From maintainers-request at octave dot org Sun Sep  4 07:43:52 2005
Subject: Re: New Sparse Packages
From: David Bateman <David dot Bateman at motorola dot com>
To: Andy Adler <adler at site dot uOttawa dot ca>
CC: octave maintainers mailing list <maintainers at octave dot org>
Date: Sun, 04 Sep 2005 15:05:28 +0200

Andy Adler a écrit :

>David,
>
>This sounds like good news. That new code, especially with 64 bit
>versions will be a nice advantage to octave. While I agree that
>moving to a new package is a little bit of pain. It will be nice
>to have all the sparse routines in one package.
>
>Have you yet had time to figure out wither this will change any
>of the Sparse class in octave. ie. will those of us who write
>sparse code need to plan for any changes?
>  
>
Ok, so I lied it will introduce another user visible change. The 
interface to colamd and symamd changed, in that the definition of the 
second argument to colamd and symamd changed. This is used when 
determining which rows/cols are to be considered as dense and moved to 
the end of the reordering.

I checked in an updated version of Fcolamd, Fsymand and Fetree that can 
be built for 64-bit systems. Check the help of colamd and symamd for the 
new definition of "knobs"...

Cheers
David