Everything is in the title, we need to be able to do things like: a.colwise().normalize(); b = a.rowwise().normalized(); which are very frequent. See for instance http://forum.kde.org/viewtopic.php?f=74&t=95000.
https://bitbucket.org/eigen/eigen/commits/2c41ae0178e2/ Changeset: 2c41ae0178e2 User: ggael Date: 2013-04-09 11:12:35 Summary: Fix bug 562: add vector-wise normalized and normalize functions
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