fxuMatrix.c File Reference

#include "fxuInt.h"

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Functions
ABC_NAMESPACE_IMPL_START Fxu_Matrix *	Fxu_MatrixAllocate ()
	DECLARATIONS ///.
void	Fxu_MatrixDelete (Fxu_Matrix *p)
Fxu_Var *	Fxu_MatrixAddVar (Fxu_Matrix *p)
Fxu_Cube *	Fxu_MatrixAddCube (Fxu_Matrix *p, Fxu_Var *pVar, int iCube)
void	Fxu_MatrixAddLiteral (Fxu_Matrix *p, Fxu_Cube *pCube, Fxu_Var *pVar)
void	Fxu_MatrixDelDivisor (Fxu_Matrix *p, Fxu_Double *pDiv)
void	Fxu_MatrixDelLiteral (Fxu_Matrix *p, Fxu_Lit *pLit)
void	Fxu_MatrixAddSingle (Fxu_Matrix *p, Fxu_Var *pVar1, Fxu_Var *pVar2, int Weight)
void	Fxu_MatrixAddDivisor (Fxu_Matrix *p, Fxu_Cube *pCube1, Fxu_Cube *pCube2)

Function Documentation

Fxu_MatrixAddCube()

Fxu_Cube * Fxu_MatrixAddCube	(	Fxu_Matrix *	p,
		Fxu_Var *	pVar,
		int	iCube )

Function*************************************************************

Synopsis [Adds a literal to the matrix.]

Description []

SideEffects []

SeeAlso []

Definition at line 183 of file fxuMatrix.c.

{
    Fxu_Cube * pCube;
    pCube = MEM_ALLOC_FXU( p, Fxu_Cube, 1 );
    memset( pCube, 0, sizeof(Fxu_Cube) );
    pCube->pVar  = pVar;
    pCube->iCube = iCube;
    Fxu_ListMatrixAddCube( p, pCube );
    return pCube;
}

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Fxu_MatrixAddDivisor()

void Fxu_MatrixAddDivisor	(	Fxu_Matrix *	p,
		Fxu_Cube *	pCube1,
		Fxu_Cube *	pCube2 )

Function*************************************************************

Synopsis []

Description []

SideEffects []

SeeAlso []

Definition at line 301 of file fxuMatrix.c.

{
    Fxu_Pair * pPair;
    Fxu_Double * pDiv;
    int nBase, nLits1, nLits2;
    int fFound;
    unsigned Key;
 
    // canonicize the pair
    Fxu_PairCanonicize( &pCube1, &pCube2 );
    // compute the hash key
    Key = Fxu_PairHashKey( p, pCube1, pCube2, &nBase, &nLits1, &nLits2 );
 
    // create the cube pair
    pPair = Fxu_PairAlloc( p, pCube1, pCube2 );
    pPair->nBase  = nBase;
    pPair->nLits1 = nLits1;
    pPair->nLits2 = nLits2;
 
    // check if the divisor for this pair already exists
    fFound = 0;
    Key %= p->nTableSize;
    Fxu_TableForEachDouble( p, Key, pDiv )
    {
        if ( Fxu_PairCompare( pPair, pDiv->lPairs.pTail ) ) // they are equal
        {
            fFound = 1;
            break;
        }
    }
 
    if ( !fFound )
    {   // create the new divisor
        pDiv = MEM_ALLOC_FXU( p, Fxu_Double, 1 );
        memset( pDiv, 0, sizeof(Fxu_Double) );
        pDiv->Key = Key;
        // set the number of this divisor
        pDiv->Num = p->nDivsTotal++; // p->nDivs;
        // insert the divisor in the table
        Fxu_ListTableAddDivisor( p, pDiv );
        // set the initial cost of the divisor
        pDiv->Weight -= pPair->nLits1 + pPair->nLits2;
    }
 
    // link the pair to the cubes
    Fxu_PairAdd( pPair );
    // connect the pair and the divisor
    pPair->pDiv = pDiv;
    Fxu_ListDoubleAddPairLast( pDiv, pPair );    
    // update the max number of pairs in a divisor
//    if ( p->nPairsMax < pDiv->lPairs.nItems )
//        p->nPairsMax = pDiv->lPairs.nItems;
    // update the divisor's weight
    pDiv->Weight += pPair->nLits1 + pPair->nLits2 - 1 + pPair->nBase;
    if ( fFound ) // update the divisor in the heap
        Fxu_HeapDoubleUpdate( p->pHeapDouble, pDiv );
    else  // add the new divisor to the heap
        Fxu_HeapDoubleInsert( p->pHeapDouble, pDiv );
}

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Fxu_MatrixAddLiteral()

void Fxu_MatrixAddLiteral	(	Fxu_Matrix *	p,
		Fxu_Cube *	pCube,
		Fxu_Var *	pVar )

Function*************************************************************

Synopsis [Adds a literal to the matrix.]

