code: function ()
  		{
  			var
  				len      = this._iDisplayLength,
  				start    = this._iDisplayStart,
  				calc     = start + len,
  				records  = this.aiDisplay.length,
  				features = this.oFeatures,
  				paginate = features.bPaginate;
  	
  			if ( features.bServerSide ) {
  				return paginate === false || len === -1 ?
  					start + records :
  					Math.min( start+len, this._iRecordsDisplay );
  			}
  			else {
  				return ! paginate || calc>records || len===-1 ?
  					records :
  					calc;
  			}
  		}
docs: Get the display end point - aiDisplay index
  @type function