Add mdspan includes

From https://github.com/kokkos/mdspan

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/ext/mdspan/include/experimental/__p2389_bits/dims.hpp b/ext/mdspan/include/experimental/__p2389_bits/dims.hpp
new file mode 100644
index 0000000..0004521
--- /dev/null
+++ b/ext/mdspan/include/experimental/__p2389_bits/dims.hpp
@@ -0,0 +1,28 @@
+//@HEADER
+// ************************************************************************
+//
+//                        Kokkos v. 4.0
+//       Copyright (2022) National Technology & Engineering
+//               Solutions of Sandia, LLC (NTESS).
+//
+// Under the terms of Contract DE-NA0003525 with NTESS,
+// the U.S. Government retains certain rights in this software.
+//
+// Part of Kokkos, under the Apache License v2.0 with LLVM Exceptions.
+// See https://kokkos.org/LICENSE for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//@HEADER
+
+#pragma once
+
+// backward compatibility import into experimental
+namespace MDSPAN_IMPL_STANDARD_NAMESPACE {
+namespace MDSPAN_IMPL_PROPOSED_NAMESPACE {
+
+template< ::std::size_t Rank, class IndexType = std::size_t>
+using dims =
+  :: MDSPAN_IMPL_STANDARD_NAMESPACE :: dextents<IndexType, Rank>;
+
+} // namespace MDSPAN_IMPL_PROPOSED_NAMESPACE
+} // namespace MDSPAN_IMPL_STANDARD_NAMESPACE