From f6744282d107e33c5ee3afce9abe36bd1ad40f9b Mon Sep 17 00:00:00 2001
From: Oliver Sander <sander@igpm.rwth-aachen.de>
Date: Fri, 14 Jan 2011 10:14:22 +0000
Subject: [PATCH] introduce const method 'inverse' for convenience
[[Imported from SVN: r6740]]
---
dune/gfe/quaternion.hh | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/dune/gfe/quaternion.hh b/dune/gfe/quaternion.hh
index e21eb2be..712b2a54 100644
--- a/dune/gfe/quaternion.hh
+++ b/dune/gfe/quaternion.hh
@@ -146,6 +146,14 @@ public:
(*this) /= this->two_norm2();
}
+
+ /** \brief Yield the inverse quaternion */
+ Quaternion<T> inverse() const {
+
+ Quaternion<T> result = *this;
+ result.invert();
+ return result;
+ }
/** \brief Create three vectors which form an orthonormal basis of \mathbb{H} together
with this one.
--
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