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/**CFile****************************************************************
FileName [ntkDfs.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Netlist representation.]
Synopsis [DFS traversals.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: ntkDfs.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "ntk.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Performs DFS for one node.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Ntk_ManDfs_rec( Ntk_Obj_t * pNode, Vec_Ptr_t * vNodes )
{
Ntk_Obj_t * pNext;
int i;
if ( Ntk_ObjIsTravIdCurrent( pNode ) )
return;
Ntk_ObjSetTravIdCurrent( pNode );
Ntk_ObjForEachFanin( pNode, pNext, i )
Ntk_ManDfs_rec( pNext, vNodes );
Vec_PtrPush( vNodes, pNode );
}
/**Function*************************************************************
Synopsis [Returns the DFS ordered array of all objects except latches.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Ptr_t * Ntk_ManDfs( Ntk_Man_t * pNtk )
{
Vec_Ptr_t * vNodes;
Ntk_Obj_t * pObj;
int i;
Ntk_ManIncrementTravId( pNtk );
vNodes = Vec_PtrAlloc( 100 );
Ntk_ManForEachPo( pNtk, pObj, i )
Ntk_ManDfs_rec( pObj, vNodes );
return vNodes;
}
/**Function*************************************************************
Synopsis [Performs DFS for one node.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Ntk_ManDfsReverse_rec( Ntk_Obj_t * pNode, Vec_Ptr_t * vNodes )
{
Ntk_Obj_t * pNext;
int i;
if ( Ntk_ObjIsTravIdCurrent( pNode ) )
return;
Ntk_ObjSetTravIdCurrent( pNode );
Ntk_ObjForEachFanout( pNode, pNext, i )
Ntk_ManDfsReverse_rec( pNext, vNodes );
Vec_PtrPush( vNodes, pNode );
}
/**Function*************************************************************
Synopsis [Returns the DFS ordered array of all objects except latches.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Ptr_t * Ntk_ManDfsReverse( Ntk_Man_t * pNtk )
{
Vec_Ptr_t * vNodes;
Ntk_Obj_t * pObj;
int i;
Ntk_ManIncrementTravId( pNtk );
vNodes = Vec_PtrAlloc( 100 );
Ntk_ManForEachPi( pNtk, pObj, i )
Ntk_ManDfsReverse_rec( pObj, vNodes );
return vNodes;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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