630             System.arraycopy(digits, 0, newDigits, 0, digits.length);

   630             System.arraycopy(digits, 0, newDigits, 0, digits.length);

   631             other.digits = newDigits;

   631             other.digits = newDigits;

   632             other.tempBuffer = null;

   632             other.tempBuffer = null;

   633             return other;

   633             return other;

   634         } catch (CloneNotSupportedException e) {

   634         } catch (CloneNotSupportedException e) {

   636         }

   636         }

   637     }

   637     }

   638 

   638 

   639     /**

   639     /**

   640      * Returns true if this DigitList represents Long.MIN_VALUE;

   640      * Returns true if this DigitList represents Long.MIN_VALUE;