RE: [sv-ec] Randomizing size of associative arrays

There was a long email thread on this starting at
http://www.eda-stds.org/sv-ec/hm/3293.html , started by a guy named Ray
Ryan.

Shalom
 

> -----Original Message-----
> From: owner-sv-ec@server.eda.org 
> [mailto:owner-sv-ec@server.eda.org] On Behalf Of Ryan, Ray
> Sent: Thursday, October 11, 2007 10:12 PM
> To: Michael Burns; sv-ec@server.eda.org
> Subject: RE: [sv-ec] Randomizing size of associative arrays
> 
> 
> In section 17.4 (Random Variable), there are two consecutive bullets.
>  - Dynamic and associative arrays can be declared rand or 
> randc. All of the elements in the array are randomized, 
> overwriting any previous data.
> 
>  - The size of a dynamic array declared as rand or randc can 
> also be constrained. ...
> 
> This explicitly allows associative arrays to be declared as 
> random variable. The second bullet only allows size 
> constraints on dynamic array. As consecutive points, it seems 
> clear that constraining the size of an associative array is 
> not allowed.
> I believe there was some earlier discussion on this and that 
> the ommission of associative arrays was intentional.
> 
> - Ray
> 
> > -----Original Message-----
> > From: owner-sv-ec@server.eda.org
> > [mailto:owner-sv-ec@server.eda.org] On Behalf Of Michael Burns
> > Sent: Wednesday, October 10, 2007 6:35 PM
> > To: sv-ec@server.eda.org
> > Subject: [sv-ec] Randomizing size of associative arrays
> > 
> > 
> > Hi folks,
> > 
> > Is it intended to be able to constrain and randomize the size of an 
> > associative array? Draft 4 sec. 17.4 p385 paragraph 3 talks about 
> > constraining the size of a dynamic array, but not an associative 
> > array. In the absence of any other language, one would naturally 
> > assume that the intention was not to allow constraining the 
> size of an 
> > associative array. However, section 17.5.7 p.393 paragraph 
> 6 uses very 
> > similar language, but does include associative arrays. If 
> the intent 
> > is to allow randomizing the size of an associative array, 
> I'd like to 
> > hear how it was supposed to work - I'm having trouble imagining 
> > anything useful, particularly for non-integral index types. On the 
> > other hand, it would certainly be useful for associative array 
> > randomization to preserve existing size and indices, and only 
> > randomize the values.
> > 
> > If there's a mantis on this already, I'd like to address it in this 
> > round. If not, I'd like to know so I can submit one.
> > 
> > Thanks,
> > Mike
> > 
> > 
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> 
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