bblif.h File Reference

Go to the source code of this file.

Macros
#define	Bbl_ManForEachObj(p, pObj)   for ( pObj = Bbl_ManObjFirst(p); pObj; pObj = Bbl_ManObjNext(p, pObj) )
#define	Bbl_ObjForEachFanin(pObj, pFanin)   for ( pFanin = Bbl_ObjFaninFirst(pObj); pFanin; pFanin = Bbl_ObjFaninNext(pObj, pFanin) )

Typedefs
typedef struct Bbl_Man_t_	Bbl_Man_t
typedef struct Bbl_Obj_t_	Bbl_Obj_t

Enumerations
enum	Bbl_Type_t {   BBL_OBJ_NONE, BBL_OBJ_CI, BBL_OBJ_CO, BBL_OBJ_NODE,   BBL_OBJ_VOID }
	INCLUDES ///. More...

Functions
Bbl_Man_t *	Bbl_ManStart (char *pName)
	MACRO DEFINITIONS ///. More...
void	Bbl_ManCreateObject (Bbl_Man_t *p, Bbl_Type_t Type, int ObjId, int nFanins, char *pSop)
void	Bbl_ManAddFanin (Bbl_Man_t *p, int ObjId, int FaninId)
int	Bbl_ManCheck (Bbl_Man_t *p)
void	Bbl_ManPrintStats (Bbl_Man_t *p)
void	Bbl_ManStop (Bbl_Man_t *p)
void	Bbl_ManDumpBinaryBlif (Bbl_Man_t *p, char *pFileName)
Bbl_Man_t *	Bbl_ManReadBinaryBlif (char *pFileName)
char *	Bbl_ManName (Bbl_Man_t *p)
int	Bbl_ObjIsInput (Bbl_Obj_t *p)
int	Bbl_ObjIsOutput (Bbl_Obj_t *p)
int	Bbl_ObjIsLut (Bbl_Obj_t *p)
int	Bbl_ObjId (Bbl_Obj_t *p)
int	Bbl_ObjIdOriginal (Bbl_Man_t *pMan, Bbl_Obj_t *p)
int	Bbl_ObjFaninNumber (Bbl_Obj_t *p)
char *	Bbl_ObjSop (Bbl_Man_t *pMan, Bbl_Obj_t *p)
Bbl_Obj_t *	Bbl_ManObjFirst (Bbl_Man_t *p)
Bbl_Obj_t *	Bbl_ManObjNext (Bbl_Man_t *p, Bbl_Obj_t *pObj)
Bbl_Obj_t *	Bbl_ObjFaninFirst (Bbl_Obj_t *p)
Bbl_Obj_t *	Bbl_ObjFaninNext (Bbl_Obj_t *p, Bbl_Obj_t *pPrev)
char *	Bbl_ManTruthToSop (unsigned *pTruth, int nVars)
unsigned *	Bbl_ManSopToTruth (char *pSop, int nVars)
void	Bbl_ManDumpBlif (Bbl_Man_t *p, char *pFileName)
void	Bbl_ManSimpleDemo ()

Macro Definition Documentation

#define Bbl_ManForEachObj	(		p,
			pObj
	)		for ( pObj = Bbl_ManObjFirst(p); pObj; pObj = Bbl_ManObjNext(p, pObj) )

Definition at line 257 of file bblif.h.

#define Bbl_ObjForEachFanin	(		pObj,
			pFanin
	)		for ( pFanin = Bbl_ObjFaninFirst(pObj); pFanin; pFanin = Bbl_ObjFaninNext(pObj, pFanin) )

Definition at line 260 of file bblif.h.

Typedef Documentation

typedef struct Bbl_Man_t_ Bbl_Man_t

Definition at line 213 of file bblif.h.

typedef struct Bbl_Obj_t_ Bbl_Obj_t

Definition at line 216 of file bblif.h.

Enumeration Type Documentation

enum Bbl_Type_t

INCLUDES ///.

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

FileName [bblif.h]

SystemName [ABC: Logic synthesis and verification system.]

