intFrames.c

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#include "intInt.h"
 
ABC_NAMESPACE_IMPL_START
 



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;
}

 
 
ABC_NAMESPACE_IMPL_END