RE: $table_model() requirements

Patrick,
 
As to which of the two styles to pick I can't say,
because I am not all that informed on the "design"
of the language itself and I don't want to propose
something that goes against the grains of those 
who do.  My personal opinion would be to add this
capability to the existing $table_model keyword,
simply because the file reading (or input syntax)
portion of this capability would be identical to
what $table_model already has.
 
Currently the $table_model takes an argument which
tells it where to find a value in a table.  In order
to get the entire table returned we would only need
to change the definition of this input argument.  We
could say, for example, that if this argument is not
there or has a special value, the function returns
the entire table instead of a single value.  This is
not a big change to what is in $table_model already,
and seems that it would be a lot easier to do than
invent a new set of keywords the way you suggested.
 
On the other hand, I agree, your other suggestion
may provide more flexibility down the road, but for
now this may be a good start.
 
Thanks,
 
Arpad
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________________________________

From: Patrick O'Halloran [mailto:patrick@tiburon-da.com] 
Sent: Monday, May 14, 2007 9:12 AM
To: Muranyi, Arpad; verilog-ams@eda.org
Subject: RE: $table_model() requirements



Hi Arpad,

 

I was thinking if we had:

 

Table tbl = $build_table(..); 

 

Then you might have functions like,

 

y = $interp(tbl,...) // interpolate the table

arr = $table_to_array(tbl, lookup_vars);   // convert (possibly a cross section) of a table to an array

 

Or, we could continue to add functionality into the existing function. That is, for a table of dimension n, and m lookup args, then return an array of dimension n-m. I'm more in favor of having a table object and a set of support functions - build it, interp it, translate it, etc. That keeps the common  use of interpolation usable.

 

Regards,

Patrick  

 

From: owner-verilog-ams@eda.org [mailto:owner-verilog-ams@eda.org] On Behalf Of Muranyi, Arpad
Sent: Monday, May 14, 2007 8:57 AM
To: verilog-ams@eda.org
Subject: RE: $table_model() requirements

 

Having said that, I remember there was a time when

I really wished that the $table_model had a feature

to return the vector(s) as is in the tables of the

file without any interpolation, or any massaging.

Basically work as if it was a file to array function.

Could this feature be considered for it?

 

Thanks,

 

Arpad

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