RE: [sv-bc] function task calling

Although today there may be no system tasks which delay, there could be
in the future. 

Note that we already have one system task, $cast, which when called as a
function, is not of type void. We also decided that $system would work
that way. And in 1364-2001, $sformat was described that way also.

Shalom 

> -----Original Message-----
> From: owner-sv-bc@server.eda.org 
> [mailto:owner-sv-bc@server.eda.org] On Behalf Of Rich, Dave
> Sent: Sunday, September 09, 2007 6:52 AM
> To: Steven Sharp; sv-bc@server.eda-stds.org; Brad.Pierce@synopsys.com
> Subject: RE: [sv-bc] function task calling
> 
> I think renaming system tasks to system functions is 
> something that will have to eventually happen as a result of 
> the merge. Any method that guarantees it will not consume 
> time should be defined as a function, void or otherwise. In 
> the end it will be a lot clearer that way.
> 
> But there are 368 occurrences of 'system task' in the LRM. I 
> think it should wait for the next draft, unless someone has 
> the energy to take this on in the next two months.
> 
> Dave
> 
> 
> > -----Original Message-----
> > From: owner-sv-bc@server.eda.org [mailto:owner-sv-bc@server.eda.org]
> On
> > Behalf Of Steven Sharp
> > Sent: Saturday, September 08, 2007 8:25 PM
> > To: sv-bc@server.eda-stds.org; Brad.Pierce@synopsys.com
> > Subject: RE: [sv-bc] function task calling
> > 
> > 
> > >Could we add text saying that a system task is a void system
> function?
> > 
> > It doesn't sound like you are suggesting that we replace 
> "system task"
> > with "void system function" everywhere, which would be 
> daunting.  It 
> > sounds like you are suggesting a single statement saying 
> that system 
> > tasks can be regarded as void system functions.
> > 
> > If this only affects the legality of calling them from 
> functions, then 
> > you would presumably want the statement to appear in the 
> section that 
> > says what is legal in a function.  Something like "System tasks are 
> > treated as if they are void system functions for this purpose."
> > 
> > That seems to me like a roundabout way of saying what you 
> mean, which 
> > is "System tasks can be called from functions."
> > 
> > It sounds like you want the text to provide the rationale 
> for the rule 
> > in addition to the rule itself.  I don't have a problem 
> with that, as 
> > it makes the rules easier to understand and extrapolate from.  But I
> am
> > concerned that saying "system tasks are actually void system
> functions"
> > will lead readers to believe that this means something more than 
> > "system tasks can be called from functions".  This could 
> confuse them.
> > 
> > Steven Sharp
> > sharp@cadence.com
> > 
> > 
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