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diff --git a/src/armadillo/include/armadillo_bits/hdf5_name.hpp b/src/armadillo/include/armadillo_bits/hdf5_name.hpp
new file mode 100644
index 0000000..8dd38cc
--- /dev/null
+++ b/src/armadillo/include/armadillo_bits/hdf5_name.hpp
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: Apache-2.0
+// 
+// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
+// Copyright 2008-2016 National ICT Australia (NICTA)
+// 
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ------------------------------------------------------------------------
+
+
+//! \addtogroup diskio
+//! @{
+
+
+namespace hdf5_opts
+  {
+  typedef unsigned int flag_type;
+  
+  struct opts
+    {
+    const flag_type flags;
+    
+    inline constexpr explicit opts(const flag_type in_flags);
+    
+    inline const opts operator+(const opts& rhs) const;
+    };
+  
+  inline
+  constexpr
+  opts::opts(const flag_type in_flags)
+    : flags(in_flags)
+    {}
+  
+  inline
+  const opts
+  opts::operator+(const opts& rhs) const
+    {
+    const opts result( flags | rhs.flags );
+    
+    return result;
+    }
+  
+  // The values below (eg. 1u << 0) are for internal Armadillo use only.
+  // The values can change without notice.
+  
+  static constexpr flag_type flag_none    = flag_type(0      );
+  static constexpr flag_type flag_trans   = flag_type(1u << 0);
+  static constexpr flag_type flag_append  = flag_type(1u << 1);
+  static constexpr flag_type flag_replace = flag_type(1u << 2);
+  
+  struct opts_none    : public opts { inline constexpr opts_none()    : opts(flag_none   ) {} };
+  struct opts_trans   : public opts { inline constexpr opts_trans()   : opts(flag_trans  ) {} };
+  struct opts_append  : public opts { inline constexpr opts_append()  : opts(flag_append ) {} };
+  struct opts_replace : public opts { inline constexpr opts_replace() : opts(flag_replace) {} };
+  
+  static constexpr opts_none    none;
+  static constexpr opts_trans   trans;
+  static constexpr opts_append  append;
+  static constexpr opts_replace replace;
+  }
+
+
+struct hdf5_name
+  {
+  const std::string     filename;
+  const std::string     dsname;
+  const hdf5_opts::opts opts;
+  
+  inline
+  hdf5_name(const std::string& in_filename)
+    : filename(in_filename    )
+    , dsname  (std::string()  )
+    , opts    (hdf5_opts::none)
+    {}
+  
+  inline
+  hdf5_name(const std::string& in_filename, const std::string& in_dsname, const hdf5_opts::opts& in_opts = hdf5_opts::none)
+    : filename(in_filename)
+    , dsname  (in_dsname  )
+    , opts    (in_opts    )
+    {}
+  };
+
+
+//! @}