LADEL

Introduction

LADEL is a package providing LDL and factorization update routines for sparse matrices.

Installation

Please see the Installation instructions page.

Using LADEL (in Matlab)

Using LADEL from Matlab is simple. Here is an example

%% Generate data
n = 10;
M = sprand(n,n, 1e-1, 1) + 2*speye(n);
M = (M+M')/2; %make sure M is symmetric
x = rand(n,1);
 
%% Example 1: factorize and solve
solver = ladel(n);
solver.factorize(M);
y = solver.dense_solve(x);
assert(norm(y-M\x) < 1e-12);

You can find many other examples in LADEL/mex/demos.

License

LGPL 3.0