Mercurial > repos > public > sbplib

view diags.m @ 1304:a38e80fdbf60 feature/poroelastic

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Improve performance for the hollow case
author Martin Almquist <malmquist@stanford.edu>
date Sat, 11 Jul 2020 07:25:06 -0700
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