bdc.h File Reference

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Data Structures
struct	Bdc_Par_t_

Typedefs
typedef typedefABC_NAMESPACE_HEADER_START struct Bdc_Fun_t_	Bdc_Fun_t
	INCLUDES ///. More...
typedef struct Bdc_Man_t_	Bdc_Man_t
typedef struct Bdc_Par_t_	Bdc_Par_t

Functions
static int	Bdc_IsComplement (Bdc_Fun_t *p)
static Bdc_Fun_t *	Bdc_Regular (Bdc_Fun_t *p)
static Bdc_Fun_t *	Bdc_Not (Bdc_Fun_t *p)
static Bdc_Fun_t *	Bdc_NotCond (Bdc_Fun_t *p, int c)
Bdc_Man_t *	Bdc_ManAlloc (Bdc_Par_t *pPars)
	MACRO DEFINITIONS ///. More...
void	Bdc_ManFree (Bdc_Man_t *p)
void	Bdc_ManDecPrint (Bdc_Man_t *p)
int	Bdc_ManDecompose (Bdc_Man_t *p, unsigned *puFunc, unsigned *puCare, int nVars, Vec_Ptr_t *vDivs, int nNodesMax)
Bdc_Fun_t *	Bdc_ManFunc (Bdc_Man_t *p, int i)
	DECLARATIONS ///. More...
Bdc_Fun_t *	Bdc_ManRoot (Bdc_Man_t *p)
int	Bdc_ManNodeNum (Bdc_Man_t *p)
int	Bdc_ManAndNum (Bdc_Man_t *p)
Bdc_Fun_t *	Bdc_FuncFanin0 (Bdc_Fun_t *p)
Bdc_Fun_t *	Bdc_FuncFanin1 (Bdc_Fun_t *p)
void *	Bdc_FuncCopy (Bdc_Fun_t *p)
int	Bdc_FuncCopyInt (Bdc_Fun_t *p)
void	Bdc_FuncSetCopy (Bdc_Fun_t *p, void *pCopy)
void	Bdc_FuncSetCopyInt (Bdc_Fun_t *p, int iCopy)
static int	Bdc_FunObjCopy (Bdc_Fun_t *pObj)
static int	Bdc_FunFanin0Copy (Bdc_Fun_t *pObj)
static int	Bdc_FunFanin1Copy (Bdc_Fun_t *pObj)

Typedef Documentation

typedef typedefABC_NAMESPACE_HEADER_START struct Bdc_Fun_t_ Bdc_Fun_t

INCLUDES ///.

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

FileName [bdc.h]

SystemName [ABC: Logic synthesis and verification system.]

PackageName [Truth-table-based bi-decomposition engine.]

Synopsis [External declarations.]

Author [Alan Mishchenko]

Affiliation [UC Berkeley]

Date [Ver. 1.0. Started - January 30, 2007.]

Revision [

Id:

bdc.h,v 1.00 2007/01/30 00:00:00 alanmi Exp

]PARAMETERS ///BASIC TYPES ///

Definition at line 42 of file bdc.h.

typedef struct Bdc_Man_t_ Bdc_Man_t

Definition at line 43 of file bdc.h.

typedef struct Bdc_Par_t_ Bdc_Par_t

Definition at line 44 of file bdc.h.

Function Documentation

void* Bdc_FuncCopy

(

Bdc_Fun_t *

p

)

Definition at line 52 of file bdcCore.c.

{ return p->pCopy;            }

int Bdc_FuncCopyInt

(

Bdc_Fun_t *

p

)

Definition at line 53 of file bdcCore.c.

{ return p->iCopy;            }

Bdc_Fun_t* Bdc_FuncFanin0

(

Bdc_Fun_t *

p

)

Definition at line 50 of file bdcCore.c.

{ return p->pFan0;            }

Bdc_Fun_t* Bdc_FuncFanin1

(

Bdc_Fun_t *

p

)

Definition at line 51 of file bdcCore.c.

{ return p->pFan1;            }

void Bdc_FuncSetCopy	(	Bdc_Fun_t *	p,
		void *	pCopy
	)

Definition at line 54 of file bdcCore.c.

{ p->pCopy = pCopy;           }

void Bdc_FuncSetCopyInt	(	Bdc_Fun_t *	p,
		int	iCopy
	)

Definition at line 55 of file bdcCore.c.

{ p->iCopy = iCopy;           }

static int Bdc_FunFanin0Copy ( Bdc_Fun_t *  pObj )

inlinestatic

Definition at line 85 of file bdc.h.

{ return Bdc_FunObjCopy( Bdc_FuncFanin0(pObj) );                                        }

static int Bdc_FunFanin1Copy ( Bdc_Fun_t *  pObj )

inlinestatic

Definition at line 86 of file bdc.h.

