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/**CFile****************************************************************
FileName [ivyCheck.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [And-Inverter Graph package.]
Synopsis [AIG checking procedures.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - May 11, 2006.]
Revision [$Id: ivyCheck.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
***********************************************************************/
#include "ivy.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Checks the consistency of the AIG manager.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Ivy_ManCheck( Ivy_Man_t * pMan )
{
Ivy_Obj_t * pObj, * pObj2;
int i;
Ivy_ManForEachObj( pMan, pObj, i )
{
// skip deleted nodes
if ( Ivy_ObjIsNone(pObj) )
continue;
// consider the constant node and PIs
if ( i == 0 || Ivy_ObjIsPi(pObj) )
{
if ( Ivy_ObjFaninId0(pObj) || Ivy_ObjFaninId1(pObj) || Ivy_ObjLevel(pObj) )
{
printf( "Ivy_ManCheck: The AIG has non-standard constant or PI node with ID \"%d\".\n", pObj->Id );
return 0;
}
continue;
}
if ( Ivy_ObjIsPo(pObj) )
{
if ( Ivy_ObjFaninId1(pObj) )
{
printf( "Ivy_ManCheck: The AIG has non-standard PO node with ID \"%d\".\n", pObj->Id );
return 0;
}
continue;
}
if ( Ivy_ObjIsBuf(pObj) )
{
continue;
}
if ( Ivy_ObjIsLatch(pObj) )
{
if ( Ivy_ObjFaninId1(pObj) != 0 )
{
printf( "Ivy_ManCheck: The latch with ID \"%d\" contains second fanin.\n", pObj->Id );
return 0;
}
if ( Ivy_ObjInit(pObj) == 0 )
{
printf( "Ivy_ManCheck: The latch with ID \"%d\" does not have initial state.\n", pObj->Id );
return 0;
}
pObj2 = Ivy_TableLookup( pObj );
if ( pObj2 != pObj )
printf( "Ivy_ManCheck: Latch with ID \"%d\" is not in the structural hashing table.\n", pObj->Id );
continue;
}
// consider the AND node
if ( !Ivy_ObjFaninId0(pObj) || !Ivy_ObjFaninId1(pObj) )
{
printf( "Ivy_ManCheck: The AIG has internal node \"%d\" with a constant fanin.\n", pObj->Id );
return 0;
}
if ( Ivy_ObjFaninId0(pObj) <= Ivy_ObjFaninId1(pObj) )
{
printf( "Ivy_ManCheck: The AIG has node \"%d\" with a wrong ordering of fanins.\n", pObj->Id );
return 0;
}
// if ( Ivy_ObjLevel(pObj) != Ivy_ObjLevelNew(pObj) )
// printf( "Ivy_ManCheck: Node with ID \"%d\" has level that does not agree with the fanin levels.\n", pObj->Id );
pObj2 = Ivy_TableLookup( pObj );
if ( pObj2 != pObj )
printf( "Ivy_ManCheck: Node with ID \"%d\" is not in the structural hashing table.\n", pObj->Id );
}
// count the number of nodes in the table
if ( Ivy_TableCountEntries(pMan) != Ivy_ManAndNum(pMan) + Ivy_ManExorNum(pMan) + Ivy_ManLatchNum(pMan) )
{
printf( "Ivy_ManCheck: The number of nodes in the structural hashing table is wrong.\n" );
return 0;
}
return 1;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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