Description []

SideEffects []

SeeAlso []

Definition at line 205 of file fxuMatrix.c.

{
    Fxu_Lit * pLit;
    pLit = MEM_ALLOC_FXU( p, Fxu_Lit, 1 );
    memset( pLit, 0, sizeof(Fxu_Lit) );
    // insert the literal into two linked lists
    Fxu_ListCubeAddLiteral( pCube, pLit );
    Fxu_ListVarAddLiteral( pVar, pLit );
    // set the back pointers
    pLit->pCube = pCube;
    pLit->pVar  = pVar;
    pLit->iCube = pCube->iCube;
    pLit->iVar  = pVar->iVar;
    // increment the literal counter
    p->nEntries++;
}

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Fxu_MatrixAddSingle()

void Fxu_MatrixAddSingle	(	Fxu_Matrix *	p,
		Fxu_Var *	pVar1,
		Fxu_Var *	pVar2,
		int	Weight )

Function*************************************************************

Synopsis [Creates and adds a single cube divisor.]

Description []

SideEffects []

SeeAlso []

Definition at line 274 of file fxuMatrix.c.

{
    Fxu_Single * pSingle;
    assert( pVar1->iVar < pVar2->iVar );
    pSingle = MEM_ALLOC_FXU( p, Fxu_Single, 1 );
    memset( pSingle, 0, sizeof(Fxu_Single) );
    pSingle->Num = p->lSingles.nItems;
    pSingle->Weight = Weight;
    pSingle->HNum = 0;
    pSingle->pVar1 = pVar1;
    pSingle->pVar2 = pVar2;
    Fxu_ListMatrixAddSingle( p, pSingle );
    // add to the heap
    Fxu_HeapSingleInsert( p->pHeapSingle, pSingle );
}

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Fxu_MatrixAddVar()

Fxu_Var * Fxu_MatrixAddVar

(

Fxu_Matrix *

p

)

Function*************************************************************

Synopsis [Adds a variable to the matrix.]

Description [This procedure always adds variables at the end of the matrix. It assigns the var's node and number. It adds the var to the linked list of all variables and to the table of all nodes.]

SideEffects []

SeeAlso []

Definition at line 161 of file fxuMatrix.c.

{
    Fxu_Var * pVar;
    pVar = MEM_ALLOC_FXU( p, Fxu_Var, 1 );
    memset( pVar, 0, sizeof(Fxu_Var) );
    pVar->iVar = p->lVars.nItems;
    p->ppVars[pVar->iVar] = pVar;
    Fxu_ListMatrixAddVariable( p, pVar );
    return pVar;
}

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Fxu_MatrixAllocate()

ABC_NAMESPACE_IMPL_START Fxu_Matrix * Fxu_MatrixAllocate

(

)

DECLARATIONS ///.

CFile****************************************************************

FileName [fxuMatrix.c]

PackageName [MVSIS 2.0: Multi-valued logic synthesis system.]

Synopsis [Procedures to manipulate the sparse matrix.]

Author [MVSIS Group]

Affiliation [UC Berkeley]

Date [Ver. 1.0. Started - February 1, 2003.]

Revision [

Id

fxuMatrix.c,v 1.0 2003/02/01 00:00:00 alanmi Exp

] FUNCTION DEFINITIONS /// Function*************************************************************

Synopsis []

Description []

SideEffects []

SeeAlso []

Definition at line 43 of file fxuMatrix.c.

{
    Fxu_Matrix * p;
    p = ABC_ALLOC( Fxu_Matrix, 1 );
    memset( p, 0, sizeof(Fxu_Matrix) );
    p->nTableSize = Abc_PrimeCudd(10000);
    p->pTable = ABC_ALLOC( Fxu_ListDouble, p->nTableSize );
    memset( p->pTable, 0, sizeof(Fxu_ListDouble) * p->nTableSize );
#ifndef USE_SYSTEM_MEMORY_MANAGEMENT
    {
        // get the largest size in bytes for the following structures:
        // Fxu_Cube, Fxu_Var, Fxu_Lit, Fxu_Pair, Fxu_Double, Fxu_Single
        // (currently, Fxu_Var, Fxu_Pair, Fxu_Double take 10 machine words)
        int nSizeMax, nSizeCur;
        nSizeMax = -1;
        nSizeCur = sizeof(Fxu_Cube);
        if ( nSizeMax < nSizeCur )
             nSizeMax = nSizeCur;
        nSizeCur = sizeof(Fxu_Var);
        if ( nSizeMax < nSizeCur )
             nSizeMax = nSizeCur;
        nSizeCur = sizeof(Fxu_Lit);
        if ( nSizeMax < nSizeCur )
             nSizeMax = nSizeCur;
        nSizeCur = sizeof(Fxu_Pair);
        if ( nSizeMax < nSizeCur )
             nSizeMax = nSizeCur;
        nSizeCur = sizeof(Fxu_Double);
        if ( nSizeMax < nSizeCur )
             nSizeMax = nSizeCur;
        nSizeCur = sizeof(Fxu_Single);
        if ( nSizeMax < nSizeCur )
             nSizeMax = nSizeCur;
        p->pMemMan  = Extra_MmFixedStart( nSizeMax ); 
    }
#endif
    p->pHeapDouble = Fxu_HeapDoubleStart();
    p->pHeapSingle = Fxu_HeapSingleStart();
    p->vPairs = Vec_PtrAlloc( 100 );
    return p;
}

