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halo_shankha
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Joined: 07 Nov 2007
Posts: 1
Location: KOLKATA
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Hi, can anyone tell what should be the supposed result if you move spaces into a numeric field.
I tried that and got zeroes in the numeric field. |
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dbzTHEdinosauer
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Joined: 20 Oct 2006
Posts: 6966
Location: porcelain throne
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| what does your datalayout look like? let us see your code. |
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abhishekmdwivedi
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Joined: 22 Aug 2006
Posts: 95
Location: india
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| Quote: |
| I tried that and got zeroes in the numeric field. |
Are you expecting anything else. Obviously the value will be zero. |
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Bill O'Boyle
CICS Moderator
Joined: 14 Jan 2008
Posts: 2501
Location: Atlanta, Georgia, USA
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Use reference modification. The compiler will then treat your display-numeric field as alphanumeric. The field length is not necessary.
| Code: |
03 WS-NUMERIC PIC 9(02).
MOVE SPACES TO WS-NUMERIC (1:).
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Regards,
Bill |
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Phrzby Phil
Senior Member
Joined: 31 Oct 2006
Posts: 1042
Location: Richmond, Virginia
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| There is always that obscure and rarely used feature REDEFINE. |
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mmwife
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Joined: 30 May 2003
Posts: 1592
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Just don't put your name to it. They may send a search and destroy team after you.  |
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Woe
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Joined: 03 Sep 2007
Posts: 2
Location: UK
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You will indeed get zeros.
As far as I understand it, on an IBM mainframe, using EBCDIC characters - the cobol compiler only moves the last 4 bits of a character when moving to a numeric field.
Imagine you wanted to move "1985" to a PIC 9(4) field.
"1985" is x"F1F9F8F5" - so COBOL ignores the first half of the byte ("F") and moves the second half.
What you are seeing is a result of <space> being x"40" (so drop the "4" and keep the "0").
Try it with "JZHE" (hex "D1E9C8C5")... you should still see 1985 in the numeric field (not tried this in about 15 years, so COBOL *may* trap it with a S0C7 now). |
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sri_mf
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Joined: 31 Aug 2006
Posts: 218
Location: India
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| Bill O'Boyle wrote: |
Use reference modification. The compiler will then treat your display-numeric field as alphanumeric. The field length is not necessary.
| Code: |
03 WS-NUMERIC PIC 9(02).
MOVE SPACES TO WS-NUMERIC (1:).
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Regards,
Bill
Bill,
| Code: |
01 WS-VAR1 PIC 9(02) VALUE 99.
MOVE 'BB' TO WS-VAR1(1:). |
For this code BB is moved to var1.Really amazing concept.
I did not heard abt this yet.
Can u expalin how this is considered and processed internally. |
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dr_te_z
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Joined: 08 Jun 2007
Posts: 71
Location: Zoetermeer, the Netherlands
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| mmwife wrote: |
| Just don't put your name to it. They may send a search and destroy team after you. |
That's right! I volunteer for that posse! |
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dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix
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Hello,
| Quote: |
| Can u expalin how this is considered and processed internally |
It is treated as a character move. And do not do this just because the compiler will allow it.
| Quote: |
| That's right! I volunteer for that posse! |
Me too. . . That posse should be allowed (or even encouraged) to inflict bodily harm on the perpetrator(s) 
Yet another "thing" that can be done, but should not be permitted. And is not permitted most places and will be rejected during code review. |
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Bill O'Boyle
CICS Moderator
Joined: 14 Jan 2008
Posts: 2501
Location: Atlanta, Georgia, USA
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Dick said
| Quote: |
| Yet another "thing" that can be done, but should not be permitted. And is not permitted most places and will be rejected during code review. |
Wow Dick, you actually work for a place that does code review? I've been pushing this where I'm at, but I get continually shot down. Too many "hissy" fits to deal with.  But, I'm over it.
Yes and as far as another thing that "can" be done, I would compare that with an "excercise" which "can" be done by male dogs. Why does he do that one would say? That's easy Watson, because he can! 
Regards,
Bill |
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dick scherrer
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Joined: 23 Nov 2006
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Hello,
| Quote: |
| I would compare that with an "excercise" which "can" be done by male dogs. |
Sexist. . . .
| Quote: |
| Wow Dick, you actually work for a place that does code review? |
I've been a migrant data worker (freelance sysadmin/database admin contractor) for a long, long time and many of "my sites" do code review - some also do not - especially with the rise in cross-platform processes. . . |
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sri_mf
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Joined: 31 Aug 2006
Posts: 218
Location: India
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| Thanks Dick.. |
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dick scherrer
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You're welcome
d |
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Aaru
Senior Member
Joined: 03 Jul 2007
Posts: 1287
Location: Chennai, India
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Hi,
| Quote: |
Hi, can anyone tell what should be the supposed result if you move spaces into a numeric field.
