RE: [Help-gsl] Matrix multiplcation

[Martell, Larry]

There is a matrix multiply function in oper_source.c, but that
function does a straight element by element multiply, e.g.:

         c(n,p) = a(n,p) * b(n,p)

For a true matrix multiply, i.e.:


         c(n,p) = a(n,1) * b(1,p) + a(n,2) * b(2,p) + ... + a(n,m) * b(m,p)

you need  to look at the basic linear algebra functions (BLAS).
The matrix - matrix routines are BLAS Level 3. Ssee the GSL CBLAS 
example in the documentation.

HTH,

-larry


________________________________

From: address@hidden on behalf of charmi Mohamed Ali
Sent: Mon 3/21/2005 9:29 AM
To: address@hidden
Subject: [Help-gsl] Matrix multiplcation



Hi,
I'm a GSL Beginner.
I can't find a function to muliplicate 2 matrix!!
Thanks,



CHARMI Mohamed Ali
Student in Computer Sc. & Image processing
ENSI, University of Manouba
Phone: +21622716308, +33625449442
Website: www.chermi.tk  


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