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diff --git a/src/armadillo/include/armadillo_bits/spop_symmat_meat.hpp b/src/armadillo/include/armadillo_bits/spop_symmat_meat.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 spop_symmat
+//! @{
+
+
+
+template<typename T1>
+inline
+void
+spop_symmat::apply(SpMat<typename T1::elem_type>& out, const SpOp<T1,spop_symmat>& in)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap_spmat<T1> U(in.m);
+  const SpMat<eT>& X   = U.M;
+  
+  arma_debug_check( (X.n_rows != X.n_cols), "symmatu()/symmatl(): given matrix must be square sized" );
+  
+  if(X.n_nonzero == uword(0))  { out.zeros(X.n_rows, X.n_cols); return; }
+  
+  const bool upper = (in.aux_uword_a == 0);
+  
+  const SpMat<eT> A = (upper) ? trimatu(X) : trimatl(X);  // in this case trimatu() and trimatl() return the same type
+  const SpMat<eT> B = A.st();
+  
+  spglue_merge::symmat_merge(out, A, B);
+  }
+
+
+
+template<typename T1>
+inline
+void
+spop_symmat_cx::apply(SpMat<typename T1::elem_type>& out, const SpOp<T1,spop_symmat_cx>& in)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT;
+  
+  const unwrap_spmat<T1> U(in.m);
+  const SpMat<eT>& X   = U.M;
+  
+  arma_debug_check( (X.n_rows != X.n_cols), "symmatu()/symmatl(): given matrix must be square sized" );
+  
+  if(X.n_nonzero == uword(0))  { out.zeros(X.n_rows, X.n_cols); return; }
+  
+  const bool upper   = (in.aux_uword_a == 0);
+  const bool do_conj = (in.aux_uword_b == 1);
+  
+  const SpMat<eT> A = (upper) ? trimatu(X) : trimatl(X);  // in this case trimatu() and trimatl() return the same type
+  
+  if(do_conj)
+    {
+    const SpMat<eT> B = A.t();
+    
+    spglue_merge::symmat_merge(out, A, B);
+    }
+  else
+    {
+    const SpMat<eT> B = A.st();
+    
+    spglue_merge::symmat_merge(out, A, B);
+    }
+  }
+
+
+
+//! @}