[scilab-Users] Umpfpack dll

[Eric Jacquet-Lagrèze]

Hello

Has someone experience using UMPFPACK library (dll under windows) ?

 

I would like to now how to access to the Umfpack method for solving spare
linear systems  using  scilab-5.2.1

 

A = sparse( [ 2  3  0  0  0;

              3  0  4  0  6; 

              0 -1 -3  2  0; 

              0  0  1  0  0; 

              0  4  2  0  1] );

b = [8 ; 45; -3; 3; 19];

 

Lusolve  works well

x=lusolve(A,b)

 x  =

 

    1.  

    2.  

    3.  

    4.  

    5.  

norm(A*x-b)

 ans  =

 

    0.  

But when I call umfpack, it does not find the dll:

>x = umfpack(b,"/",A) 

                     !--error 999 

Impossible de charger la bibliothèque umfpack.dll : La procédure spécifiée
est introuvable.

 

Nevertheless umfpack.dll exists in the directory  C:\Program
Files\scilab-5.2.1\bin  

 

Eric JACQUET-LAGREZE

EURODECISION

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