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Diffstat (limited to 'src/armadillo/include/armadillo_bits/op_reverse_meat.hpp')
-rw-r--r-- | src/armadillo/include/armadillo_bits/op_reverse_meat.hpp | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/armadillo/include/armadillo_bits/op_reverse_meat.hpp b/src/armadillo/include/armadillo_bits/op_reverse_meat.hpp new file mode 100644 index 0000000..4edafa8 --- /dev/null +++ b/src/armadillo/include/armadillo_bits/op_reverse_meat.hpp @@ -0,0 +1,128 @@ +// 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); + } + } + } + } + + + +//! @} |