[Scilab-users] mput ( int16([1:len]), 's', fid ) ; Creates a file of 20296 bytes ! ! !

[Stéphane Mottelet]

Hello,

With Scilab 6.0.1 under OSX or Linux, and your script

len = 10000 ;
fid = mopen(fullfile(TMPDIR,'Scilab.bin'),'wb+');
mput (int16([1:len]), 's', fid ) ;
mt1 = mtell(fid) ;
mseek(0, fid) ;
rm = mget(len, 's', fid);
mclose(fid);
printf('%i %i', mt1, length(rm))

I got the expected answer:

20000 10000
--> mt1
  mt1  =

    20000.

However, I confirm that under Scilab 6.0.1 under Windows 7 I got the 
same result as yours:

20296 25
--> mt1
  mt1  =

    20296.

This is somewhat related to http://bugzilla.scilab.org/show_bug.cgi?id=3684

In order to have the correct behavior change "w+" to "wb+" in the mopen

I will create a bug report on http://bugzilla.scilab.org


S.


Le 10/01/2019 à 15:35, yannick a écrit :
> Hello,
>
> I try to go from MatLab to SciLab.
>
> I am a little disturbed by my first tests, maybe the change of context ...
>
> I'm probably using the instructions incorrectly, but my mistake is so huge
> that I can not see it.
> Can you help me open my eyes?
>
> The following code:
> *
> len = 10000 ;
> fid = mopen( 'C:\Users\yoon\Documents\MATLAB\Dorian\SciLab.bin' , 'w+' );
>
>     mput ( int16([1:len]), 's', fid ) ;      mt1 = mtell(fid) ;
>     mseek( 0 , fid  ) ;
>     rm = mget(len, 's', fid);
>
> mclose(fid);
>
> printf('%i %i', mt1, length(rm))
> *
> creates a file of 20296 bytes. I expected exactly 20000...
> mt1 == 20296.
> Moreover "mget" reads only 25 short words.
>
> If I simply changes "[1:len]" for "zeros(1,len)", every thing becomes ok,
> (file size and rm length).
>
> If I use double words instead short  " mput ( [1:len], 'd', fid ) ; "
>   the file size is 80040    and rm's length 2060 !!!
>
>    What's missing me?
>
>    Thank's in advance,
>     Yannick
>
>
>
> --
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-- 
Stéphane Mottelet
Ingénieur de recherche
EA 4297 Transformations Intégrées de la Matière Renouvelable
Département Génie des Procédés Industriels
Sorbonne Universités - Université de Technologie de Compiègne
CS 60319, 60203 Compiègne cedex
Tel : +33(0)344234688
http://www.utc.fr/~mottelet