{ return Bdc_FunObjCopy( Bdc_FuncFanin1(pObj) );                                        }

static int Bdc_FunObjCopy ( Bdc_Fun_t *  pObj )

inlinestatic

Definition at line 84 of file bdc.h.

{ return Abc_LitNotCond( Bdc_FuncCopyInt(Bdc_Regular(pObj)), Bdc_IsComplement(pObj) );  }

static int Bdc_IsComplement ( Bdc_Fun_t *  p )

inlinestatic

Definition at line 54 of file bdc.h.

{ return (int)((ABC_PTRUINT_T)p & (ABC_PTRUINT_T)01);              }

Bdc_Man_t* Bdc_ManAlloc

(

Bdc_Par_t *

pPars

)

MACRO DEFINITIONS ///.

FUNCTION DECLARATIONS ///

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

Synopsis [Allocate resynthesis manager.]

Description []

SideEffects []

SeeAlso []

Definition at line 68 of file bdcCore.c.

{
    Bdc_Man_t * p;
    p = ABC_ALLOC( Bdc_Man_t, 1 );
    memset( p, 0, sizeof(Bdc_Man_t) );
    assert( pPars->nVarsMax > 1 && pPars->nVarsMax < 16 );
    p->pPars = pPars;
    p->nWords = Kit_TruthWordNum( pPars->nVarsMax );
    p->nDivsLimit = 200;
    // internal nodes
    p->nNodesAlloc = 512;
    p->pNodes = ABC_ALLOC( Bdc_Fun_t, p->nNodesAlloc );
    // memory
    p->vMemory = Vec_IntStart( 8 * p->nWords * p->nNodesAlloc );
    Vec_IntClear(p->vMemory);
    // set up hash table
    p->nTableSize = (1 << p->pPars->nVarsMax);
    p->pTable = ABC_ALLOC( Bdc_Fun_t *, p->nTableSize );
    memset( p->pTable, 0, sizeof(Bdc_Fun_t *) * p->nTableSize );
    p->vSpots = Vec_IntAlloc( 256 );
    // truth tables
    p->vTruths = Vec_PtrAllocTruthTables( p->pPars->nVarsMax );
    p->puTemp1 = ABC_ALLOC( unsigned, 4 * p->nWords );
    p->puTemp2 = p->puTemp1 + p->nWords;
    p->puTemp3 = p->puTemp2 + p->nWords;
    p->puTemp4 = p->puTemp3 + p->nWords;
    // start the internal ISFs
    p->pIsfOL = &p->IsfOL;  Bdc_IsfStart( p, p->pIsfOL );
    p->pIsfOR = &p->IsfOR;  Bdc_IsfStart( p, p->pIsfOR );
    p->pIsfAL = &p->IsfAL;  Bdc_IsfStart( p, p->pIsfAL );
    p->pIsfAR = &p->IsfAR;  Bdc_IsfStart( p, p->pIsfAR );   
    return p; 
}

int Bdc_ManAndNum

(

Bdc_Man_t *

p

)

Definition at line 49 of file bdcCore.c.

{ return p->nNodes-p->nVars-1;}

int Bdc_ManDecompose	(	Bdc_Man_t *	p,
		unsigned *	puFunc,
		unsigned *	puCare,
		int	nVars,
		Vec_Ptr_t *	vDivs,
		int	nNodesMax
	)

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

Synopsis [Performs decomposition of one function.]

Description []

SideEffects []

SeeAlso []

Definition at line 291 of file bdcCore.c.

{
    Bdc_Isf_t Isf, * pIsf = &Isf;
    abctime clk = Abc_Clock();
    assert( nVars <= p->pPars->nVarsMax );
    // set current manager parameters
    p->nVars = nVars;
    p->nWords = Kit_TruthWordNum( nVars );
    p->nNodesMax = nNodesMax;
    Bdc_ManPrepare( p, vDivs );
    if ( puCare && Kit_TruthIsConst0( puCare, nVars ) )
    {
        p->pRoot = Bdc_Not(p->pNodes);
        return 0;
    }
    // copy the function
    Bdc_IsfStart( p, pIsf );
    if ( puCare )
    {
        Kit_TruthAnd( pIsf->puOn, puCare, puFunc, p->nVars );
        Kit_TruthSharp( pIsf->puOff, puCare, puFunc, p->nVars );
    }
    else
    {
        Kit_TruthCopy( pIsf->puOn, puFunc, p->nVars );
        Kit_TruthNot( pIsf->puOff, puFunc, p->nVars );
    }
    Bdc_SuppMinimize( p, pIsf );
    // call decomposition
    p->pRoot = Bdc_ManDecompose_rec( p, pIsf );
    p->timeTotal += Abc_Clock() - clk;
    p->numCalls++;
    p->numNodes += p->nNodesNew;
    if ( p->pRoot == NULL )
        return -1;
    if ( !Bdc_ManNodeVerify( p, pIsf, p->pRoot ) )
        printf( "Bdc_ManDecompose(): Internal verification failed.\n" );
//    assert( Bdc_ManNodeVerify( p, pIsf, p->pRoot ) );
    return p->nNodesNew;
}

void Bdc_ManDecPrint

(

Bdc_Man_t *

p

)

Definition at line 260 of file bdcCore.c.

