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diff --git a/src/armadillo/include/armadillo_bits/op_reverse_meat.hpp b/src/armadillo/include/armadillo_bits/op_reverse_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 op_reverse
+//! @{
+
+
+
+template<typename T1>
+inline
+void
+op_reverse::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_reverse>& in)
+ {
+ arma_extra_debug_sigprint();
+
+ typedef typename T1::elem_type eT;
+
+ const uword dim = in.aux_uword_a;
+
+ arma_debug_check( (dim > 1), "reverse(): parameter 'dim' must be 0 or 1" );
+
+ if(is_Mat<T1>::value)
+ {
+ // allow detection of in-place operation
+
+ const unwrap<T1> U(in.m);
+
+ if(dim == 0) { op_flipud::apply_direct(out, U.M); }
+ if(dim == 1) { op_fliplr::apply_direct(out, U.M); }
+ }
+ else
+ {
+ const Proxy<T1> P(in.m);
+
+ if(P.is_alias(out))
+ {
+ Mat<eT> tmp;
+
+ if(dim == 0) { op_flipud::apply_proxy_noalias(tmp, P); }
+ if(dim == 1) { op_fliplr::apply_proxy_noalias(tmp, P); }
+
+ out.steal_mem(tmp);
+ }
+ else
+ {
+ if(dim == 0) { op_flipud::apply_proxy_noalias(out, P); }
+ if(dim == 1) { op_fliplr::apply_proxy_noalias(out, P); }
+ }
+ }
+ }
+
+
+
+template<typename T1>
+inline
+void
+op_reverse_vec::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_reverse_vec>& in)
+ {
+ arma_extra_debug_sigprint();
+
+ typedef typename T1::elem_type eT;
+
+ if(is_Mat<T1>::value)
+ {
+ // allow detection of in-place operation
+
+ const unwrap<T1> U(in.m);
+
+ if((T1::is_xvec) ? bool(U.M.is_rowvec()) : bool(T1::is_row))
+ {
+ op_fliplr::apply_direct(out, U.M);
+ }
+ else
+ {
+ op_flipud::apply_direct(out, U.M);
+ }
+ }
+ else
+ {
+ const Proxy<T1> P(in.m);
+
+ if(P.is_alias(out))
+ {
+ Mat<eT> tmp;
+
+ if((T1::is_xvec) ? bool(P.get_n_rows() == 1) : bool(T1::is_row))
+ {
+ op_fliplr::apply_proxy_noalias(tmp, P);
+ }
+ else
+ {
+ op_flipud::apply_proxy_noalias(tmp, P);
+ }
+
+ out.steal_mem(tmp);
+ }
+ else
+ {
+ if((T1::is_xvec) ? bool(P.get_n_rows() == 1) : bool(T1::is_row))
+ {
+ op_fliplr::apply_proxy_noalias(out, P);
+ }
+ else
+ {
+ op_flipud::apply_proxy_noalias(out, P);
+ }
+ }
+ }
+ }
+
+
+
+//! @}