Mercurial > repos > public > sbplib

view diags.m @ 510:71908bbce2e1 feature/quantumTriangles

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
tried to add 4th order magnus integrator which does not work
author Ylva Rydin <ylva.rydin@telia.com>
date Fri, 02 Jun 2017 17:46:01 +0200
parents 0b87863cb29c
children
line wrap: on
line source

function A = diags(B,d,m,n)
    assert(size(B,1) == m);

    A = repmat(B(:,1)*0, [1, n]);

    for i = 1:size(B,2)
        A(:,d(i)+ (1:m)) = A(:,d(i)+ (1:m)) + diag(B(:,i));
    end
end