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diff --git a/src/armadillo/include/armadillo_bits/GenCube_bones.hpp b/src/armadillo/include/armadillo_bits/GenCube_bones.hpp
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+++ b/src/armadillo/include/armadillo_bits/GenCube_bones.hpp
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+// 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 GenCube
+//! @{
+
+
+//! support class for generator functions (zeros, ones)
+template<typename eT, typename gen_type>
+class GenCube
+  : public BaseCube< eT, GenCube<eT, gen_type> >
+  {
+  public:
+  
+  typedef          eT                              elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  
+  static constexpr bool use_at    = false;
+  static constexpr bool is_simple = (is_same_type<gen_type, gen_ones>::value) || (is_same_type<gen_type, gen_zeros>::value);
+  
+  arma_aligned const uword n_rows;
+  arma_aligned const uword n_cols;
+  arma_aligned const uword n_slices;
+  
+  arma_inline  GenCube(const uword in_n_rows, const uword in_n_cols, const uword in_n_slices);
+  arma_inline ~GenCube();
+  
+  arma_inline eT operator[] (const uword i)                               const;
+  arma_inline eT at         (const uword r, const uword c, const uword s) const;
+  arma_inline eT at_alt     (const uword i)                               const;
+  
+  inline void apply              (Cube<eT>& out) const;
+  inline void apply_inplace_plus (Cube<eT>& out) const;
+  inline void apply_inplace_minus(Cube<eT>& out) const;
+  inline void apply_inplace_schur(Cube<eT>& out) const;
+  inline void apply_inplace_div  (Cube<eT>& out) const;
+  
+  inline void apply(subview_cube<elem_type>& out) const;
+  };
+
+
+
+//! @}