ROUND() function returns incorrect value

Build tested:

InfiniDB> getcalpontsoft
getcalpontsoftwareinfo Mon May 23 16:47:57 2016

Name : infinidb-platform Relocations: (not relocatable)
Version : 5.0 Vendor: MariaDB, Inc.
Release : 0 Build Date: Sun 15 May 2016 07:24:29 PM CDT
Install Date: Mon 16 May 2016 05:21:51 PM CDT Build Host: srvbuilder
Group : Applications Source RPM: infinidb-5.0-0.src.rpm

ColumnStore returns:

select cidx, CDECIMAL1, ROUND(CDECIMAL1,-1) from datatypetestm order by cidx

cidx CDECIMAL1 ROUND(CDECIMAL1,-1)
1 -9 -9
2 -8 -9
3 -7 -9
4 -6 -9
5 -5 -9
6 5 9
7 6 9
8 7 9
9 8 9
10 9 9
11 0 0
11 rows in set

MySQL and MariaDB returns:

select cidx, CDECIMAL1, ROUND(CDECIMAL1,-1) from datatypetestm order by cidx

cidx CDECIMAL1 ROUND(CDECIMAL1,-1)
1 -9 -10
2 -8 -10
3 -7 -10
4 -6 -10
5 -5 -10
6 5 10
7 6 10
8 7 10
9 8 10
10 9 10
11 0 0
11 rows in set