From: Martin Kronbichler Date: Fri, 9 Feb 2018 17:53:24 +0000 (+0100) Subject: Add changelog. X-Git-Tag: v9.0.0-rc1~438^2 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F5879%2Fhead;p=dealii.git Add changelog. --- diff --git a/doc/news/changes/incompatibilities/20180209MartinKronbichler b/doc/news/changes/incompatibilities/20180209MartinKronbichler new file mode 100644 index 0000000000..267bb0d120 --- /dev/null +++ b/doc/news/changes/incompatibilities/20180209MartinKronbichler @@ -0,0 +1,8 @@ +New: The class FE_DGQHermite has been switched to the more stable polynomial +basis Polynomials::HermiteLikeInterpolation. This changes the representation +of the numbers by the FE_DGQHermite class. The change is yet highly beneficial +because it significantly improves the accuracy (in terms of roundoff) for this +basis and also reduces iteration counts for some iterative solvers with simple +preconditioner ingredients such as point-Jacobi or point-Jacobi smoothing. +
+(Martin Kronbichler, 2018/02/09) diff --git a/doc/news/changes/minor/20171227MartinKronbichler b/doc/news/changes/minor/20171227MartinKronbichler index 75b4080602..bc2c897ade 100644 --- a/doc/news/changes/minor/20171227MartinKronbichler +++ b/doc/news/changes/minor/20171227MartinKronbichler @@ -9,4 +9,4 @@ because only the final user code knows the properties of hardware and whether a particular store pattern is so large that it will not fit into caches and thus benefit from this optimization.
-(Martin Kronbichler, 2017/12/01) +(Martin Kronbichler, 2017/12/27) diff --git a/doc/news/changes/minor/20180209MartinKronbichler b/doc/news/changes/minor/20180209MartinKronbichler new file mode 100644 index 0000000000..18bfa1f19e --- /dev/null +++ b/doc/news/changes/minor/20180209MartinKronbichler @@ -0,0 +1,6 @@ +New: The new polynomial class Polynomials::HermiteLikeInterpolation is a +modification of the Hermite polynomials with good conditioning of +interpolation for all degrees, as opposed to the +Polynomials::HermiteInterpolation class. +
+(Anian Fuchs, Martin Kronbichler, 2018/02/09)