From ebc70459cf4783077a772470615eaeaf60929643 Mon Sep 17 00:00:00 2001
From: Oliver Sander <sander@igpm.rwth-aachen.de>
Date: Fri, 15 Jul 2011 09:37:07 +0000
Subject: [PATCH] document the getFirstDerivativesOfDirectors method
[[Imported from SVN: r7563]]
---
dune/gfe/rotation.hh | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/dune/gfe/rotation.hh b/dune/gfe/rotation.hh
index e97c6638..049943e8 100644
--- a/dune/gfe/rotation.hh
+++ b/dune/gfe/rotation.hh
@@ -470,6 +470,12 @@ public:
return v;
}
+ /** \brief Compute the derivatives of the director vectors with respect to the quaternion coordinates
+ *
+ * Let \f$ d_k(q) = (d_{k,1}, d_{k,2}, d_{k,3})\f$ be the k-th director vector at \f$ q \f$.
+ * Then the return value of this method is
+ * \f[ A_{ijk} = \frac{\partial d_{i,j}}{\partial q_k} \f]
+ */
void getFirstDerivativesOfDirectors(Tensor3<double,3, 3, 4>& dd_dq) const
{
const Quaternion<T>& q = (*this);
--
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