Re: [Help-gsl] Strange gsl_blas_dsymv() behaviour

[Frank Reininghaus]

Hi,

2008/2/16, Korusef <address@hidden>:
>
> Hi, I was trying to use GSL for matrix/vector multiplication but strange
> error occurred and I received different results than I expected.


I don't quite understand why you expect only three different entries in the
result vector of the multiplication. Your matrix J does *NOT* have squares
with the value 801900 around the diagonal as you said, but 9 diagonals
containing this value on both sides of the main diagonal. Therefore, it is
quite clear that you get lots of different entries in your result vector.

Hope I could help you!
Frank