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diff --git a/src/armadillo/include/armadillo_bits/fn_vectorise.hpp b/src/armadillo/include/armadillo_bits/fn_vectorise.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 fn_vectorise
+//! @{
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+typename
+enable_if2
+  <
+  is_arma_type<T1>::value,
+  const Op<T1, op_vectorise_col>
+  >::result
+vectorise(const T1& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  return Op<T1, op_vectorise_col>(X);
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+typename
+enable_if2
+  <
+  is_arma_type<T1>::value,
+  const Op<T1, op_vectorise_all>
+  >::result
+vectorise(const T1& X, const uword dim)
+  {
+  arma_extra_debug_sigprint();
+  
+  arma_debug_check( (dim > 1), "vectorise(): parameter 'dim' must be 0 or 1" );
+  
+  return Op<T1, op_vectorise_all>(X, dim, 0);
+  }
+
+
+
+template<typename T1>
+arma_warn_unused
+inline
+CubeToMatOp<T1, op_vectorise_cube_col>
+vectorise(const BaseCube<typename T1::elem_type, T1>& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  return CubeToMatOp<T1, op_vectorise_cube_col>(X.get_ref());
+  }
+
+
+
+//! Vectorization for sparse objects.
+template<typename T1>
+arma_warn_unused
+inline
+typename
+enable_if2
+  <
+  is_arma_sparse_type<T1>::value,
+  const SpOp<T1, spop_vectorise_col>
+  >::result
+vectorise(const T1& X)
+  {
+  arma_extra_debug_sigprint();
+
+  return SpOp<T1, spop_vectorise_col>(X);
+  }
+
+
+
+//! Vectorization for sparse objects.
+template<typename T1>
+arma_warn_unused
+inline
+typename
+enable_if2
+  <
+  is_arma_sparse_type<T1>::value,
+  const SpOp<T1, spop_vectorise_all>
+  >::result
+vectorise(const T1& X, const uword dim)
+  {
+  arma_extra_debug_sigprint();
+
+  arma_debug_check( (dim > 1), "vectorise(): parameter 'dim' must be 0 or 1" );
+
+  return SpOp<T1, spop_vectorise_all>(X, dim, 0);
+  }
+
+
+//! @}