From a2cda825a609b81020ba5e6a41344e6df4e44320 Mon Sep 17 00:00:00 2001
From: Max Kahnt <max.kahnt@fu-berlin.de>
Date: Mon, 16 Oct 2017 13:45:40 +0200
Subject: [PATCH] [Fix] isQuadratic utility function.

---
 dune/matrix-vector/traits/utilities.hh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dune/matrix-vector/traits/utilities.hh b/dune/matrix-vector/traits/utilities.hh
index 1ae672e..07b90d4 100644
--- a/dune/matrix-vector/traits/utilities.hh
+++ b/dune/matrix-vector/traits/utilities.hh
@@ -92,7 +92,8 @@ namespace MatrixVector {
 
 template <class T>
 constexpr auto isQuadratic() {
-  return Std::bool_constant<Traits::IsQuadratic<std::decay_t<T>>::dimension>();
+  return std::integral_constant<
+      int, Traits::IsQuadratic<std::decay_t<T>>::dimension>();
 }
 
 } // end namespace MatrixVector
-- 
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