Re: Mod 10 check digit calculation

(written many years ago, and this only works for 20 character string)
jim

H*          CALC CHECK DIGIT FOR 20 CHAR NUMBER.
H*          FROM USPS PUB 109, CHAPTER 7
H*          WEIGHTED MOD 10

H*
H*  09/07/00  WRITTEN    JF
H*  04/02/02  convert to ile

C     *ENTRY        PLIST
C                   PARM                    @IN20            20
C                   PARM                    @CKD              1
C* MOVE INPUT TO AN ARRAY
C                   MOVEA     @IN20         @IN
C                   MOVE      *ZEROS        EVEN              3 0
C                   MOVE      *ZEROS        ODD               3 0
C                   MOVE      *ZEROS        @CKD#             1 0
C* ADD UP EVEN POSITIONS (RIGHT TO LEFT), SO ,19, 17, 15, ETC
C                   Z-ADD     19            X                 3 0
C                   DO        10
C                   MOVE      @IN(X)        @1
C                   ADD       @1            EVEN
C                   SUB       2             X
C                   ENDDO
C* ADD UP ODD POSITIONS (RIGHT TO LEFT), SO ,18, 16, 14, ETC.
C                   Z-ADD     18            X
C                   DO        9
C                   MOVE      @IN(X)        @1
C                   ADD       @1            ODD
C                   SUB       2             X
C                   ENDDO
C* MULT EVEN BY 3
C* ADD ODD
C* CHK DIGIT = NUMBER TO ADD TO NEAREST 10.
C     EVEN          MULT      3             TOTAL             5 0
C                   ADD       ODD           TOTAL
C                   Z-ADD     0             @CKD#
C                   DO        9
C                   MOVE      TOTAL         @1                1 0
C     @1            IFEQ      0
C                   LEAVE
C                   ENDIF
C                   ADD       1             TOTAL
C                   ADD       1             @CKD#
C                   ENDDO
C* END PGM
C                   MOVE      @CKD#         @CKD
C                   RETURN

To: "RPG programming on the AS400 / iSeries" <rpg400-l@xxxxxxxxxxxx>
Sent: Wednesday, April 12, 2006 2:39 PM
Subject: Mod 10 check digit calculation

Hi gang,
does anyone have a program/sub-routine/mod etc. to calculate the mod 10
check-digit for a numbers with varying sizes.
I know the procedure for what is required in calculating the answer, but
right now I'm up to my neck with everything else.

It would be MUCH appreciated if someone could post whatever code they have.

Thanks in advance


Alan Shore

NBTY, Inc
(631) 244-2000 ext. 5019
AShore@xxxxxxxx
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