RE: IEEE - Latest Constraints revisions

From: Hannes Froehlich <hannes@cadence.com>
Date: Mon Jul 21 2014 - 14:31:57 PDT
Yup, that reflects the semantics and should be alright grammatically (although being German, I'm not the expert here...)

From: Andrew Piziali [mailto:andy@piziali.dv.org]
Sent: 21 July 2014 19:09
To: Hannes Froehlich
Cc: ieee1647@eda.org
Subject: Re: IEEE - Latest Constraints revisions

Hannes, you wrote:
Andy, you wrote

In section 10.2.10, "Generatable paths and the sampling of inputs," on PDF page 10 the paragraph:
An otherwise generatable path can be defined as input to a constraint using the read_only() syntax, e.g., keep x<read_only(y).  In this case, the set of values y can take is unaffected by the constraints on x.  The parameter y is treated as an input.
would be grammatically correct if written as:
A non-generatable path can be transformed into a generatable path if it is defined as an input to a constraint using the read_only() syntax, e.g., keep x < read_only(y).  In this case, the set of values y can take is unaffected by the constraints on x. The parameter y is treated as an input.

I'd like to point out that one cannot make a non-generatable path generatable. Impossible.

However, what one can do is to make a generatable path non-generatable, using read_only(<>). This is what this paragraph tried to capture.

Aha.  Then, perhaps the following rendering would be both grammatically and functionally correct:
A path that is generatable but is not intended to be generated may be modified by defining it as an input to a constraint using the read_only() syntax, as in keep x < read_only(y).  In this case, the set of values that y can assume is unaffected by the constraints on x.  The parameter y is treated as an input.
How about that Hannes?

--


    Andy@Piziali.dv.org<mailto:andy@piziali.dv.org>

[cid:image001.png@01CFA533.94F2D0D0]

    PGP Key ID: 6F66CA9F<http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x6F66CA9F>




"To believe in your own thought, to believe that what is true for you in

your private heart is true for all men--that is genius." -- Ralph

Waldo Emerson

-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.



image001.png
Received on Mon Jul 21 14:32:43 2014

This archive was generated by hypermail 2.1.8 : Mon Jul 21 2014 - 14:32:47 PDT