public void incrementDestructive() {
    if (!this.negative) {
      if (this.mag.equals(SqlMathUtil.FULLBITS_32, SqlMathUtil.FULLBITS_32,
          SqlMathUtil.FULLBITS_32, SqlMathUtil.FULLBITS_31)) {
        SqlMathUtil.throwOverflowException();
      }
      this.mag.incrementDestructive();
      assert (this.mag.getV3() >= 0);
    } else {
      assert (!this.mag.isZero());
      this.mag.decrementDestructive();
      if (this.mag.isZero()) {
        this.negative = false;
      }
    }
  }
Adds one to this value. This version is destructive, meaning it modifies
this object.
common/src/java/org/apache/hadoop/hive/common/type/SignedInt128.java