Re: [Lapackpp-devel] inline, symmetry, transposition, other questions

[Dominik W. <dom...@ar...>]

> Not having a class
> at all but instead offer several functions (which will then be wrapper
> functions for the LAPACK factorizations) is also one such possibility.

I think this makes more sense for sybfd.h than a a whole class you don't
use. So I will delete the class and will only use functions. The first
function will then be delete as well.

> And I also cannot think of an easy solution here that would be all of
this: 1. easy
> for non-mathematics, 2. give the correct results, and 3. is powerful
enough
> to actually achieve this memory optimization. Sigh.

Did you take a look at the PP-classes that means "real symmetric
positive definite matrix stored in packed format", see
http://docs.sun.com/source/806-7993/dpptrs.html. I haven't found a
description what this matrices looks like but I would guess that only
one half of the matrix is stored.

> So if you're
> working on "dsyrk" of Blas_R1_Update, you can just as well add an
alternative
> function where the transpose setting is controlled by an additional
boolean
> argument. And since you're adding a new function, you can even choose the
> name for yourself :-)

I will do so. But boolean is not enough because it could be N, T or C as
argument.  Although I have never heard of Blas_R1_Update before I will
use the same name and will set the last char parameter as default='N'.
So we have backward compatibility and could use the new function. :)

> You're still invited to give me your sourceforge username and join the
> lapackpp project as a developer :-)

Yes. The username is "deedw" without quotes of course. :) But I have
never used CVS so it may be that I will send the new files to the
mailing list.

Greetings, Dominik