PackageName [Binary BLIF representation for logic networks.]

Synopsis [External declarations.]

Author [Alan Mishchenko]

Affiliation [UC Berkeley]

Date [Ver. 1.0. Started - February 28, 2009.]

Revision [

Id:

bblif.h,v 1.00 2009/02/28 00:00:00 alanmi Exp

]PARAMETERS ///BASIC TYPES ///

Enumerator
BBL_OBJ_NONE
BBL_OBJ_CI
BBL_OBJ_CO
BBL_OBJ_NODE
BBL_OBJ_VOID

Definition at line 204 of file bblif.h.

             { 
    BBL_OBJ_NONE,                // 0: non-existent object
    BBL_OBJ_CI,                  // 1: primary input
    BBL_OBJ_CO,                  // 2: primary output
    BBL_OBJ_NODE,                // 3: buffer node
    BBL_OBJ_VOID                 // 4: unused object
} Bbl_Type_t;

Function Documentation

void Bbl_ManAddFanin	(	Bbl_Man_t *	p,
		int	ObjId,
		int	FaninId
	)

Fnction*************************************************************

Synopsis [Creates fanin/fanout relationship between two objects.]

Description []

SideEffects []

SeeAlso []

Definition at line 1023 of file bblif.c.

{
    Bbl_Obj_t * pObj, * pFanin;
    int iFanin;
    pObj   = Bbl_ManObj( p, ObjId );
    if ( Bbl_ObjIsCi(pObj) )
    {
        printf( "Bbl_ManAddFanin(): Cannot add fanin of the combinational input (Id = %d).\n", ObjId );
        return;
    }
    pFanin = Bbl_ManObj( p, FaninId );
    if ( Bbl_ObjIsCo(pFanin) )
    {
        printf( "Bbl_ManAddFanin(): Cannot add fanout of the combinational output (Id = %d).\n", FaninId );
        return;
    }
    iFanin = Vec_IntEntry( p->vFaninNums, ObjId );
    if ( iFanin >= (int)pObj->nFanins )
    {
        printf( "Bbl_ManAddFanin(): Trying to add more fanins to object (Id = %d) than declared (%d).\n", ObjId, pObj->nFanins );
        return;
    }
    assert( iFanin < (int)pObj->nFanins );
    Vec_IntWriteEntry( p->vFaninNums, ObjId, iFanin+1 );
    pObj->pFanins[iFanin] = (char *)pObj - (char *)pFanin;
}

int Bbl_ManCheck

(

Bbl_Man_t *

p

)

Fnction*************************************************************

Synopsis [Returns 1 if the manager was created correctly.]

Description []

SideEffects []

SeeAlso []

Definition at line 1062 of file bblif.c.

{
    Bbl_Obj_t * pObj;
    int h, RetValue = 1;
    Bbl_ManForEachObj_int( p->pObjs, pObj, h )
    {
        if ( Bbl_ObjIsNode(pObj) && pObj->Fnc == -1 )
            RetValue = 0, printf( "Bbl_ManCheck(): Node %d does not have function specified.\n", pObj->Id );
        if ( Bbl_ObjIsCi(pObj) && pObj->Fnc != -1 )
            RetValue = 0, printf( "Bbl_ManCheck(): CI with %d has function specified.\n", pObj->Id );
        if ( Bbl_ObjIsCo(pObj) && pObj->Fnc != -1 )
            RetValue = 0, printf( "Bbl_ManCheck(): CO with %d has function specified.\n", pObj->Id );
        if ( Vec_IntEntry(p->vFaninNums, pObj->Id) != (int)pObj->nFanins )
            RetValue = 0, printf( "Bbl_ManCheck(): Object %d has less fanins (%d) than declared (%d).\n", 
                pObj->Id, Vec_IntEntry(p->vFaninNums, pObj->Id), pObj->nFanins );
    }
    return RetValue;
}

void Bbl_ManCreateObject	(	Bbl_Man_t *	p,
		Bbl_Type_t	Type,
		int	ObjId,
		int	nFanins,
		char *	pSop
	)

Fnction*************************************************************

Synopsis [Adds one object.]

