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diff --git a/src/armadillo/include/armadillo_bits/subview_elem2_bones.hpp b/src/armadillo/include/armadillo_bits/subview_elem2_bones.hpp
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+++ b/src/armadillo/include/armadillo_bits/subview_elem2_bones.hpp
@@ -0,0 +1,112 @@
+// 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 subview_elem2
+//! @{
+
+
+
+template<typename eT, typename T1, typename T2>
+class subview_elem2 : public Base< eT, subview_elem2<eT,T1,T2> >
+  {
+  public:    
+  
+  typedef eT                                       elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  
+  static constexpr bool is_row  = false;
+  static constexpr bool is_col  = false;
+  static constexpr bool is_xvec = false;
+  
+  arma_aligned const Mat<eT>& m;
+  
+  arma_aligned const Base<uword,T1>& base_ri;
+  arma_aligned const Base<uword,T2>& base_ci;
+  
+  const bool all_rows;
+  const bool all_cols;
+  
+  
+  protected:
+  
+  arma_inline subview_elem2(const Mat<eT>& in_m, const Base<uword,T1>& in_ri, const Base<uword,T2>& in_ci, const bool in_all_rows, const bool in_all_cols);
+  
+  
+  public:
+  
+  inline ~subview_elem2();
+  inline  subview_elem2() = delete;
+  
+  template<typename op_type>
+  inline void inplace_op(const eT val);
+  
+  template<typename op_type, typename expr>
+  inline void inplace_op(const Base<eT,expr>& x);
+  
+  inline void replace(const eT old_val, const eT new_val);
+  
+  inline void clean(const pod_type threshold);
+  
+  inline void clamp(const eT min_val, const eT max_val);
+  
+  inline void fill(const eT val);
+  inline void zeros();
+  inline void ones();
+  
+  inline void operator+= (const eT val);
+  inline void operator-= (const eT val);
+  inline void operator*= (const eT val);
+  inline void operator/= (const eT val);
+  
+  
+  // deliberately returning void
+  template<typename T3, typename T4> inline void operator_equ(const subview_elem2<eT,T3,T4>& x);
+  template<typename T3, typename T4> inline void operator=   (const subview_elem2<eT,T3,T4>& x);
+                                     inline void operator=   (const subview_elem2<eT,T1,T2>& x);
+  
+  template<typename T3, typename T4> inline void operator+=  (const subview_elem2<eT,T3,T4>& x);
+  template<typename T3, typename T4> inline void operator-=  (const subview_elem2<eT,T3,T4>& x);
+  template<typename T3, typename T4> inline void operator%=  (const subview_elem2<eT,T3,T4>& x);
+  template<typename T3, typename T4> inline void operator/=  (const subview_elem2<eT,T3,T4>& x);
+  
+  template<typename expr> inline void operator=  (const Base<eT,expr>& x);
+  template<typename expr> inline void operator+= (const Base<eT,expr>& x);
+  template<typename expr> inline void operator-= (const Base<eT,expr>& x);
+  template<typename expr> inline void operator%= (const Base<eT,expr>& x);
+  template<typename expr> inline void operator/= (const Base<eT,expr>& x);
+  
+  template<typename expr> inline void operator=  (const SpBase<eT,expr>& x);
+  template<typename expr> inline void operator+= (const SpBase<eT,expr>& x);
+  template<typename expr> inline void operator-= (const SpBase<eT,expr>& x);
+  template<typename expr> inline void operator%= (const SpBase<eT,expr>& x);
+  template<typename expr> inline void operator/= (const SpBase<eT,expr>& x);
+  
+  inline static void extract(Mat<eT>& out, const subview_elem2& in);
+  
+  inline static void  plus_inplace(Mat<eT>& out, const subview_elem2& in);
+  inline static void minus_inplace(Mat<eT>& out, const subview_elem2& in);
+  inline static void schur_inplace(Mat<eT>& out, const subview_elem2& in);
+  inline static void   div_inplace(Mat<eT>& out, const subview_elem2& in);
+  
+  
+  friend class Mat<eT>;
+  };
+
+
+
+//! @}