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/**CFile****************************************************************
FileName [ntlMap.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Netlist representation.]
Synopsis [Derives mapped network from AIG.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: ntlMap.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "ntl.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Allocates mapping for the given AIG.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Ptr_t * Ntl_MappingAlloc( int nLuts, int nVars )
{
char * pMemory;
Ntl_Lut_t ** pArray;
int nEntrySize, i;
nEntrySize = sizeof(Ntl_Lut_t) + sizeof(int) * nVars + sizeof(unsigned) * Aig_TruthWordNum(nVars);
pArray = (Ntl_Lut_t **)malloc( (sizeof(Ntl_Lut_t *) + nEntrySize) * nLuts );
pMemory = (char *)(pArray + nLuts);
memset( pMemory, 0, nEntrySize * nLuts );
for ( i = 0; i < nLuts; i++ )
{
pArray[i] = (Ntl_Lut_t *)pMemory;
pArray[i]->pFanins = (int *)(pMemory + sizeof(Ntl_Lut_t));
pArray[i]->pTruth = (unsigned *)(pMemory + sizeof(Ntl_Lut_t) + sizeof(int) * nVars);
pMemory += nEntrySize;
}
return Vec_PtrAllocArray( (void **)pArray, nLuts );
}
/**Function*************************************************************
Synopsis [Derives trivial mapping from the AIG.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Ptr_t * Ntl_MappingFromAig( Aig_Man_t * p )
{
Vec_Ptr_t * vMapping;
Ntl_Lut_t * pLut;
Aig_Obj_t * pObj;
int i, k = 0, nBytes = 4;
vMapping = Ntl_MappingAlloc( Aig_ManAndNum(p) + (int)(Aig_ManConst1(p)->nRefs > 0), 2 );
if ( Aig_ManConst1(p)->nRefs > 0 )
{
pLut = Vec_PtrEntry( vMapping, k++ );
pLut->Id = 0;
pLut->nFanins = 0;
memset( pLut->pTruth, 0xFF, nBytes );
}
Aig_ManForEachNode( p, pObj, i )
{
pLut = Vec_PtrEntry( vMapping, k++ );
pLut->Id = pObj->Id;
pLut->nFanins = 2;
pLut->pFanins[0] = Aig_ObjFaninId0(pObj);
pLut->pFanins[1] = Aig_ObjFaninId1(pObj);
if ( Aig_ObjFaninC0(pObj) && Aig_ObjFaninC1(pObj) )
memset( pLut->pTruth, 0x11, nBytes );
else if ( !Aig_ObjFaninC0(pObj) && Aig_ObjFaninC1(pObj) )
memset( pLut->pTruth, 0x22, nBytes );
else if ( Aig_ObjFaninC0(pObj) && !Aig_ObjFaninC1(pObj) )
memset( pLut->pTruth, 0x44, nBytes );
else if ( !Aig_ObjFaninC0(pObj) && !Aig_ObjFaninC1(pObj) )
memset( pLut->pTruth, 0x88, nBytes );
}
assert( k == Vec_PtrSize(vMapping) );
return vMapping;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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