Description []

SideEffects []

SeeAlso []

Definition at line 988 of file bblif.c.

{
    Bbl_Obj_t * pObj;
    if ( Type == BBL_OBJ_CI && nFanins != 0 )
    {
        printf( "Attempting to create a combinational input with %d fanins (should be 0).\n", nFanins );
        return;
    }
    if ( Type == BBL_OBJ_CO && nFanins != 1 )
    {
        printf( "Attempting to create a combinational output with %d fanins (should be 1).\n", nFanins );
        return;
    }
    pObj = (Bbl_Obj_t *)Vec_StrFetch( p->pObjs, sizeof(Bbl_Obj_t) + nFanins * sizeof(int) );
    memset( pObj, 0, sizeof(Bbl_Obj_t) );
    Vec_IntSetEntry( p->vId2Obj, ObjId, (char *)pObj - p->pObjs->pArray );
    Vec_IntSetEntry( p->vFaninNums, ObjId, 0 );
    pObj->fCi = (Type == BBL_OBJ_CI);
    pObj->fCo = (Type == BBL_OBJ_CO);
    pObj->Id  = ObjId;
    pObj->Fnc = pSop? Bbl_ManSaveSop(p, pSop, nFanins) : -1;
    pObj->nFanins = nFanins;
}

void Bbl_ManDumpBinaryBlif	(	Bbl_Man_t *	p,
		char *	pFileName
	)

Fnction*************************************************************

Synopsis [Writes data into file.]

Description []

SideEffects []

SeeAlso []

Definition at line 691 of file bblif.c.

{
    FILE * pFile;
    pFile = fopen( pFileName, "wb" );
    Vec_StrWrite( pFile, p->pName );
    Vec_StrWrite( pFile, p->pObjs );
    Vec_StrWrite( pFile, p->pFncs );
    fclose( pFile );
}

void Bbl_ManDumpBlif	(	Bbl_Man_t *	p,
		char *	pFileName
	)

Fnction*************************************************************

Synopsis [Drives text BLIF file for debugging.]

Description []

SideEffects []

SeeAlso []

Definition at line 1218 of file bblif.c.

{
    FILE * pFile;
    Bbl_Obj_t * pObj, * pFanin;
    pFile = fopen( pFileName, "w" );
    fprintf( pFile, "# Test file written by Bbl_ManDumpBlif() in ABC.\n" );
    fprintf( pFile, ".model %s\n", Bbl_ManName(p) );
    // write objects
    Bbl_ManForEachObj( p, pObj )
    {
        if ( Bbl_ObjIsInput(pObj) )
            fprintf( pFile, ".inputs %d\n", Bbl_ObjId(pObj) );
        else if ( Bbl_ObjIsOutput(pObj) )
            fprintf( pFile, ".outputs %d\n", Bbl_ObjId(pObj) );
        else if ( Bbl_ObjIsLut(pObj) )
        {
            fprintf( pFile, ".names" );
            Bbl_ObjForEachFanin( pObj, pFanin )
                fprintf( pFile, " %d", Bbl_ObjId(pFanin) );
            fprintf( pFile, " %d\n", Bbl_ObjId(pObj) );
            fprintf( pFile, "%s", Bbl_ObjSop(p, pObj) );
        }
        else assert( 0 );
    }
    // write output drivers
    Bbl_ManForEachObj( p, pObj )
    {
        if ( !Bbl_ObjIsOutput(pObj) )
            continue;
        fprintf( pFile, ".names" );
        Bbl_ObjForEachFanin( pObj, pFanin )
            fprintf( pFile, " %d", Bbl_ObjId(pFanin) );
        fprintf( pFile, " %d\n", Bbl_ObjId(pObj) );
        fprintf( pFile, "1 1\n" );
    }
    fprintf( pFile, ".end\n" );
    fclose( pFile );
}

char* Bbl_ManName

(

Bbl_Man_t *

p

)

Fnction*************************************************************

Synopsis [Returns the name of the design.]

