[jira] [Created] (HIVE-17240) function acos(2) should be null

["Yuming Wang (JIRA)" <ji...@apache.org>]

Yuming Wang created HIVE-17240:
----------------------------------

             Summary: function acos(2) should be null
                 Key: HIVE-17240
                 URL: https://issues.apache.org/jira/browse/HIVE-17240
             Project: Hive
          Issue Type: Bug
          Components: UDF
    Affects Versions: 2.2.0, 1.2.2, 1.1.1
            Reporter: Yuming Wang


{{acos(2)}} should be null, same as MySQL:
{code:sql}
hive> desc function extended acos;
OK
acos(x) - returns the arc cosine of x if -1<=x<=1 or NULL otherwise
Example:
  > SELECT acos(1) FROM src LIMIT 1;
  0
  > SELECT acos(2) FROM src LIMIT 1;
  NULL
Time taken: 0.009 seconds, Fetched: 6 row(s)
hive> select acos(2);
OK
NaN
Time taken: 0.437 seconds, Fetched: 1 row(s)
{code}

{code:sql}
mysql>  select acos(2);
+---------+
| acos(2) |
+---------+
|    NULL |
+---------+
1 row in set (0.00 sec)
{code}



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