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Fxu_MatrixDelDivisor()

void Fxu_MatrixDelDivisor	(	Fxu_Matrix *	p,
		Fxu_Double *	pDiv )

Function*************************************************************

Synopsis [Deletes the divisor from the matrix.]

Description []

SideEffects []

SeeAlso []

Definition at line 233 of file fxuMatrix.c.

{
    // delete divisor from the table
    Fxu_ListTableDelDivisor( p, pDiv );
    // recycle the divisor
    MEM_FREE_FXU( p, Fxu_Double, 1, pDiv );
}

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Fxu_MatrixDelete()

void Fxu_MatrixDelete

(

Fxu_Matrix *

p

)

Function*************************************************************

Synopsis []

Description []

SideEffects []

SeeAlso []

Definition at line 96 of file fxuMatrix.c.

{
    Fxu_HeapDoubleCheck( p->pHeapDouble );
    Fxu_HeapDoubleStop( p->pHeapDouble );
    Fxu_HeapSingleStop( p->pHeapSingle );
 
    // delete other things
#ifdef USE_SYSTEM_MEMORY_MANAGEMENT
    // this code is not needed when the custom memory manager is used
    {
        Fxu_Cube * pCube, * pCube2;
        Fxu_Var * pVar, * pVar2;
        Fxu_Lit * pLit, * pLit2;
        Fxu_Double * pDiv, * pDiv2;
        Fxu_Single * pSingle, * pSingle2;
        Fxu_Pair * pPair, * pPair2;
        int i;
        // delete the divisors
        Fxu_MatrixForEachDoubleSafe( p, pDiv, pDiv2, i )
        {
            Fxu_DoubleForEachPairSafe( pDiv, pPair, pPair2 )
                MEM_FREE_FXU( p, Fxu_Pair, 1, pPair );
               MEM_FREE_FXU( p, Fxu_Double, 1, pDiv );
        }
        Fxu_MatrixForEachSingleSafe( p, pSingle, pSingle2 )
               MEM_FREE_FXU( p, Fxu_Single, 1, pSingle );
        // delete the entries
        Fxu_MatrixForEachCube( p, pCube )
            Fxu_CubeForEachLiteralSafe( pCube, pLit, pLit2 )
                MEM_FREE_FXU( p, Fxu_Lit, 1, pLit );
        // delete the cubes
        Fxu_MatrixForEachCubeSafe( p, pCube, pCube2 )
            MEM_FREE_FXU( p, Fxu_Cube, 1, pCube );
        // delete the vars
        Fxu_MatrixForEachVariableSafe( p, pVar, pVar2 )
            MEM_FREE_FXU( p, Fxu_Var, 1, pVar );
    }
#else
    Extra_MmFixedStop( p->pMemMan );
#endif
 
    Vec_PtrFree( p->vPairs );
    ABC_FREE( p->pppPairs );
    ABC_FREE( p->ppPairs );
//    ABC_FREE( p->pPairsTemp );
    ABC_FREE( p->pTable );
    ABC_FREE( p->ppVars );
    ABC_FREE( p );
}

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Fxu_MatrixDelLiteral()

void Fxu_MatrixDelLiteral	(	Fxu_Matrix *	p,
		Fxu_Lit *	pLit )

Function*************************************************************

Synopsis [Deletes the literal fromthe matrix.]

Description []

SideEffects []

SeeAlso []

Definition at line 252 of file fxuMatrix.c.

{
    // delete the literal
    Fxu_ListCubeDelLiteral( pLit->pCube, pLit );
    Fxu_ListVarDelLiteral( pLit->pVar, pLit );
    MEM_FREE_FXU( p, Fxu_Lit, 1, pLit );
    // increment the literal counter
    p->nEntries--;
}

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