Vec_Wrd_t * vDataW, int nSize )
{
Hsh_IntMan_t * p;
int i, nEntries = Vec_WrdSize(vDataW) / nSize;
Vec_Int_t * vData = Vec_IntAlloc( 2*Vec_WrdSize(vDataW) );
memcpy( Vec_IntArray(vData), Vec_WrdArray(vDataW), sizeof(word)*Vec_WrdSize(vDataW) );
vData->nSize = 2*Vec_WrdSize(vDataW);
/*
for ( i = 0; i < 30; i++ )
{
extern void Extra_PrintHex( FILE * pFile, unsigned * pTruth, int nVars );
Extra_PrintHex( stdout, (unsigned *) Vec_WrdEntryP(vDataW, i), 6 ); printf( " " );
Kit_DsdPrintFromTruth( (unsigned *) Vec_WrdEntryP(vDataW, i), 6 ); printf( "\n" );
}
*/
assert( Vec_IntSize(vData) % (2*nSize) == 0 );
p = Hsh_IntManStart( vData, (2*nSize), nEntries );
for ( i = 0; i < nEntries; i++ )
Hsh_IntManAdd( p, i );
assert( Vec_WrdSize(p->vObjs) == nEntries );
return p;
}
/**Function*************************************************************
Synopsis [Test procedure.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline void Hsh_IntManHashArrayTest()
{
Vec_Int_t * vData = Vec_IntAlloc( 10 );
Vec_Int_t * vRes;
Vec_IntPush( vData, 12 );
Vec_IntPush( vData, 17 );
Vec_IntPush( vData, 13 );
Vec_IntPush( vData, 12 );
Vec_IntPush( vData, 15 );
Vec_IntPush( vData, 3 );
Vec_IntPush( vData, 16 );
Vec_IntPush( vData, 16 );
Vec_IntPush( vData, 12 );
Vec_IntPush( vData, 17 );
Vec_IntPush( vData, 12 );
Vec_IntPush( vData, 12 );
vRes = Hsh_IntManHashArray( vData, 2 );
Vec_IntPrint( vData );
Vec_IntPrint( vRes );
Vec_IntFree( vData );
Vec_IntFree( vRes );
}
/**Function*************************************************************
Synopsis [Hashing integer arrays.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline Hsh_VecMan_t * Hsh_VecManStart( int nEntries )
{
Hsh_VecMan_t * p;
p = ABC_CALLOC( Hsh_VecMan_t, 1 );
p->vTable = Vec_IntStartFull( Abc_PrimeCudd(nEntries) );
p->vData = Vec_IntAlloc( nEntries * 4 );
p->vMap = Vec_IntAlloc( nEntries );
return p;
}
static inline void Hsh_VecManStop( Hsh_VecMan_t * p )
{
Vec_IntFree( p->vTable );
Vec_IntFree( p->vData );
Vec_IntFree( p->vMap );
ABC_FREE( p );
}
static inline Vec_Int_t * Hsh_VecReadEntry( Hsh_VecMan_t * p, int i )
{
Hsh_VecObj_t * pObj = Hsh_VecObj( p, i );
p->vTemp.nSize = p->vTemp.nCap = pObj->nSize;
p->vTemp.pArray = (int*)pObj + 2;
return &p->vTemp;
}
static inline int Hsh_VecSize( Hsh_VecMan_t * p )
{
return Vec_IntSize(p->vMap);
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline int Hsh_VecManHash( Vec_Int_t * vVec, int nTableSize )
{
static unsigned s_Primes[7] = {4177, 5147, 5647, 6343, 7103, 7873, 8147};
unsigned Key = 0;
int i, Entry;
Vec_IntForEachEntry( vVec, Entry, i )
Key += (unsigned)Entry * s_Primes[i % 7];
return (int)(Key % nTableSize);
}
static inline int Hsh_VecManAdd( Hsh_VecMan_t * p, Vec_Int_t * vVec )
{
Hsh_VecObj_t * pObj;
int i, Ent, * pPlace;
if ( Vec_IntSize(p->vMap) > Vec_IntSize(p->vTable) )
{
Vec_IntFill( p->vTable, Abc_PrimeCudd(2*Vec_IntSize(p->vTable)), -1 );
for ( i = 0; i < Vec_IntSize(p->vMap); i++ )
{
pPlace = Vec_IntEntryP( p->vTable, Hsh_VecManHash(Hsh_VecReadEntry(p, i), Vec_IntSize(p->vTable)) );
Hsh_VecObj(p, i)->iNext = *pPlace; *pPlace = i;
}
}
pPlace = Vec_IntEntryP( p->vTable, Hsh_VecManHash(vVec, Vec_IntSize(p->vTable)) );
for ( ; (pObj = Hsh_VecObj(p, *pPlace)); pPlace = &pObj->iNext )
if ( pObj->nSize == Vec_IntSize(vVec) && !memcmp( pObj->pArray, Vec_IntArray(vVec), sizeof(int) * pObj->nSize ) )
return *pPlace;
*pPlace = Vec_IntSize(p->vMap);
assert( Vec_IntSize(p->vData) % 2 == 0 );
Vec_IntPush( p->vMap, Vec_IntSize(p->vData) );
Vec_IntPush( p->vData, Vec_IntSize(vVec) );
Vec_IntPush( p->vData, -1 );
Vec_IntForEachEntry( vVec, Ent, i )
Vec_IntPush( p->vData, Ent );
if ( Vec_IntSize(vVec) & 1 )
Vec_IntPush( p->vData, -1 );
return Vec_IntSize(p->vMap) - 1;
}
/**Function*************************************************************
Synopsis [Test procedure.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline void Hsh_VecManHashTest()
{
Hsh_VecMan_t * p;
Vec_Int_t * vTemp;
Vec_Int_t * vRes = Vec_IntAlloc( 1000 );
int i;
p = Hsh_VecManStart( 5 );
for ( i = 0; i < 20; i++ )
{
vTemp = Vec_IntStartNatural( i );
Vec_IntPush( vRes, Hsh_VecManAdd( p, vTemp ) );
Vec_IntFree( vTemp );
}
for ( ; i > 0; i-- )
{
vTemp = Vec_IntStartNatural( i );
Vec_IntPush( vRes, Hsh_VecManAdd( p, vTemp ) );
Vec_IntFree( vTemp );
}
Vec_IntPrint( vRes );
Vec_IntFree( vRes );
Hsh_VecManStop( p );
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_HEADER_END
#endif
|
