pg_controldata output documentation

I'd like to calculate the name of the WAL file associated with the
latest checkpoint using the output from pg_controldata:

Latest checkpoint location:           74/FD9827C0
Prior checkpoint location:            74/FD6FCDC8
Latest checkpoint's REDO location:    74/FD87DDF8
Latest checkpoint's UNDO location:    0/0
Latest checkpoint's TimeLineID:       1
Latest checkpoint's NextXID:          121153385
Latest checkpoint's NextOID:          133301
Latest checkpoint's NextMultiXactId:  1
Latest checkpoint's NextMultiOffset:  0

Is it as simple as 0000000100000074000000FD using Latest checkpoint's
TimeLineID for the first 8 characters and Latest checkpoint location for
the remaining 16 characters?

I'm not running PG ver 8.2 so I don't have access to pg_xlogfile_name

Many thanks ...

Andy
--
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Andrew Rost
National Operational Hydrologic Remote Sensing Center (NOHRSC)
National Weather Service, NOAA
1735 Lake Dr. West, Chanhassen, MN 55317-8582
Voice: (952)361-6610 x 234
Fax: (952)361-6634
andy.rost@noaa.gov
http://www.nohrsc.noaa.gov
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