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Re: [Gnucap-devel] Fwd: [Help-gnucap] inline comment delimiter

From: asomers
Subject: Re: [Gnucap-devel] Fwd: [Help-gnucap] inline comment delimiter
Date: Tue, 15 Sep 2009 20:11:14 -0700

It looks like the spice language plugin section of the development
version's manual is yet to be written.  Is there any place I can go
for more info on that?

On Tue, Sep 15, 2009 at 6:00 PM, al davis <address@hidden> wrote:
> On Tuesday 15 September 2009, address@hidden wrote:
>> Here's a thread that started out on gnucap-help:
>> What is the inline comment delimiter in gnucap,
> It depends on the language plugin, but mostly it doesn't work.
> Let's fix it now.
> Gnucap accepts several different simulation languages.  What is
> the comment delimiter should depend on what language you are
> using.
>> and what
>>  should it be?
> With the language plugins, it is possible to have exact
> compatibility with most other simulators, even the different
> incompatible versions of Spice.
> As it stands, compatibility isn't perfect, but Hspice and Eldo
> have been treated as the "spice" versions for which the highest
> compatibility is desired.
>> According to the manual for V0.35, the delimiter is quote.
>>  It doesn't say whether that is single quote or double quote.
> That's unclear. .. The manual is being rewritten completely.
> The new version is on the wiki at:
>> From experiment, it seems that ' starts a comment on my
>> lines, but " starts a comment on a .SUBCKT line.
> Several characters are accepted to start whole-line comments,
> going back a long time when different versions of spice used
> different characters.  Since there was no standard, accept all
> of them.
> I think it has converged to "*".  Correct me if I am wrong.
> It is easy to change it to just about anything.  So, since the
> example is Spice format ..  What do the different versions of
> Spice do?
> (Hspice, Pspice, NGspice, LTspice, Eldo, Multi-sim, Smart-spice,
> .....)
> There is another issue now ...  You can have parameter
> expressions.  It looks like Hspice and Eldo want them in single
> quotes.  Pspice appears to want curly braces.  What else is
> there?
> Another comment issue is how comments mix with extension lines.
> It seems to be different in different simulators.
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