Subject: Fwd: RE: unsigned -- why a V2K keyword?
From: Karen Pieper (Karen.Pieper@synopsys.com)
Date: Tue Oct 08 2002 - 09:16:58 PDT
Since unsigned is a reserved word for Verilog 2001 because it is the
opposite of signed, there is a
good argument for making static reserved as well......
:-)
K
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>Date: Mon, 7 Oct 2002 17:05:05 -0700 (PDT)
>From: "James A. Markevitch" <jam@magic.com>
>To: Brad.Pierce@synopsys.COM
>Subject: RE: unsigned -- why a V2K keyword?
>Cc: etf@boyd.com
>Sender: owner-etf@boyd.com
>
>Precedence: bulk
>
>This question was asked at some point during the 2001 process and I recall
>the same thing as Steven: it was because "signed" was a keyword.
>
>"unsigned" is more special than "enum", etc. because it is the antonym
>of "signed". One can still argue whether is should be reserved or not,
>but it's official for the 2001 standard.
>
>Note the uglier (in my opinion) concept that the configuration spec words
>are reserved in the syntax, even though they don't occur in the Verilog
>language itself, just the config files. This was also discussed during
>the 2001 process.
>
>Hopefully, vendors will make provisions to allow these various keywords
>to be used, but issue warnings when they appear in Verilog code.
>
>James Markevitch
>
>
> > If so, then 'unsigned' would be receiving uniquely special treatment. Why
> > not 'enum', 'typedef', etc.?
> >
> > Also, according to 2.7.3, keywords "are predefined nonescaped identifiers
> > that are used to define the language constructs", but this is not true of
> > 'unsigned'.
> >
> > -- Brad
> >
> > -----Original Message-----
> > From: owner-etf@boyd.com [mailto:owner-etf@boyd.com]On Behalf Of Steven
> > Sharp
> > Sent: Monday, October 07, 2002 12:22 PM
> > To: Brad.Pierce@synopsys.COM; etf@boyd.com;
> > Gordon.Vreugdenhil@synopsys.COM
> > Subject: Re: unsigned -- why a V2K keyword?
> >
> >
> > Precedence: bulk
> >
> > There may have been a desire to reserve unsigned in case it was needed in
> > the future.
> >
> > Steven Sharp
> > sharp@cadence.com
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