Newsgroups: comp.lang.apl
Path: watmath!undergrad.math.waterloo.edu!cayley.uwaterloo.ca!bdcrafto
From: bdcrafto@cayley.uwaterloo.ca (Brad Crafton)
Subject: Matrix Inverse in APL2
Message-ID: <C0puI4.Mv6@undergrad.math.waterloo.edu>
Sender: news@undergrad.math.waterloo.edu
Organization: University of Waterloo
Date: Tue, 12 Jan 1993 00:54:03 GMT

HELP!!  For a project I'm doing for work I require a routine to take the
Inverse of a very large matrix (in the order of 1000x1000).  The 
Matrix Inverse function tends to bomb out at even a 10x10 matrix.

I am assuming that some sort of Gaussian Elimination routine is
needed.  Is there somewhere where I could find a pre-written routine?

I realize that for a matrix so large, it would probably take a LONG
time to run.  But could anyone guestimate what kind of time I'm
looking at?  Minutes?  Hours?  If it means anything, most of the
entries in the matrix will be zero.


Any help would be appreciated!

Brad.

-- 
-----
Brad Crafton                            bdcrafton@descartes.UWaterloo.CA
3B Actuarial Science, University of Waterloo, Waterloo, Ontario, Canada.