Description []

SideEffects []

SeeAlso []

Definition at line 1115 of file bblif.c.

{
    return p->pName->pArray;
}

Bbl_Obj_t* Bbl_ManObjFirst

(

Bbl_Man_t *

p

)

Fnction*************************************************************

Synopsis [Returns the first object.]

Description []

SideEffects []

SeeAlso []

Definition at line 1147 of file bblif.c.

{
    return Bbl_VecObj( p->pObjs, 0 );
}

Bbl_Obj_t* Bbl_ManObjNext	(	Bbl_Man_t *	p,
		Bbl_Obj_t *	pObj
	)

Fnction*************************************************************

Synopsis [Returns the next object.]

Description []

SideEffects []

SeeAlso []

Definition at line 1163 of file bblif.c.

{
    char * pNext = (char *)pObj + Bbl_ObjSize(pObj);
    char * pEdge = p->pObjs->pArray + p->pObjs->nSize;
    return (Bbl_Obj_t *)(pNext < pEdge ? pNext : NULL);
}

void Bbl_ManPrintStats

(

Bbl_Man_t *

p

)

Fnction*************************************************************

Synopsis [Prints stats of the manager.]

Description []

SideEffects []

SeeAlso []

Definition at line 749 of file bblif.c.

{
    Bbl_Obj_t * pObj;
    Bbl_Fnc_t * pFnc;
    int h, nFuncs = 0, nNodes = 0, nObjs = 0;
    Bbl_ManForEachObj_int( p->pObjs, pObj, h )
        nObjs++, nNodes += Bbl_ObjIsNode(pObj);
    Bbl_ManForEachFnc_int( p->pFncs, pFnc, h )
        nFuncs++;
    printf( "Total objects = %7d.  Total nodes = %7d. Unique functions = %7d.\n", nObjs, nNodes, nFuncs );
    printf( "Name manager = %5.2f MB\n", 1.0*Vec_StrSize(p->pName)/(1 << 20) );
    printf( "Objs manager = %5.2f MB\n", 1.0*Vec_StrSize(p->pObjs)/(1 << 20) );
    printf( "Fncs manager = %5.2f MB\n", 1.0*Vec_StrSize(p->pFncs)/(1 << 20) );
}

Bbl_Man_t* Bbl_ManReadBinaryBlif

(

char *

pFileName

)

Fnction*************************************************************

Synopsis [Creates manager after reading.]

Description []

SideEffects []

SeeAlso []

Definition at line 712 of file bblif.c.

{
    Bbl_Man_t * p;
    Bbl_Obj_t * pObj;
    char * pBuffer;
    int h;
    p = BBLIF_ALLOC( Bbl_Man_t, 1 );
    memset( p, 0, sizeof(Bbl_Man_t) );
    p->nFileSize = Bbl_ManFileSize( pFileName );
    p->pFileData = Bbl_ManFileRead( pFileName );
    // extract three managers
    pBuffer = p->pFileData;
    p->pName = Vec_StrRead( &pBuffer );
    p->pObjs = Vec_StrRead( &pBuffer );
    p->pFncs = Vec_StrRead( &pBuffer );
    assert( pBuffer - p->pFileData == p->nFileSize );
    // remember original IDs in the objects
    p->vObj2Id = Vec_IntAlloc( 1000 );
    Bbl_ManForEachObj_int( p->pObjs, pObj, h )
    {
        Vec_IntPush( p->vObj2Id, pObj->Id );
        pObj->Id = Vec_IntSize(p->vObj2Id) - 1; 
    }
    return p;
}

void Bbl_ManSimpleDemo

(

)

Fnction*************************************************************

Synopsis [This demo shows using the internal to construct a half-adder.]

Description [We construct the logic network for the half-adder represnted using the BLIF file below]

SideEffects []

SeeAlso []

Definition at line 1446 of file bblif.c.

