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add MatrixBase::stableNorm() avoiding over/under-flow

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using it in QR reduced the error of Keir test from 1e-12 to 1e-24 but
that's much more expensive !
This commit is contained in:
Gael Guennebaud
2009-01-28 22:11:56 +00:00
parent 42b237b83a
commit 36c8a64923
6 changed files with 46 additions and 6 deletions
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Eigen/src/Core/DiagonalMatrix.h
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@@ -1,6 +1,7 @@
// This file is part of Eigen, a lightweight C++ template library
// for linear algebra. Eigen itself is part of the KDE project.
//
// Copyright (C) 2009 Gael Guennebaud <g.gael@free.fr>
// Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com>
//
// Eigen is free software; you can redistribute it and/or