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COMP-3 variables storage bytes display needed

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mfuser
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Joined: 01 Mar 2005
Posts: 105
Topics: 58

Posted: Thu Oct 05, 2006 4:19 pm Post subject: COMP-3 variables storage bytes display needed

Members,

I have two variables declared as :

Code:

01 A PIC 9(05) COMP-3
01 B PIC S9(05) COMP-3.

A variable takes 2 bytes of internal storage and B variable takes 3 bytes of internal storage.Despite of the Rule followed for calculating the bytes occupied for COMP-3 variables can we display / know how many bytes of storage each variable A and B takes that is ouput should be 2 and 3 respectively. Can we know by any means ?

kolusu
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Joined: 26 Nov 2002
Posts: 12370
Topics: 75
Location: San Jose

Posted: Thu Oct 05, 2006 5:03 pm Post subject:

Quote:

A variable takes 2 bytes of internal storage and B variable takes 3 bytes of internal storage.

mfuser,

you are wrong. Both A and B both occupy 3 bytes. How did you come up with 2 bytes for A? Any way here is a way to find the length.

Code:

01 WS-VAR1 PIC 9(06) COMP-3.
01 WS-VAR2 PIC S9(06) COMP-3.

PROCEDURE DIVISION.

DISPLAY LENGTH OF WS-VAR1
DISPLAY LENGTH OF WS-VAR2

Hope this helps...

Cheers

Kolusu
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Kolusu
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mfuser
Banned

Joined: 01 Mar 2005
Posts: 105
Topics: 58

Posted: Fri Oct 06, 2006 1:22 am Post subject:

Kolusu,

Thanks for your help.

Code:

01 A PIC 9(05) COMP-3

A takes 3 bytes because 5/2 = 2.5 so take out fraction part and add 1 so it becomes 3.
Some practise examples:

Code:

01 A PIC 9(05) COMP-3.
01 B PIC S9(05) COMP-3.
01 C PIC 9(05)V99 COMP-3.
01 D PIC S9(05)V99 COMP-3.
01 WS-VAR1 PIC 9(06) COMP-3.
01 WS-VAR2 PIC S9(06) COMP-3.

Code:

3
3
4
4
4
4

Please let me know how the bytes storages are respectively as given in the output so that i will be clear in understanding.

kolusu
Site Admin

Joined: 26 Nov 2002
Posts: 12370
Topics: 75
Location: San Jose

Posted: Fri Oct 06, 2006 5:08 am Post subject:

Quote:

A takes 3 bytes because 5/2 = 2.5 so take out fraction part and add 1 so it becomes 3.

mfuser,

Now re-read your first post and about the no: of bytes for A.

Quote:

Please let me know how the bytes storages are respectively as given in the output so that i will be clear in understanding.

huh ? Not a clue as to what you are talking. if you are talking about how Comp-3 items are stored then read this

http://www.mvsforums.com/helpboards/viewtopic.php?p=34067#34067

Kolusu
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Kolusu
www.linkedin.com/in/kolusu

mfuser
Banned

Joined: 01 Mar 2005
Posts: 105
Topics: 58

Posted: Fri Oct 06, 2006 7:31 am Post subject:

Kolusu,

Thanks for your help.I am interested in knowing how is the storage bytes

Code:

3 A
3 B
4 C
4 D
4 WS-VAR1
4 WS-VAR2

respectively for variables.
I had displayed for variable A i want to know about other variables also.Please let me know about that and also if A is correct or wrong.

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