intFrames.c File Reference

#include "intInt.h"

Go to the source code of this file.

Functions
ABC_NAMESPACE_IMPL_START Aig_Man_t *	Inter_ManFramesInter (Aig_Man_t *pAig, int nFrames, int fAddRegOuts, int fUseTwoFrames)
	DECLARATIONS ///. More...

Function Documentation

ABC_NAMESPACE_IMPL_START Aig_Man_t* Inter_ManFramesInter	(	Aig_Man_t *	pAig,
		int	nFrames,
		int	fAddRegOuts,
		int	fUseTwoFrames
	)

DECLARATIONS ///.

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

]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 []

Definition at line 47 of file intFrames.c.

{
    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;
}