{
    Bdc_Fun_t * pRoot = Bdc_Regular(p->pRoot);

    printf( "F = " );
    if ( pRoot->Type == BDC_TYPE_CONST1 ) // constant 0
        printf( "Constant %d", !Bdc_IsComplement(p->pRoot) );
    else if ( pRoot->Type == BDC_TYPE_PI ) // literal
        printf( "%s%d", Bdc_IsComplement(p->pRoot) ? "!" : "", Bdc_FunId(p,pRoot)-1 );
    else
    {
        if ( Bdc_IsComplement(p->pRoot) )
            printf( "!(" );
        Bdc_ManDecPrint_rec( p, pRoot );
        if ( Bdc_IsComplement(p->pRoot) )
            printf( ")" );
    }
    printf( "\n" );
}

void Bdc_ManFree

(

Bdc_Man_t *

p

)

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

Synopsis [Deallocate resynthesis manager.]

Description []

SideEffects []

SeeAlso []

Definition at line 113 of file bdcCore.c.

{
    if ( p->pPars->fVerbose )
    {
        printf( "Bi-decomposition stats: Calls = %d.  Nodes = %d. Reuse = %d.\n", 
            p->numCalls, p->numNodes, p->numReuse );
        printf( "ANDs = %d.  ORs = %d.  Weak = %d.  Muxes = %d.  Memory = %.2f K\n", 
            p->numAnds, p->numOrs, p->numWeaks, p->numMuxes, 4.0 * Vec_IntSize(p->vMemory) / (1<<10) );
        ABC_PRT( "Cache", p->timeCache );
        ABC_PRT( "Check", p->timeCheck );
        ABC_PRT( "Muxes", p->timeMuxes );
        ABC_PRT( "Supps", p->timeSupps );
        ABC_PRT( "TOTAL", p->timeTotal );
    }
    Vec_IntFree( p->vMemory );
    Vec_IntFree( p->vSpots );
    Vec_PtrFree( p->vTruths );
    ABC_FREE( p->puTemp1 );
    ABC_FREE( p->pNodes );
    ABC_FREE( p->pTable );
    ABC_FREE( p );
}

Bdc_Fun_t* Bdc_ManFunc	(	Bdc_Man_t *	p,
		int	i
	)

DECLARATIONS ///.

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

FileName [bdcCore.c]

SystemName [ABC: Logic synthesis and verification system.]

PackageName [Truth-table-based bi-decomposition engine.]

Synopsis [The gateway to bi-decomposition.]

Author [Alan Mishchenko]

Affiliation [UC Berkeley]

Date [Ver. 1.0. Started - January 30, 2007.]

Revision [

Id:

bdcCore.c,v 1.00 2007/01/30 00:00:00 alanmi Exp

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

Synopsis [Accessing contents of the node.]

Description []

SideEffects []

SeeAlso []

Definition at line 46 of file bdcCore.c.

{ return Bdc_FunWithId(p, i); }

int Bdc_ManNodeNum

(

Bdc_Man_t *

p

)

Definition at line 48 of file bdcCore.c.

{ return p->nNodes;           }

Bdc_Fun_t* Bdc_ManRoot

(

Bdc_Man_t *

p

)

Definition at line 47 of file bdcCore.c.

{ return p->pRoot;            }

static Bdc_Fun_t* Bdc_Not ( Bdc_Fun_t *  p )

inlinestatic

Definition at line 56 of file bdc.h.

{ return (Bdc_Fun_t *)((ABC_PTRUINT_T)p ^  (ABC_PTRUINT_T)01);     }

static Bdc_Fun_t* Bdc_NotCond ( Bdc_Fun_t *  p, int  c  )

inlinestatic

Definition at line 57 of file bdc.h.

{ return (Bdc_Fun_t *)((ABC_PTRUINT_T)p ^  (ABC_PTRUINT_T)(c!=0)); }

static Bdc_Fun_t* Bdc_Regular ( Bdc_Fun_t *  p )

inlinestatic

Definition at line 55 of file bdc.h.

{ return (Bdc_Fun_t *)((ABC_PTRUINT_T)p & ~(ABC_PTRUINT_T)01);     }