public static String fastToFormatString(
      int fastSignum, long fast0, long fast1, long fast2,
      int fastIntegerDigitCount, int fastScale,
      int formatScale) {
    byte[] scratchBuffer = new byte[FAST_SCRATCH_BUFFER_LEN_TO_BYTES];
    final int index =
        doFastToFormatBytes(
          fastSignum, fast0, fast1, fast2,
          fastIntegerDigitCount, fastScale,
          formatScale,
          scratchBuffer);
    return
        new String(scratchBuffer, index, FAST_SCRATCH_BUFFER_LEN_TO_BYTES - index, StandardCharsets.UTF_8);
  }
*********************************************************************************************
  // Decimal Division / Remainder.

  /**
EXPERMIMENTAL: Division when divisor fits in a single decimal longword.

@return  remainderSubexpr2
storage-api/src/java/org/apache/hadoop/hive/common/type/FastHiveDecimalImpl.java