Re: [ublas] How to access pointer to matrix/vector elements?

From: Gunter Winkler (guwi17_at_[hidden])
Date: 2008-05-27 15:04:14

Am Dienstag, 27. Mai 2008 20:58 schrieb Jeremy Conlin:
> I am trying to call LAPACK functions using ublas objects.  The LAPACK
> functions require a pointer to the first array element of the matrix.
>  I tried:
> matrix<double> A(3,3);
>
> and then pass A.data() as the pointer to the elements of A.  The
> compiler didn't like that.  What is the best way to get the pointer
> to the elements of A?
>

AFAIR: use &(A.data()[0]) which is of type double*.

(if this does not work try A.data().data() or read the sources of the 
lapack bindings.)

mfg
Gunter