Re: IEEE - Latest Constraints revisions

From: Andrew Piziali <andy@piziali.dv.org>
Date: Mon Jul 21 2014 - 11:09:11 PDT
Hannes, you wrote:
> Andy, youwrote
>
>
> 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 itas 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?


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    Andy@Piziali.dv.org <mailto:andy@piziali.dv.org> 	
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Received on Mon Jul 21 11:10:06 2014

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