{
/*
    # There are contents of a BLIF file representing a half-adder:
    .model hadder
    .inputs a     // ID = 1
    .inputs b     // ID = 2
    .inputs cin   // ID = 3
    .outputs s    // ID = 4
    .outputs cout // ID = 5
    .names a b cin s_driver   // ID = 6
    100 1
    010 1
    001 1
    111 1
    .names a b cin cout_driver // ID = 7
    -11 1
    1-1 1
    11- 1
    .names s_driver s
    1 1
    .names cout_driver cout
    1 1
    .end
*/
    Bbl_Man_t * p;
    // start the data manager
    p = Bbl_ManStart( "hadder" );
    // create CIs
    Bbl_ManCreateObject( p, BBL_OBJ_CI, 1, 0, NULL ); // a
    Bbl_ManCreateObject( p, BBL_OBJ_CI, 2, 0, NULL ); // b
    Bbl_ManCreateObject( p, BBL_OBJ_CI, 3, 0, NULL ); // cin
    // create COs
    Bbl_ManCreateObject( p, BBL_OBJ_CO, 4, 1, NULL ); // s
    Bbl_ManCreateObject( p, BBL_OBJ_CO, 5, 1, NULL ); // cout
    // create internal nodes
    Bbl_ManCreateObject( p, BBL_OBJ_NODE, 6, 3, "100 1\n010 1\n001 1\n111 1\n" ); // s_driver
    Bbl_ManCreateObject( p, BBL_OBJ_NODE, 7, 3, "-11 1\n1-1 1\n11- 1\n" );        // cout_driver
    // add fanins of node 6
    Bbl_ManAddFanin( p, 6, 1 ); // s_driver <- a
    Bbl_ManAddFanin( p, 6, 2 ); // s_driver <- b
    Bbl_ManAddFanin( p, 6, 3 ); // s_driver <- cin
    // add fanins of node 7
    Bbl_ManAddFanin( p, 7, 1 ); // cout_driver <- a
    Bbl_ManAddFanin( p, 7, 2 ); // cout_driver <- b
    Bbl_ManAddFanin( p, 7, 3 ); // cout_driver <- cin
    // add fanins of COs
    Bbl_ManAddFanin( p, 4, 6 ); // s <- s_driver
    Bbl_ManAddFanin( p, 5, 7 ); // cout <- cout_driver
    // sanity check
    Bbl_ManCheck( p );
    // write BLIF file as a sanity check
    Bbl_ManDumpBlif( p, "hadder.blif" );
    // write binary BLIF file
    Bbl_ManDumpBinaryBlif( p, "hadder.bblif" );
    // remove the manager
    Bbl_ManStop( p );


//    Bbl_ManTestTruth( "100 1\n010 1\n001 1\n111 1\n", 3 );
//    Bbl_ManTestTruth( "-11 0\n1-1 0\n11- 0\n", 3 );
//    Bbl_ManTestTruth( "--- 1\n", 3 );
}

unsigned* Bbl_ManSopToTruth	(	char *	pSop,
		int	nVars
	)

Fnction*************************************************************

Synopsis [Converting SOP into a truth table.]

Description [The SOP is represented as a C-string, as documented in file "bblif.h". The truth table is returned as a bit-string composed of 2^nVars bits. For functions of less than 6 variables, the full machine word is returned. (The truth table looks as if the function had 5 variables.) The use of this procedure should be limited to Boolean functions with no more than 16 inputs.]

SideEffects []

SeeAlso []

Definition at line 1362 of file bblif.c.

