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kalpana
New User
Joined: 19 Nov 2004
Posts: 25
Location: Banglore
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COuld any please suggest me code for converting character field to packed field
can i use PACK command |
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References
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 Posted: Thu Jul 03, 2008 1:55 pm Post subject: Re: Convert Character field to Packed field |
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Garry Carroll
Active User
Joined: 08 May 2006
Posts: 134
Location: Dublin, Ireland
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Depends on which language you're using.
For Assembler, use the PACK instruction. For PL/1 have a PIC declare of your CHAR field and assign the PIC to the DECIMAL FIXED field.
e.g.
| Code: |
DCL CHAR_FIELD CHAR(5);
DCL PIC_FIELD PIC'(5)9' BASED(ADDR(CHAR_FIELD));
DCL DEC_FIELD DEC FIXED(5);
CHAR_FIELD = '12345';
DEC_FIELD = PIC_FIELD;
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Regards,
Garry |
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kalpana
New User
Joined: 19 Nov 2004
Posts: 25
Location: Banglore
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Iam using Assembler..
I want code for the conversion |
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Garry Carroll
Active User
Joined: 08 May 2006
Posts: 134
Location: Dublin, Ireland
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Both operands have length fields
| Code: |
PACK DOUBLE,0(4,R8)
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DOUBLE DS D
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will pack a 4-character field at R8 into the doubelword field named DOUBLE.
This could also be coded as
| Code: |
PACK 0(8,DOUBLE),0(4,R8) |
Regards,
Garry. |
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kalpana
New User
Joined: 19 Nov 2004
Posts: 25
Location: Banglore
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Actually my requirement F_nomval is a character filed of 16 bytes
i have stored value 4.000000 thru screen
i declard F_nv_pack as double word
PACK F_nv_pack,f_nomval
i checked the value of f_nv_pack by putting delibrate dump
but iam getting value 0 in the F_nv_pack field
could any one help me with query???
Many thanks in advance
Kalpana |
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enrico-sorichetti
Global Moderator
Joined: 14 Mar 2007
Posts: 2676
Location: italy
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there is very little that we can do from here
PACK/unpack are two of the most simple and most dumb instructions ...
review its description in the manual
- they will take anything as input an build the output according to the specifications
- they will never program check for data exception
- they are GIGO ( garbage in garbage out ) instruction |
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murugan_mf
New User
Joined: 31 Jan 2008
Posts: 30
Location: Chennai, India
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| Code: |
DCL CHAR_FIELD CHAR(5);
DCL PIC_FIELD PIC'(5)9' BASED(ADDR(CHAR_FIELD));
DCL DEC_FIELD DEC FIXED(5);
CHAR_FIELD = '12345';
DEC_FIELD = PIC_FIELD; |
What is the need of using based?
can't we directly assign |
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Craq Giegerich
Senior Member
Joined: 19 May 2007
Posts: 985
Location: Virginia, USA
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| kalpana wrote: |
Actually my requirement F_nomval is a character filed of 16 bytes
i have stored value 4.000000 thru screen
i declard F_nv_pack as double word
PACK F_nv_pack,f_nomval
i checked the value of f_nv_pack by putting delibrate dump
but iam getting value 0 in the F_nv_pack field
could any one help me with query???
Many thanks in advance
Kalpana |
4.000000 is not 16 bytes and it can not be packed since it is not numeric. In assembler the programmer has to keep track of where the decimal point is suppose to be. |
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Garry Carroll
Active User
Joined: 08 May 2006
Posts: 134
Location: Dublin, Ireland
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Hi Murugan,
| Quote: |
| What is the need of using based? |
This is for PL/1 only. "BASED" is used to overlay the CHAR field with a PIC field. You could also use DEFINED to achieve the same result, but DEFINE is, IMHO, less flexible.
| Quote: |
| can't we directly assign |
No, You can't assign a CHAR field directly into a DECIMAL FIXED field.
Regards,
Garry. |
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