public void setAnsiSqlArithmetic(boolean ansiSqlArithmetic) {
    this.ansiSqlArithmetic = ansiSqlArithmetic;
  }
Create DecimalTypeInfo from input precision/scale, adjusting if necessary to fit max precision
@param precision precision value before adjustment
@param scale scale value before adjustment
@return
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFBaseNumeric.java