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May 2004, Week 1

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Subject:
Re: COBOL question
From:
"Emerson, Tom" <[log in to unmask]>
Reply To:
Emerson, Tom
Date:
Wed, 5 May 2004 17:22:25 -0700
Content-Type:
text/plain
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text/plain (31 lines) 
> From: Bill Cadier
> 
> Ray asks an interesting technical question:
> 
> > Given the following WS:
> >       88  TEST-RANGE               VALUE "B" THRU "Y".
> >
> > Does the compiler [...] (generate code to test each possible value)
> 
[previously, I replied with:]

> This is a big of a SWAG, but I'd imagine that since you've 
> specified a "thru" condition/range, the compiler might only 
> test the endpoints, as in
> 
>   IF (testvar >= "B") AND (testvar <= "Y")

and Bill confirms:

> COBOL is only checking the boundary values of an 88 item 
> using "thru" and not checking
> each value in the range. To determine this I added
> 
> CALL INTRINSIC "DEBUG".
> IF NOT TEST-RANGE ...

So, my "guess" was rather accurate after all...

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