I tried that and got zeroes in the numeric field. |
Techies,
I have a doubt here. As per all your explanations we would have zeroes if we move SPACES to numeric field. But consider this scenario,
01 Group Variable
05 Elementary item 1 PIC 9(1)
05 Elementary item 2 PIC 9(1)
05 Elementary item 3 PIC 9(1)
As far as i know, group variables are always alphanumeric and hence if you initialize this Group variable we would have spaces in the 3 elementary items and not zeroes.
So is there any way to move zeroes to these elementary items other than moving zeroes to this gp variable? |
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Craq Giegerich
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Joined: 19 May 2007
Posts: 1512
Location: Virginia, USA
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| INITIALIZE does it at the elementary item level! Please read the COBOL Language Reference. |
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dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix
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Hello,
| Quote: |
| So is there any way to move zeroes to these elementary items other than moving zeroes to this gp variable |
I believe INITIALIZE Group Variable will do what you want. I'm not connected so i've not tested this. |
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Anuj Dhawan
Superior Member
Joined: 22 Apr 2006
Posts: 6250
Location: Mumbai, India
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Hi,
Yes, INITIALIZE 'Group Variable' will 'MOVE' zeros to all the elementry levels. |
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Aaru
Senior Member
Joined: 03 Jul 2007
Posts: 1287
Location: Chennai, India
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Craq,
| Quote: |
| INITIALIZE does it at the elementary item level! Please read the COBOL Language Reference |
Even i had the similar beleif that INITIALIZE does it at the elementary item level. But today i tested a piece of code which behaved differently.
The Scenario is we had a group variable in a copybook with 40 elementary items PIC 9(1). We had initalized the copybook and i was under an assumption that all the elementary items would be initialized to zeroes. But to my surprise that didn't happen !
Those elementary items had spaces instead of zeroes. That made me post this question in this forum.
For time being we have fixed the issue by moving zeroes to the group variable. |
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Anuj Dhawan
Superior Member
Joined: 22 Apr 2006
Posts: 6250
Location: Mumbai, India
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Hi,
| Quote: |
| we had a group variable in a copybook with 40 elementary items PIC 9(1). |
Does that copybook has same 'definition' of varaibles as shown by You in Your previous post or it differes? Show some contents of copybooks, might help better. |
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Craq Giegerich
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Joined: 19 May 2007
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Location: Virginia, USA
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| Initialize uses the first definition of an item if the the item is redefined. |
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Aaru
Senior Member
Joined: 03 Jul 2007
Posts: 1287
Location: Chennai, India
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Craq,
Interesting, Will have to check whether my group variable is redefined and whether the first defnition is alphanumeric.
Anuj,
The definition in my first post is just an example and not actually how my copybook looks. |
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Anuj Dhawan
Superior Member
Joined: 22 Apr 2006
Posts: 6250
Location: Mumbai, India
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Hi,
Yes
| Quote: |
| Initialize uses the first definition of an item if the the item is redefined. |
once a memory is "masked" with some definition, we can 'resue' it with that definition only. You re-define the variables not the memory. |
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dr_te_z
New User
Joined: 08 Jun 2007
Posts: 71
Location: Zoetermeer, the Netherlands
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INITIALIZE ignores FILLER's. So to be sure I code both:
| Code: |
MOVE SPACE TO FOO-GR
INITIALIZE FOO-GR REPLACING NUMERIC DATA BY ZERO
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sri_mf
Active User
Joined: 31 Aug 2006
Posts: 218
Location: India
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| Aaru wrote: |
Hi,
| Quote: |
Hi, can anyone tell what should be the supposed result if you move spaces into a numeric field.
I tried that and got zeroes in the numeric field. |
Techies,
I have a doubt here. As per all your explanations we would have zeroes if we move SPACES to numeric field. But consider this scenario,
01 Group Variable
05 Elementary item 1 PIC 9(1)
05 Elementary item 2 PIC 9(1)
05 Elementary item 3 PIC 9(1)
As far as i know, group variables are always alphanumeric and hence if you initialize this Group variable we would have spaces in the 3 elementary items and not zeroes.
So is there any way to move zeroes to these elementary items other than moving zeroes to this gp variable? |
| Code: |
Aaru i tried this and i think it may help u.
01 WS-VARIABLE.
05 WS-ITEM1 PIC 9(1).
05 WS-ITEM2 PIC 9(1).
05 WS-ITEM3 PIC 9(1).
INITIALIZE WS-VARIABLE.
DISPLAY 'WS-VARIABLE :' WS-VARIABLE.
DISPLAY 'WS-ITEM1 :' WS-ITEM1.
DISPLAY 'WS-ITEM2 :' WS-ITEM2.
DISPLAY 'WS-ITEM3 :' WS-ITEM3.
Here is the SYSOUT i got.
WS-VARIABLE :000
WS-ITEM1 :0
WS-ITEM2 :0
WS-ITEM3 :0
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