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/**CFile****************************************************************
FileName [abcMini.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Network and node package.]
Synopsis [Interface to the minimalistic AIG package.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: abcMini.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "abc.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
static Aig_Man_t * Abc_NtkToAig( Abc_Ntk_t * pNtk );
static Abc_Ntk_t * Abc_NtkFromAig( Abc_Ntk_t * pNtkOld, Aig_Man_t * pMan );
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Gives the current ABC network to AIG manager for processing.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Abc_NtkMiniBalance( Abc_Ntk_t * pNtk )
{
Abc_Ntk_t * pNtkAig;
Aig_Man_t * pMan, * pTemp;
assert( Abc_NtkIsStrash(pNtk) );
// convert to the AIG manager
pMan = Abc_NtkToAig( pNtk );
if ( pMan == NULL )
return NULL;
if ( !Aig_ManCheck( pMan ) )
{
printf( "AIG check has failed.\n" );
Aig_ManStop( pMan );
return NULL;
}
// perform balance
Aig_ManPrintStats( pMan );
pMan = Aig_ManBalance( pTemp = pMan, 1 );
Aig_ManStop( pTemp );
Aig_ManPrintStats( pMan );
// convert from the AIG manager
pNtkAig = Abc_NtkFromAig( pNtk, pMan );
if ( pNtkAig == NULL )
return NULL;
Aig_ManStop( pMan );
// make sure everything is okay
if ( !Abc_NtkCheck( pNtkAig ) )
{
printf( "Abc_NtkStrash: The network check has failed.\n" );
Abc_NtkDelete( pNtkAig );
return NULL;
}
return pNtkAig;
}
/**Function*************************************************************
Synopsis [Converts the network from the AIG manager into ABC.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Aig_Man_t * Abc_NtkToAig( Abc_Ntk_t * pNtk )
{
Aig_Man_t * pMan;
Abc_Obj_t * pObj;
int i;
// create the manager
pMan = Aig_ManStart();
// transfer the pointers to the basic nodes
Abc_AigConst1(pNtk)->pCopy = (Abc_Obj_t *)Aig_ManConst1(pMan);
Abc_NtkForEachCi( pNtk, pObj, i )
pObj->pCopy = (Abc_Obj_t *)Aig_ObjCreatePi(pMan);
// perform the conversion of the internal nodes (assumes DFS ordering)
Abc_NtkForEachNode( pNtk, pObj, i )
pObj->pCopy = (Abc_Obj_t *)Aig_And( pMan, (Aig_Obj_t *)Abc_ObjChild0Copy(pObj), (Aig_Obj_t *)Abc_ObjChild1Copy(pObj) );
// create the POs
Abc_NtkForEachCo( pNtk, pObj, i )
Aig_ObjCreatePo( pMan, (Aig_Obj_t *)Abc_ObjChild0Copy(pObj) );
Aig_ManCleanup( pMan );
return pMan;
}
/**Function*************************************************************
Synopsis [Converts the network from the AIG manager into ABC.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Abc_NtkFromAig( Abc_Ntk_t * pNtk, Aig_Man_t * pMan )
{
Vec_Ptr_t * vNodes;
Abc_Ntk_t * pNtkNew;
Aig_Obj_t * pObj;
int i;
// perform strashing
pNtkNew = Abc_NtkStartFrom( pNtk, ABC_NTK_STRASH, ABC_FUNC_AIG );
// transfer the pointers to the basic nodes
Aig_ManConst1(pMan)->pData = Abc_AigConst1(pNtkNew);
Aig_ManForEachPi( pMan, pObj, i )
pObj->pData = Abc_NtkCi(pNtkNew, i);
// rebuild the AIG
vNodes = Aig_ManDfs( pMan );
Vec_PtrForEachEntry( vNodes, pObj, i )
pObj->pData = Abc_AigAnd( pNtkNew->pManFunc, (Abc_Obj_t *)Aig_ObjChild0Copy(pObj), (Abc_Obj_t *)Aig_ObjChild1Copy(pObj) );
Vec_PtrFree( vNodes );
// connect the PO nodes
Aig_ManForEachPo( pMan, pObj, i )
Abc_ObjAddFanin( Abc_NtkCo(pNtkNew, i), (Abc_Obj_t *)Aig_ObjChild0Copy(pObj) );
if ( !Abc_NtkCheck( pNtkNew ) )
fprintf( stdout, "Abc_NtkFromAig(): Network check has failed.\n" );
return pNtkNew;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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