{
    unsigned * pTruth, * pCube, * pVars[16];
    int nWords = nVars <= 5 ? 1 : (1 << (nVars - 5));
    int v, c, w, nCubes, fCompl = 0;
    if ( pSop == NULL )
        return NULL;
    if ( strlen(pSop) % (nVars + 3) != 0 )
    {
        printf( "Bbl_ManSopToTruth(): SOP is represented incorrectly.\n" );
        return NULL;
    }
    // create storage for TTs of the result, elementary variables and the temp cube
    pTruth   = BBLIF_ALLOC( unsigned, nWords );   
    pVars[0] = BBLIF_ALLOC( unsigned, nWords * (nVars+1) );   
    for ( v = 1; v < nVars; v++ )
        pVars[v] = pVars[v-1] + nWords;
    pCube = pVars[v-1] + nWords;
    Bbl_ManSopToTruthElem( nVars, pVars );
    // iterate through the cubes
    memset( pTruth, 0, sizeof(unsigned) * nWords );
    nCubes =  strlen(pSop) / (nVars + 3);
    for ( c = 0; c < nCubes; c++ )
    {
        fCompl = (pSop[nVars+1] == '0');
        memset( pCube, 0xff, sizeof(unsigned) * nWords );
        // iterate through the literals of the cube
        for ( v = 0; v < nVars; v++ )
            if ( pSop[v] == '1' )
                for ( w = 0; w < nWords; w++ )
                    pCube[w] &= pVars[v][w];
            else if ( pSop[v] == '0' )
                for ( w = 0; w < nWords; w++ )
                    pCube[w] &= ~pVars[v][w];
        // add cube to storage
        for ( w = 0; w < nWords; w++ )
            pTruth[w] |= pCube[w];
        // go to the next cube
        pSop += (nVars + 3);
    }
    BBLIF_FREE( pVars[0] );
    if ( fCompl )
        for ( w = 0; w < nWords; w++ )
            pTruth[w] = ~pTruth[w];
    return pTruth;
}

Bbl_Man_t* Bbl_ManStart

(

char *

pName

)

MACRO DEFINITIONS ///.

FUNCTION DECLARATIONS ///

Fnction*************************************************************

Synopsis [Creates manager.]

Description []

SideEffects []

SeeAlso []

Definition at line 806 of file bblif.c.

{
    Bbl_Man_t * p;
    int nLength;
    p = BBLIF_ALLOC( Bbl_Man_t, 1 );
    memset( p, 0, sizeof(Bbl_Man_t) );
    nLength = pName? 4 * ((strlen(pName) + 1) / 4 + 1) : 0;
    p->pName  = Vec_StrAlloc( nLength );
    p->pName->nSize = p->pName->nCap;
    if ( pName )
        strcpy( p->pName->pArray, pName );
    p->pObjs = Vec_StrAlloc( 1 << 16 );
    p->pFncs = Vec_StrAlloc( 1 << 16 );
    p->pEnts = Vec_StrAlloc( 1 << 16 ); p->pEnts->nSize = 1;
    p->vId2Obj = Vec_IntStart( 1 << 10 );
    p->vFaninNums = Vec_IntStart( 1 << 10 );
    return p;
}

void Bbl_ManStop

(

Bbl_Man_t *

p

)

Fnction*************************************************************

Synopsis [Deletes the manager.]

Description []

SideEffects []

SeeAlso []

Definition at line 775 of file bblif.c.

{
    if ( p->vId2Obj )    Vec_IntFree( p->vId2Obj );
    if ( p->vObj2Id )    Vec_IntFree( p->vObj2Id );
    if ( p->vFaninNums ) Vec_IntFree( p->vFaninNums );
    if ( p->pFileData )
    {
        BBLIF_FREE( p->pFileData );
        p->pName->pArray = NULL;
        p->pObjs->pArray = NULL;
        p->pFncs->pArray = NULL;
    }
    if ( p->pEnts )
    Vec_StrFree( p->pEnts );
    Vec_StrFree( p->pName );
    Vec_StrFree( p->pObjs );
    Vec_StrFree( p->pFncs );
    BBLIF_FREE( p );
}

char* Bbl_ManTruthToSop	(	unsigned *	pTruth,
		int	nVars
	)

Fnction*************************************************************

Synopsis [Converting truth table into an SOP.]

Description [The truth table is given as a bit-string pTruth composed of 2^nVars bits. The result is an SOP derived by collecting minterms appearing in the truth table. The SOP is represented as a C-string, as documented in file "bblif.h". It is recommended to limit the use of this procedure to Boolean functions up to 6 inputs.]

SideEffects []

SeeAlso []

Definition at line 1273 of file bblif.c.

