Re: If boolean vs. If not boolean

Hi Alan,

I appreciate "I think" but I was looking for more of a definitive answer.

Perhaps the "if not" is just a different instruction as "if" by itself.

Is this similar to asking: does "if a = b" take the same number of instructions as "if a <> b"?

Just wondering.

Thanks,

Glenn

-----Original Message-----
From: Alan Campin <alan0307d@xxxxxxxxx>
Sender: rpg400-l-bounces@xxxxxxxxxxxx
Date: Fri, 4 Oct 2013 16:38:02
To: RPG programming on the IBM i (AS/400 and iSeries)<rpg400-l@xxxxxxxxxxxx>
Reply-To: "RPG programming on the IBM i \(AS/400 and iSeries\)" <rpg400-l@xxxxxxxxxxxx>
Subject: Re: If boolean vs. If not boolean

If you mean machine instructions, the second would generate more to reverse
the value of logical true or false I would think.

Why would it matter? A couple of nanoseconds.




On Fri, Oct 4, 2013 at 3:25 PM, Glenn Gundermann <ggundermann@xxxxxx> wrote:

Hi gurus,

Forgive the trivialness of this question but I am wondering if you smart
folks can answer this.

Compare these two statements:

If booleanVar;
If not booleanVar;

Do both of these take the exact same number of internal instructions for
the test or does the second statement take an extra step?

Thanks.

Glenn Gundermann


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