From 43a7b105087d501780979b183af137f5f7d5e45c Mon Sep 17 00:00:00 2001 From: Wolfgang Bangerth Date: Mon, 24 Apr 2006 23:13:44 +0000 Subject: [PATCH] We now do have identity matrices. git-svn-id: https://svn.dealii.org/trunk@12881 0785d39b-7218-0410-832d-ea1e28bc413d --- deal.II/doc/news/changes.html | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/deal.II/doc/news/changes.html b/deal.II/doc/news/changes.html index 021e7db38d..dd02cde18d 100644 --- a/deal.II/doc/news/changes.html +++ b/deal.II/doc/news/changes.html @@ -442,6 +442,19 @@ inconvenience this causes.
    +
  1. New: There is a new class IdentityMatrix that represents an + efficient version of the matrix with ones on the diagonal and + zeros everywhere else. The main usefulness of this matrix lies + in the fact that most other important matrix classes have + assignment operators and copy constructors that allow to + conveniently fill a (sparse, full) matrix with the identity + matrix. +
    + (WB 2006/04/24) +

    + +
  2. New: There are now assignment operators from BlockVector to Vector and back. -- 2.39.5