public void update32(int v0) {
    this.negative = (v0 < 0);
    this.mag.update(v0 & SqlMathUtil.FULLBITS_31, 0, 0, 0);
  }
Update this object with the given integers, receiving only 32 bits data.

@param v0
         v0
common/src/java/org/apache/hadoop/hive/common/type/SignedInt128.java