New procedure bicgstab

[David Bateman]

Jaroslav Hajek wrote:
> On Mon, Dec 22, 2008 at 2:02 PM, Søren Hauberg <soren at hauberg.org> wrote:
>   
>> man, 22 12 2008 kl. 11:05 +0100, skrev Jaroslav Hajek:
>>     
>>> On Mon, Dec 22, 2008 at 10:14 AM, R! <salac.r at gmail.com> wrote:
>>>       
>>>> Hi,
>>>>
>>>> I understand that good preconditioning is very important for procedure like
>>>> bicgstab and cgs which I wrote, so maybe I can now try to write ILU
>>>> procedure for Octave if you find it useful.
>>>>
>>>> But I'm also interested in your opinion about bicgstab now.
>>>>
>>>>         
>>> Certainly it's useful. Not even in the sparse world is every matrix
>>> ill-conditioned.
>>> The Krylov solvers are IMHO an important missing piece in Octave. It's
>>> great someone took up the job. Even not-quite-optimized
>>> implementations are a good take-off.
>>> Having gmres would be great, too.
>>>       
>> Where should we put stuff like this? The 'optimization' package is
>> option.
>>
>>     
>
> Radek's previous cgs contribution went into script/sparse/ and I guess it fits.
>   
>

That is where matlab puts them...  I don't have much time to deal with 
reviewing and adding this code to Octave.. It should go in the core as 
it is a core matlab function...

D.



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