AND this idset with the operand idset. Place the result in this idset.

Declared in file: hzIntset.h
Defined in file : hzIntset.cpp

Function Logic:

Function body:

hzIntset& hzIntset::operator&= (hzIntset& op)
{
   //  AND this idset with the operand idset. Place the result in this idset.
   //  
   //  Argument: The operand idset
   //  
   //  Returns: Reference to this idset in all cases.
   _hzfunc("hzIntset::operator&=") ;
   hzVect<_idsNode*>*  pNodesA ;   //  Vector of nodes (this)
   hzVect<_idsNode*>*  pNodesB ;   //  Vector of nodes (operand)
   _idsNode*           pNodeA ;    //  Node (this)
   _idsNode*           pNodeB ;    //  Node (operand)
   _idset_seg          segA ;      //  Value segment (this)
   _idset_seg          segB ;      //  Value segment (operand)
   xbufIter            ziA ;       //  EUI data iterator (this)
   xbufIter            ziB ;       //  EUI data iterator (operand)
   uint32_t            numNodes ;  //  Number of nodes
   uint32_t    nA ;    //  Iterator
   uint32_t    nB ;    //  Iterator
   uint32_t    nSofar ;    //  Value so far as a result of iteration
   uint32_t    nFound ;    //  Number of ids in EUI
   //  Is there anything to AND with?
   if (!op.Count())
       { Clear() ; return *this ; }
   //  If this map is empty an AND operation cannot populate it - just return
   if (!Count())
       return *this ;
   if (op.mx->m_bVect)
   {
       pNodesB = (hzVect<_idsNode*>*) op.mx->m_pData ;
       numNodes = pNodesB->Count() ;
   }
   else
   {
       pNodesB = 0;
       numNodes = 1;
   }
   //  Go through operand idset nodes
   for (nB = 0; nB < numNodes ; nB++)
   {
       pNodeB = op.mx->m_bVect ? pNodesB->operator[](nB) : (_idsNode*) op.mx->m_pData ;
       ziB = pNodeB->m_Data ;
       for (; !ziB.eof() ;)
       {
           nFound = _readEUI(segB, nSofar, ziB) ;
       }
   }
   return *this ;
}