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/**CFile****************************************************************
FileName [nwkStrash.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Logic network representation.]
Synopsis [Performs structural hashing for the network.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: nwkStrash.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "nwk.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Derives AIG from the local functions of the node.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Nwk_ManStrashNode_rec( Aig_Man_t * p, Hop_Obj_t * pObj )
{
assert( !Hop_IsComplement(pObj) );
if ( !Hop_ObjIsNode(pObj) || Hop_ObjIsMarkA(pObj) )
return;
Nwk_ManStrashNode_rec( p, Hop_ObjFanin0(pObj) );
Nwk_ManStrashNode_rec( p, Hop_ObjFanin1(pObj) );
pObj->pData = Aig_And( p, (Aig_Obj_t *)Hop_ObjChild0Copy(pObj), (Aig_Obj_t *)Hop_ObjChild1Copy(pObj) );
assert( !Hop_ObjIsMarkA(pObj) ); // loop detection
Hop_ObjSetMarkA( pObj );
}
/**Function*************************************************************
Synopsis [Derives AIG from the local functions of the node.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Aig_Obj_t * Nwk_ManStrashNode( Aig_Man_t * p, Nwk_Obj_t * pObj )
{
Hop_Man_t * pMan = pObj->pMan->pManHop;
Hop_Obj_t * pRoot = pObj->pFunc;
Nwk_Obj_t * pFanin;
int i;
assert( Nwk_ObjIsNode(pObj) );
// check the constant case
if ( Hop_Regular(pRoot) == Hop_ManConst1(pMan) )
return Aig_NotCond( Aig_ManConst1(p), Hop_IsComplement(pRoot) );
// set elementary variables
Nwk_ObjForEachFanin( pObj, pFanin, i )
Hop_IthVar(pMan, i)->pData = pFanin->pCopy;
// strash the AIG of this node
Nwk_ManStrashNode_rec( p, Hop_Regular(pRoot) );
Hop_ConeUnmark_rec( Hop_Regular(pRoot) );
// return the final node
return Aig_NotCond( Hop_Regular(pRoot)->pData, Hop_IsComplement(pRoot) );
}
/**Function*************************************************************
Synopsis [Derives AIG from the logic network.]
Description [Assumes topological ordering of nodes.]
SideEffects []
SeeAlso []
***********************************************************************/
Aig_Man_t * Nwk_ManStrash( Nwk_Man_t * pNtk )
{
Aig_Man_t * pMan;//, * pTemp;
Aig_Obj_t * pObjNew;
Nwk_Obj_t * pObj;
int i, Level;
pMan = Aig_ManStart( Nwk_ManGetAigNodeNum(pNtk) );
pMan->pName = Aig_UtilStrsav( pNtk->pName );
pMan->pSpec = Aig_UtilStrsav( pNtk->pSpec );
pMan->pManTime = Tim_ManDup( pNtk->pManTime, 1 );
Tim_ManIncrementTravId( pMan->pManTime );
Nwk_ManForEachObj( pNtk, pObj, i )
{
if ( Nwk_ObjIsCi(pObj) )
{
pObjNew = Aig_ObjCreatePi(pMan);
Level = Tim_ManGetPiArrival( pMan->pManTime, pObj->PioId );
Aig_ObjSetLevel( pObjNew, Level );
}
else if ( Nwk_ObjIsCo(pObj) )
{
pObjNew = Aig_ObjCreatePo( pMan, Aig_NotCond(Nwk_ObjFanin0(pObj)->pCopy, pObj->fCompl) );
Level = Aig_ObjLevel( pObjNew );
Tim_ManSetPoArrival( pMan->pManTime, pObj->PioId, (float)Level );
}
else if ( Nwk_ObjIsNode(pObj) )
{
pObjNew = Nwk_ManStrashNode( pMan, pObj );
}
else
assert( 0 );
pObj->pCopy = pObjNew;
}
Aig_ManCleanup( pMan );
// pMan = Aig_ManDupOrdered( pTemp = pMan );
// Aig_ManStop( pTemp );
return pMan;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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