{
    char * pResult, * pTemp;
    int nMints, nOnes, b, v;
    assert( nVars >= 0 && nVars <= 16 );
    nMints = (1 << nVars);
    // count the number of ones
    nOnes = 0;
    for ( b = 0; b < nMints; b++ )
        nOnes += ((pTruth[b>>5] >> (b&31)) & 1);
    // handle constants
    if ( nOnes == 0 || nOnes == nMints )
    {
        pResult = pTemp = BBLIF_ALLOC( char, nVars + 4 );        
        for ( v = 0; v < nVars; v++ )
            *pTemp++ = '-';
        *pTemp++ = ' ';
        *pTemp++ = nOnes? '1' : '0';
        *pTemp++ = '\n';
        *pTemp++ = 0;
        assert( pTemp - pResult == nVars + 4 );
        return pResult;
    }
    pResult = pTemp = BBLIF_ALLOC( char, nOnes * (nVars + 3) + 1 );        
    for ( b = 0; b < nMints; b++ )
    {
        if ( ((pTruth[b>>5] >> (b&31)) & 1) == 0 )
            continue;
        for ( v = 0; v < nVars; v++ )
            *pTemp++ = ((b >> v) & 1)? '1' : '0';
        *pTemp++ = ' ';
        *pTemp++ = '1';
        *pTemp++ = '\n';
    }
    *pTemp++ = 0;
    assert( pTemp - pResult == nOnes * (nVars + 3) + 1 );
    return pResult;
}

Bbl_Obj_t* Bbl_ObjFaninFirst

(

Bbl_Obj_t *

p

)

Fnction*************************************************************

Synopsis [Returns the first fanin.]

Description []

SideEffects []

SeeAlso []

Definition at line 1181 of file bblif.c.

{
    return Bbl_ObjFaninNum(p) ? Bbl_ObjFanin( p, 0 ) : NULL;
}

Bbl_Obj_t* Bbl_ObjFaninNext	(	Bbl_Obj_t *	p,
		Bbl_Obj_t *	pPrev
	)

Fnction*************************************************************

Synopsis [Returns the next fanin.]

Description []

SideEffects []

SeeAlso []

Definition at line 1197 of file bblif.c.

{
    Bbl_Obj_t * pFanin;
    int i;
    Bbl_ObjForEachFanin_int( p, pFanin, i )
        if ( pFanin == pPrev )
            break;
    return i < Bbl_ObjFaninNum(p) - 1 ? Bbl_ObjFanin( p, i+1 ) : NULL;
}

int Bbl_ObjFaninNumber

(

Bbl_Obj_t *

p

)

Definition at line 1098 of file bblif.c.

{ return Bbl_ObjFaninNum(p);                  }

int Bbl_ObjId

(

Bbl_Obj_t *

p

)

Definition at line 1096 of file bblif.c.

{ return p->Id;                               }

int Bbl_ObjIdOriginal	(	Bbl_Man_t *	pMan,
		Bbl_Obj_t *	p
	)

Definition at line 1097 of file bblif.c.

{ assert(0); return Vec_IntEntry(pMan->vObj2Id, p->Id);  }

int Bbl_ObjIsInput

(

Bbl_Obj_t *

p

)

Fnction*************************************************************

Synopsis [Misc APIs.]

Description []

SideEffects []

SeeAlso []

Definition at line 1093 of file bblif.c.

{ return Bbl_ObjIsCi(p);                      }

int Bbl_ObjIsLut

(

Bbl_Obj_t *

p

)

Definition at line 1095 of file bblif.c.

{ return Bbl_ObjIsNode(p);                    }

int Bbl_ObjIsOutput

(

Bbl_Obj_t *

p

)

Definition at line 1094 of file bblif.c.

{ return Bbl_ObjIsCo(p);                      }

char* Bbl_ObjSop	(	Bbl_Man_t *	pMan,
		Bbl_Obj_t *	p
	)

Definition at line 1099 of file bblif.c.

{ return Bbl_ManSop(pMan, p->Fnc);            }