Size inconsistencies and rounding errors

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mdadm -D and -E use inconsistent units and round incorrectly. It appears that -E lists the size in sectors, but -D lists it in KiB, and both list 1024.16 MiB on a loop device that is exactly 1024 MiB long.
Given the listed KiB/sector count, the correct value should be
1023.99 MiB. This happens both with mdadm 3.2.3-2ubuntu1 on Ubuntu 12.04, as well as with a freshly built git head.

mdadm -E /dev/loop0
/dev/loop0:

          Magic : a92b4efc
        Version : 1.0
    Feature Map : 0x0
     Array UUID : 7c24e61e:4e28fb01:79299569:864ea4e3
           Name : devserv:1  (local to host devserv)

Creation Time : Tue Feb 12 10:36:51 2013
Raid Level : raid1
Raid Devices : 2

Avail Dev Size : 2097128 (1024.16 MiB 1073.73 MB)

     Array Size : 1048564 (1024.16 MiB 1073.73 MB)
   Super Offset : 2097136 sectors
          State : clean
    Device UUID : f4cd17ea:5a311275:f74f2fa2:ffa1b41a

    Update Time : Tue Feb 12 10:39:36 2013
       Checksum : 8314a161 - correct
         Events : 8

Device Role : Active device 0
Array State : A. ('A' == active, '.' == missing, 'R' == replacing)

mdadm -D /dev/md1
/dev/md1:

        Version : 1.0

Creation Time : Tue Feb 12 10:36:51 2013
Raid Level : raid1
Array Size : 1048564 (1024.16 MiB 1073.73 MB)
Used Dev Size : 1048564 (1024.16 MiB 1073.73 MB)
Raid Devices : 2
Total Devices : 1
Persistence : Superblock is persistent

Update Time : Tue Feb 12 10:39:36 2013
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0

Name : devserv:1 (local to host devserv) UUID : 7c24e61e:4e28fb01:79299569:864ea4e3
Events : 8

Number Major Minor RaidDevice State
0 7 0 0 active sync /dev/loop0
2 0 0 2 removed

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