From 4d859e3d8eb00f1e509a2a55df5289ef63c518d2 Mon Sep 17 00:00:00 2001
From: Max Kahnt <max.kahnt@fu-berlin.de>
Date: Sun, 1 Oct 2017 21:41:05 +0200
Subject: [PATCH] Provide FieldTraits that are missing in the core modules.
---
dune/matrix-vector/traits/CMakeLists.txt | 5 +++--
dune/matrix-vector/traits/fieldtraits.hh | 22 ++++++++++++++++++++++
2 files changed, 25 insertions(+), 2 deletions(-)
create mode 100644 dune/matrix-vector/traits/fieldtraits.hh
diff --git a/dune/matrix-vector/traits/CMakeLists.txt b/dune/matrix-vector/traits/CMakeLists.txt
index 1efde8c..fceabef 100644
--- a/dune/matrix-vector/traits/CMakeLists.txt
+++ b/dune/matrix-vector/traits/CMakeLists.txt
@@ -1,7 +1,8 @@
#install headers
install(FILES
- scalartraits.hh
+ fieldtraits.hh
matrixtraits.hh
- vectortraits.hh
+ scalartraits.hh
utilities.hh
+ vectortraits.hh
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/dune/matrix-vector/traits)
diff --git a/dune/matrix-vector/traits/fieldtraits.hh b/dune/matrix-vector/traits/fieldtraits.hh
new file mode 100644
index 0000000..b3bd743
--- /dev/null
+++ b/dune/matrix-vector/traits/fieldtraits.hh
@@ -0,0 +1,22 @@
+#ifndef DUNE_MATRIX_VECTOR_TRAITS_FIELDTRAITS_HH
+#define DUNE_MATRIX_VECTOR_TRAITS_FIELDTRAITS_HH
+
+#include <dune/common/typetraits.hh>
+#include <dune/istl/scaledidmatrix.hh>
+
+/**
+ * \file
+ * Add FieldTraits that are not in the core modules.
+ */
+
+namespace Dune {
+
+template <class K, int n>
+struct FieldTraits<ScaledIdentityMatrix<K, n>> {
+ using field_type = field_t<K>;
+ using real_type = real_t<K>;
+};
+
+} // end namespace Dune
+
+#endif // DUNE_MATRIX_VECTOR_TRAITS_FIELDTRAITS_HH
--
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