Re: [fs] Re: Variable types

[Giovanni A. Cignoni]

> Do you know of an existing set of type specifications 
> that exist in XML-land? Having a starting point, or better 
> yet, having a DTD we could appropriate would be nice.
> 
> Otherwise, we'll need to come up with a short list (perhaps 
> you've done this above). An interesting question would be, 
> do we define the precision (for example, does double mean 
> 32-bit or 62-bits?) or is this necessary.

I didn't an extensive research. I arranged something mostly
inspired by the C++ types. I've to rework it a bit then
I will send it to you.

Thanks for your interest, ciao,
Giovanni.

Re: Variable types

[Bruce Jackson]

>Hi there!
>
>I'm working on a simulator of generic systems.
>The system specification is done in XML and this explains
>my interest in DAVE-ML.
>
>One thing I noticed in DAVE-ML is the lack of a type
>specification (int, bool, float, ...) in the variable definition
>element. Because the system specification can be used to
>generate  code, having an attribute that specifies the type
>is a nice information.
>
>The attribute can be optional, in general it provides more
>information about the variable and it can be used or ignored by
>the application reading the XML.
>
>Similar considerations can be done also to other useful
>variable properties, for instance to explicitely define if
>the variable is a constant, or an input or output variable.
>This information can of course be derived by analisys of the
>use of the variable in the following, but having it (optionally)
>specified is more simple for the code generator, more clear
>for the human reader and allows some checks that can prevent
>errors.
>
>Do you have plans to introduce such kind of attributes in
>future versions of DAVE-ML?
>
>Thanks for your attention and best regards,
>Giovanni A. Cignoni.

Giovanni,

That's an excellent suggestion.

Do you know of an existing set of type specifications that exist in XML-land? Having a 
starting point, or better yet, having a DTD we could appropriate would be nice.

Otherwise, we'll need to come up with a short list (perhaps you've done this above). 
An interesting question would be, do we define the precision (for example, does double 
mean 32-bit or 62-bits?) or is this necessary.

Thanks for the suggestion. Version 1.8b1 will be out soon and probably will address 
this, thanks to your contribution!

-- Bruce
-- 
Bruce Jackson mailto:[EMAIL PROTECTED] Dynamics and Control Branch
18C West Taylor Street MS 132 Airborne Systems Competency
NASA Langley Research Center  Hampton, Virginia 23681
More info about DAVE-ML: 
Simulation standards discussion listserv mailto:[EMAIL PROTECTED]

Variable types

[Giovanni A. Cignoni]

Hi there!

I'm working on a simulator of generic systems.
The system specification is done in XML and this explains
my interest in DAVE-ML.

One thing I noticed in DAVE-ML is the lack of a type 
specification (int, bool, float, ...) in the variable definition 
element. Because the system specification can be used to 
generate  code, having an attribute that specifies the type 
is a nice information.

The attribute can be optional, in general it provides more 
information about the variable and it can be used or ignored by
the application reading the XML.

Similar considerations can be done also to other useful
variable properties, for instance to explicitely define if 
the variable is a constant, or an input or output variable. 
This information can of course be derived by analisys of the 
use of the variable in the following, but having it (optionally)
specified is more simple for the code generator, more clear 
for the human reader and allows some checks that can prevent 
errors.

Do you have plans to introduce such kind of attributes in 
future versions of DAVE-ML?

Thanks for your attention and best regards,
Giovanni A. Cignoni.