Programming instructions

62
Intermec Fingerprint 6.13 – Programmer's Guide
6. FILE SYSTEM, cont'd.
10. Arrays, cont'd.
CSUM
The checksum for string arrays can be calculated according to one
of two different algorithms (LRC or DRC) and returned by means
of the CSUM statement.
In this example, the checksum of a string array is calculated
according both to the LRC (Logitudinal Redundancy Check) and
the DRC (Diagonal Redundancy Check) algorithms:
10 FOR Q%=0 TO 3
20 A$=STR$(Q%)
30 ARRAY$(Q%)="Element No. "+A$
40 NEXT
50 CSUM 1,ARRAY$,B%:PRINT "LRC checksum: ";B%
60 CSUM 2,ARRAY$,C%:PRINT "DRC checksum: ";C%
RUN
Yields:
LRC checksum: 0
DRC checksum: 197
Note!
Do not confuse CSUM with CHECKSUM,
see chapter 6.9.