[Scilab-users] A gateway example in the current scilab-6.0.1 source still remaining in the scilab 5.5.2 old Scilab C API version.

[Antoine ELIAS]

Hello René,

With Scilab 5.3.0, late of 2010, we have introduce a new API that will 
be compatible with new Scilab 6 environment.
The goal was to depreciate stackx.h interface too dependent on the 
format of the old data storage format. ( called "stack" ).
This interface is defined in Scilab documentation : 
https://help.scilab.org/docs/6.0.0/en_US/section_57c66b650f71d7a7eaca3dfe608a4c08.html
During development of Scilab 6, we worked on a more efficient API: 
https://help.scilab.org/docs/6.0.1/en_US/api_scilab.html

If you want to write gateways and keep compatibility between 5 and 6, 
prefer 
https://help.scilab.org/docs/6.0.0/en_US/section_57c66b650f71d7a7eaca3dfe608a4c08.html
If you want to write for Scilab 6 and more use 
https://help.scilab.org/docs/6.0.1/en_US/api_scilab.html

You can find examples in documentation or in the demonstration toolbox 
'toolbox skeleton' in your Scilab installation folder. 
(SCI/contrib/toolbox_skeleton)
For example the same gateway writes in both API:
--> edit("SCI/contrib/toolbox_skeleton/sci_gateway/c/sci_csum.c"); 
//compatible 5 and 6 version
--> edit("SCI/contrib/toolbox_skeleton/sci_gateway/c/sci_csum6.c"); 
//scilab 6 and more

Thank you for the report, we need to update or remove old examples.
Regards,
Antoine
Le 01/02/2019 à 09:55, René Grognard a écrit :
> Dear user or developer experienced in the new Scilab C API,
>
> All the sub-directory: 
> scilab-6.0.1/share/scilab/modules/dynamic_link/examples/gateway, 
> giving a nice, non-trivial example of a gateway, seems an identical 
> copy of the same sub-directory in scilab-5.5.2.
>
> Is there somewhere a version converted for scilab-6.0.1 ?
>
> The conversion does not seem at all obvious to me. For example I 
> cannot see how the simple instructions given by: Port to the Scilab 6 
> C API, in: Gateways: from Scilab 5 to Scilab 6, could ever make this 
> gateway compatible with both the Scilab 5 and 6 APIs. (Is there a 
> "mapping" somewhere between the functions, etc, of the old and new 
> Scilab APIs as there is between Scilab and Matlab?)
>
> The conversion of that gateway example --- with matrix multiplication 
> in C --- would be a far better example to: Getting started with 
> API_Scilab, than the rather trivial one given. At any rate as it 
> stands the sub-directory in question has no place within the current 
> scilab-6.0.1.
>
> Thanks for any comment and maybe the location of an updated version of 
> this particular gateway example.
>
> René Grognard
>
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