From 3da2bbcd72e5c5b98dc5462b2aa77913833700f2 Mon Sep 17 00:00:00 2001
From: Uli Sack <usack@math.fu-berlin.de>
Date: Mon, 27 Oct 2014 22:14:47 +0100
Subject: [PATCH] introduce Construction via initializer list; copied more or
less from FieldVector, see also FS#1166
---
dune/common/diagonalmatrix.hh | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/dune/common/diagonalmatrix.hh b/dune/common/diagonalmatrix.hh
index 51b750ecd..c8b66b24f 100644
--- a/dune/common/diagonalmatrix.hh
+++ b/dune/common/diagonalmatrix.hh
@@ -7,10 +7,12 @@
\brief This file implements a quadratic diagonal matrix of fixed size.
*/
+#include <algorithm>
#include <cassert>
#include <cmath>
#include <complex>
#include <cstddef>
+#include <initializer_list>
#include <iostream>
#include <memory>
@@ -106,6 +108,13 @@ namespace Dune {
: diag_(diag)
{}
+ DiagonalMatrix (std::initializer_list<K> const &l)
+ {
+ assert(l.size() == rows);// Actually, this is not needed any more!
+ std::copy_n(l.begin(), std::min(static_cast<std::size_t>(rows),
+ l.size()),
+ diag_.begin());
+ }
/** \brief Assignment from a scalar */
DiagonalMatrix& operator= (const K& k)
--
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