[9fans] COND LIST on vlong

[9fans] COND LIST on vlong

[David Tolpin]

Hi,

COND LIST and COMMA are not supported by C compiler for vlong. 
Is it a feature or an omission?

Re: [9fans] COND LIST on vlong

[David Presotto]

> 
> COND LIST and COMMA are not supported by C compiler for vlong. 
> Is it a feature or an omission?

Its clearly an omission and I know that ken intended it.  Is that
what you're asking?

Re: [9fans] COND LIST on vlong

[David Tolpin]

> Its clearly an omission and I know that ken intended it.  Is that
> what you're asking?
>

graphviz has a package tools/sfio which is of not much use under
plan9 (and not used by basic graphviz tools), but which macros
rely heavily on COMMA. 

If not supporting COMMA is phisolophy, I will be trying to rewrite
those macros to compile, but there are really a lot things to change.

If it is an omission, I can leave sfio out of the port and write
a comment about it in hope it will be implemented sometimes in
the future.

David

Re: [9fans] COND LIST on vlong

[David Presotto]

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I'm assuming that by COMMA you mean expressions separated by
COMMAs?  If so, that is supported.  I thought you meant vlong
comma separated expressions or is that really what you mean?

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From: David Tolpin <dvd@davidashen.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] COND LIST on vlong
Date: Fri, 5 Mar 2004 17:45:05 +0400 (AMT)
Message-ID: <200403051345.i25Dj5CJ009753@adat.davidashen.net>

> Its clearly an omission and I know that ken intended it.  Is that
> what you're asking?
>

graphviz has a package tools/sfio which is of not much use under
plan9 (and not used by basic graphviz tools), but which macros
rely heavily on COMMA. 

If not supporting COMMA is phisolophy, I will be trying to rewrite
those macros to compile, but there are really a lot things to change.

If it is an omission, I can leave sfio out of the port and write
a comment about it in hope it will be implemented sometimes in
the future.

David

Re: [9fans] COND LIST on vlong

[David Tolpin]

> I'm assuming that by COMMA you mean expressions separated by
> COMMAs?  If so, that is supported.  I thought you meant vlong
> comma separated expressions or is that really what you mean?

cpu% cat testv.c
#include <u.h>

vlong foo() {
  vlong x=1;
  vlong y=2;
  vlong z;
  
  z=x,y;
  
  return z;
}

cpu% 8c -c testv.c
testv.c:8 unknown vlong COMMA

Re: [9fans] COND LIST on vlong

[David Presotto]

right, no vlong COMMA.  Your previous message confused me, it said
that COMMA was not supported which it is in general.

If and when brucee does his thing and we have new vlong support,
it will work.  Right now, vlong is a very strangely supported type.

Re: [9fans] COND LIST on vlong

[dbailey27]

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Dave said:
> If and when brucee does his thing and we have new vlong support,
> it will work.  Right now, vlong is a very strangely supported type.

What is entailed in (fixing?) vlong support?

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From: David Presotto <presotto@closedmind.org>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] COND LIST on vlong
Date: Fri, 5 Mar 2004 08:58:03 -0500
Message-ID: <4c1c0d3934feb2e46663047bdc455f2b@plan9.bell-labs.com>

right, no vlong COMMA.  Your previous message confused me, it said
that COMMA was not supported which it is in general.

If and when brucee does his thing and we have new vlong support,
it will work.  Right now, vlong is a very strangely supported type.

Re: [9fans] COND LIST on vlong

[boyd, rounin]

> What is entailed in (fixing?) vlong support?

fixing and a shitload of testing.

Re: [9fans] COND LIST on vlong

[C H Forsyth]

>>What is entailed in (fixing?) vlong support?

the compiler quite early on converts most vlong operators to function calls.
fixing it requires implementing it properly, which eventually requires
changing all the code generators, not just 8c/8l.

Re: [9fans] COND LIST on vlong

[David Tolpin]

>
> If and when brucee does his thing and we have new vlong support,
> it will work.  Right now, vlong is a very strangely supported type.
>

Ok, so typedef long long off_t; expressions are left for later support
when available in the compiler.

David

Re: [9fans] COND LIST on vlong

[Bruce Ellis]

please don't make me sad.  i had a lot of it done but i had -
yes - a double disk crash in a brownout.  i've been silly
and playing music in-between trying to recover data.
it's cool with me now - i know how to do it and the code
may be cleaner this time.  damn that ax/dx need for MUL.

brucee
----- Original Message ----- 
From: "David Presotto" <presotto@closedmind.org>
To: <9fans@cse.psu.edu>
Sent: Saturday, March 06, 2004 12:58 AM
Subject: Re: [9fans] COND LIST on vlong


> If and when brucee does his thing and we have new vlong support,
> it will work.  Right now, vlong is a very strangely supported type.

Re: [9fans] COND LIST on vlong

[Russ Cox]

> > COND LIST and COMMA are not supported by C compiler for vlong. 
> > Is it a feature or an omission?
> 
> Its clearly an omission and I know that ken intended it.  Is that
> what you're asking?

It's an omission.  Ken decided it was too hard.

Russ