Re: [ECOS] Can't use expressions in ecos.ecc any more?

Re: [ECOS] Can't use expressions in ecos.ecc any more?

[Grant Edwards]

On Wed, Dec 13, 2000 at 03:23:54PM +0000, Bart Veer wrote:
> 
>     Grant> Didn't expressions in ecos.ecc used to work?
> 
>     Grant> $ ecosconfig tree                              
>     Grant> C CYGNUM_MEMALLOC_FALLBACK_MALLOC_POOL_SIZE, Illegal current value 128*1024
>     Grant>   Legal values are: 32 to 0x7fffffff
>   
> No. You can have expressions in the original CDL, but the code for
> reading back savefiles has never supported expressions.
> 
> It is possible that a particular value is never referenced by other
> active CDL expressions. For example, if there were no constraints on
> CYGNUM_MEMALLOC_FALLBACK_MALLOC_POOL_SIZE then you could type in
> "128*1024", and in the generated header file you would end up with:
> 
>   #define CYGNUM_MEMALLOC_FALLBACK_MALLOC_POOL_SIZE 128*1024
> 
> For much code this would just work.

That must have been what happened.  I'd been using expressions
(just too lazy, I guess) for a couple things with 1.3.1, and
they generated errors with the CVS tree.  It's certainly not
worth any extra effort to get it to work.

-- 
Grant Edwards
grante@visi.com

Re: [ECOS] Can't use expressions in ecos.ecc any more?

[Lewin A.R.W. Edwards]

>    Grant> C CYGNUM_MEMALLOC_FALLBACK_MALLOC_POOL_SIZE, Illegal current 
> value 128*1024
>     Grant>   Legal values are: 32 to 0x7fffffff
>
>No. You can have expressions in the original CDL, but the code for
>reading back savefiles has never supported expressions.

Will the current code reliably error for expressions? It could be a bad 
source of confusion if certain expressions are interpreted as simple values 
(e.g. 0).

=== Lewin A.R.W. Edwards (Embedded Engineer)
Work: http://www.digi-frame.com/
Personal: http://www.zws.com/ and http://www.larwe.com/