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Dhrubojoty mukherjee
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Joined: 23 Mar 2010
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Location: kolkata
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| Is it possible to compare between a numeric (9(8)) and packed decimal(s9(9) comp-3) field in cobol with out any type casting? |
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Bill Woodger
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| What do you mean by "type casting"? Give some specific examples. |
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Dhrubojoty mukherjee
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Location: kolkata
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| Type casting means from numeric to char/alpha numeric or the vice versa.. |
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Bill O'Boyle
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You can compare the two. However, keep in mind that if the COMP-3 field exceeds 99999999 (max value of the 8-byte display-numeric field), your compare may not work as expected.
The compiler will "PACK" the 8-byte display-numeric field into a COMP-3 work-field and a "Compare Decimal/Pack" (CP) instruction will be issued.
This is basic knowledge for any s.e.  |
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Dhrubojoty mukherjee
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| Thanks... |
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Bill Woodger
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| Dhrubojoty mukherjee wrote: |
| Type casting means from numeric to char/alpha numeric or the vice versa.. |
Well if that's what it means (to you) then the question is moot in this case, is there is no "char/alpha numeric" involved.
The compare will not be a problem as is. Try it. |
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Robert Sample
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Joined: 06 Jun 2008
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Location: Dubuque, Iowa, USA
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If you have not yet found it, the Enterprise COBOL Language Reference manual at publibfp.boulder.ibm.com/epubs/pdf/igy5lr11.pdf has a table of valid and invalid elementary variable moves (on pages 373 - 374 of the version 5.1 manual) under the MOVE statement discussion. This table tells you which moves are allowed in COBOL and should be consulted first -- if you had done so, you would have had your answer much earlier than through posting on this forum.
Also, COBOL does not use "type casting" as such -- the table of valid moves indicates any conversions that will be done. |
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