[sv-ac] RE: My notes regarding 2578

Hi Dmitry, Ed:

My thought is that iff is probably okay.

I think that in an ideal world the vacuity of not(p1) or p2 would match that of p1 implies p2. Based on the previous discussions I don't believe we know of a consistent set of definitions where that relationship holds. I favor fixing the implies vacuity definition which I believe is badly broken. There are other warts in the definitions that will remain for the time being. When someone comes up with a consistent set of definitions that work consistently for all cases this section can then be overhauled.

Thanks,
Scott

From: owner-sv-ac@eda.org [mailto:owner-sv-ac@eda.org] On Behalf Of Eduard Cerny
Sent: Tuesday, August 02, 2011 12:40 PM
To: Korchemny, Dmitry; 'ben@systemverilog.us'
Cc: sv-ac@eda-stds.org
Subject: [sv-ac] RE: My notes regarding 2578

There is one more question: is there a need that vacuity of
not(p1) or p2
matches that of
p1 implies p2
?
thanks
ed

From: owner-sv-ac@eda.org [mailto:owner-sv-ac@eda.org] On Behalf Of Korchemny, Dmitry
Sent: Tuesday, August 02, 2011 1:37 PM
To: 'ben@systemverilog.us'
Cc: sv-ac@eda-stds.org
Subject: [sv-ac] My notes regarding 2578

Hi Ben,

I had the following question: should we modify the vacuity definition of iff? Probably we can leave it as is.

Thanks,
Dmitry
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