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/**CFile****************************************************************
FileName [intFrames.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Interpolation engine.]
Synopsis [Sequential AIG unrolling for interpolation.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 24, 2008.]
Revision [$Id: intFrames.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "intInt.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Create timeframes of the manager for interpolation.]
Description [The resulting manager is combinational. The primary inputs
corresponding to register outputs are ordered first. The only POs of the
manager is the property output of the last timeframe.]
SideEffects []
SeeAlso []
***********************************************************************/
Aig_Man_t * Inter_ManFramesInter( Aig_Man_t * pAig, int nFrames, int fAddRegOuts, int fUseTwoFrames )
{
Aig_Man_t * pFrames;
Aig_Obj_t * pObj, * pObjLi, * pObjLo;
Aig_Obj_t * pLastPo = NULL;
int i, f;
assert( Saig_ManRegNum(pAig) > 0 );
assert( Saig_ManPoNum(pAig)-Saig_ManConstrNum(pAig) == 1 );
pFrames = Aig_ManStart( Aig_ManNodeNum(pAig) * nFrames );
// map the constant node
Aig_ManConst1(pAig)->pData = Aig_ManConst1( pFrames );
// create variables for register outputs
if ( fAddRegOuts )
{
Saig_ManForEachLo( pAig, pObj, i )
pObj->pData = Aig_ManConst0( pFrames );
}
else
{
Saig_ManForEachLo( pAig, pObj, i )
pObj->pData = Aig_ObjCreateCi( pFrames );
}
// add timeframes
for ( f = 0; f < nFrames; f++ )
{
// create PI nodes for this frame
Saig_ManForEachPi( pAig, pObj, i )
pObj->pData = Aig_ObjCreateCi( pFrames );
// add internal nodes of this frame
Aig_ManForEachNode( pAig, pObj, i )
pObj->pData = Aig_And( pFrames, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
// add outputs for constraints
Saig_ManForEachPo( pAig, pObj, i )
{
if ( i < Saig_ManPoNum(pAig)-Saig_ManConstrNum(pAig) )
continue;
Aig_ObjCreateCo( pFrames, Aig_Not( Aig_ObjChild0Copy(pObj) ) );
}
if ( f == nFrames - 1 )
break;
// remember the last PO
pObj = Aig_ManCo( pAig, 0 );
pLastPo = Aig_ObjChild0Copy(pObj);
// save register inputs
Saig_ManForEachLi( pAig, pObj, i )
pObj->pData = Aig_ObjChild0Copy(pObj);
// transfer to register outputs
Saig_ManForEachLiLo( pAig, pObjLi, pObjLo, i )
pObjLo->pData = pObjLi->pData;
}
// create POs for each register output
if ( fAddRegOuts )
{
Saig_ManForEachLi( pAig, pObj, i )
Aig_ObjCreateCo( pFrames, Aig_ObjChild0Copy(pObj) );
}
// create the only PO of the manager
else
{
pObj = Aig_ManCo( pAig, 0 );
// add the last PO
if ( pLastPo == NULL || !fUseTwoFrames )
pLastPo = Aig_ObjChild0Copy(pObj);
else
pLastPo = Aig_Or( pFrames, pLastPo, Aig_ObjChild0Copy(pObj) );
Aig_ObjCreateCo( pFrames, pLastPo );
}
Aig_ManCleanup( pFrames );
return pFrames;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
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