RE: [sv-bc] Sign of a signed packed array of struct

But that is what the LRM says.

You can argue with whether it should be that way, but that is what is says now.

Shalom

> -----Original Message-----
> From: Paul Graham [mailto:pgraham@oasys-ds.com]
> Sent: Saturday, October 16, 2010 1:25 AM
> To: Bresticker, Shalom
> Cc: sv-bc
> Subject: Re: [sv-bc] Sign of a signed packed array of struct
>
> Shalom,
>
> I find it ambiguous whether this "packed array is declared as signed":
>
> struct packed signed { ... } [3:0] S;
>
> It *looks* like the packed struct is declared as signed, but then I see
> the little range tucked in at the end of the declaration. Does this
> mean that the array is declared as signed and the struct is *not*
> declared as signed? Just because the struct is unnamed does not mean
> that the signed keyword should not apply to it.
>
> Paul
> ----- Original Message -----
> From: "Shalom Bresticker" <shalom.bresticker@intel.com>
> To: "Paul Graham" <pgraham@oasys-ds.com>, "sv-bc" <sv-bc@eda.org>
> Sent: Friday, October 15, 2010 8:14:32 AM
> Subject: RE: [sv-bc] Sign of a signed packed array of struct
>
> 7.4.1 says,
>
> "If a packed array is declared as signed, then the array viewed as a
> single vector shall be signed. The individual elements of the array are
> unsigned unless they are of a named type declared as signed. A part-
> select of a packed array shall be unsigned."
>
> So I would assume S to be signed and S[0] as unsigned.
>
> Shalom
>
> > -----Original Message-----
> > From: owner-sv-bc@eda.org [mailto:owner-sv-bc@eda.org] On Behalf Of
> > Paul Graham
> > Sent: Saturday, September 11, 2010 12:11 AM
> > To: sv-bc
> > Subject: [sv-bc] Sign of a signed packed array of struct
> >
> > Given this array-of-struct declaration:
> >
> > struct packed signed { ... } [3:0] S;
> >
> > I can't tell if the signed keyword applies to the struct or to the
> > array as a whole. Is S signed? Is S[0] signed?
> >
> > Paul
>
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