sum() and avg() return incorrect result for float when calculation overflows float range

Build tested:

getsoftwareinfo Fri Jun 17 17:03:28 2016

Name : mariadb-columnstore-platform Relocations: (not relocatable)
Version : 1.0 Vendor: MariaDB Corporation Ab
Release : 1 Build Date: Mon 13 Jun 2016 06:50:26 PM CDT
Install Date: Fri 17 Jun 2016 10:53:22 AM CDT Build Host: srvbuilder
Group : Applications Source RPM: mariadb-columnstore-1.0-1.src.rpm

MariaDB [mytest]> select cfloat from datatypetestm;
-------------

-------------

-------------
11 rows in set (0.02 sec)

MariaDB [mytest]> select SUM(CFLOAT) from datatypetestm;
--------------

--------------

--------------
1 row in set (0.01 sec)

MariaDB [mytest]> select AVG(CFLOAT) from datatypetestm;
-------------

-------------

-------------
1 row in set (0.01 sec)

Both MariaDB and InfiniDB return 0.