[Scilab-Dev] Fortran interfaces in a toolbox

[Allan CORNET]

Hi,

 

If you use ‘fort’, you have NOT a built-in defined in Scilab.

 

 

n  With toolbox_skeleton : from scilab, you do  f_sum(3,2)

 

In this gateway, you manage  errors and input/output arguments check-in
(check size, type, value , 
) and return results in scilab.

 

n  With ‘fort’ :  you need to do :

A = 3 ; B = 3 ;

C= 0 ;

fort(‘fsum’,A,1, « d »,B,1, « d », « out »,C,3,1, « d »)

 

in this case, you need to know size and type returned.

and if you have a error, you can not return this error to scilab.

 

 

For more information, see :

help call

help addinter

help api_scilab

 

 

for a quick and dirty tool, you can use ‘call’ or ‘fort’ but for a toolbox,
you need  to create a built-in when you call C or fortran code.

 

Best regards

 

Allan

 

--

-------------------------

Allan CORNET

-------------------------

The Scilab Consortium

Digiteo

Domaine de Voluceau

Rocquencourt - B.P. 105

78153 Le Chesnay Cedex

France

 

De : Jean-Pierre Dussault [mailto:Jean-Pierre.Dussault at USherbrooke.ca] 
Envoyé : jeudi 7 octobre 2010 22:21
À : dev at lists.scilab.org
Cc : Romain Cotte
Objet : [Scilab-Dev] Fortran interfaces in a toolbox

 

Hi!

the toolbox_skeleton as well as the instructions at 

http://wiki.scilab.org/howto/Create_a_toolbox  

wrap the example fortran  fsum  into a C-wrapper. However, there exists a
"fort" command in scilab which allows to interface directly a fortran
function. Why then use the complicated fortran --> C --> scilab path instead
of fortran --> fort(...)? 

Further complications arise when dealing with non-scalar variables which
will have to be properly converted in C before being properly transmitted to
scilab while the instruction "fort" takes care of this easily while hiding
cumbersome conversion details.

Will the "fort" command remain in scilab? If so, we will stick to using it!

Thx,

JPD

P.S. In the toolbox_skeleton (scilab binary distribution),  csum.h  and
csub.h  are missing.

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