188 lines
4.0 KiB
C++
188 lines
4.0 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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//
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// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
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// Copyright 2008-2016 National ICT Australia (NICTA)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// ------------------------------------------------------------------------
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//! \addtogroup fn_reshape
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//! @{
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template<typename T1>
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arma_warn_unused
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inline
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typename enable_if2< is_arma_type<T1>::value, const Op<T1, op_reshape> >::result
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reshape(const T1& X, const uword new_n_rows, const uword new_n_cols)
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{
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arma_debug_sigprint();
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return Op<T1, op_reshape>(X, new_n_rows, new_n_cols);
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}
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template<typename T1>
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arma_warn_unused
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inline
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typename enable_if2< is_arma_type<T1>::value, const Op<T1, op_reshape> >::result
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reshape(const T1& X, const SizeMat& s)
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{
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arma_debug_sigprint();
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return Op<T1, op_reshape>(X, s.n_rows, s.n_cols);
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}
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template<typename T1>
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arma_frown("don't use this form: it will be removed")
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inline
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Mat<typename T1::elem_type>
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reshape(const Base<typename T1::elem_type,T1>& X, const uword new_n_rows, const uword new_n_cols, const uword dim)
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{
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arma_debug_sigprint();
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typedef typename T1::elem_type eT;
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arma_conform_check( (dim > 1), "reshape(): parameter 'dim' must be 0 or 1" );
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const quasi_unwrap<T1> U(X.get_ref());
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const Mat<eT>& A = U.M;
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Mat<eT> out;
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if(dim == 0)
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{
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op_reshape::apply_mat_noalias(out, A, new_n_rows, new_n_cols);
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}
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else
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if(dim == 1)
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{
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Mat<eT> tmp;
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op_strans::apply_mat_noalias(tmp, A);
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op_reshape::apply_mat_noalias(out, tmp, new_n_rows, new_n_cols);
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}
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return out;
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}
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template<typename T1>
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arma_warn_unused
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inline
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const OpCube<T1, op_reshape>
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reshape(const BaseCube<typename T1::elem_type,T1>& X, const uword new_n_rows, const uword new_n_cols, const uword new_n_slices)
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{
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arma_debug_sigprint();
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return OpCube<T1, op_reshape>(X.get_ref(), new_n_rows, new_n_cols, new_n_slices);
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}
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template<typename T1>
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arma_warn_unused
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inline
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const OpCube<T1, op_reshape>
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reshape(const BaseCube<typename T1::elem_type,T1>& X, const SizeCube& s)
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{
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arma_debug_sigprint();
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return OpCube<T1, op_reshape>(X.get_ref(), s.n_rows, s.n_cols, s.n_slices);
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}
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template<typename T1>
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arma_warn_unused
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inline
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const SpOp<T1, spop_reshape>
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reshape(const SpBase<typename T1::elem_type, T1>& X, const uword new_n_rows, const uword new_n_cols)
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{
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arma_debug_sigprint();
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return SpOp<T1, spop_reshape>(X.get_ref(), new_n_rows, new_n_cols);
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}
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template<typename T1>
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arma_warn_unused
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inline
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const SpOp<T1, spop_reshape>
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reshape(const SpBase<typename T1::elem_type, T1>& X, const SizeMat& s)
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{
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arma_debug_sigprint();
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return SpOp<T1, spop_reshape>(X.get_ref(), s.n_rows, s.n_cols);
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}
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//
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template<typename oT>
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arma_warn_unused
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inline
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field<oT>
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reshape(const field<oT>& A, const uword new_n_rows, const uword new_n_cols, const uword new_n_slices = uword(1))
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{
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arma_debug_sigprint();
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field<oT> B(new_n_rows, new_n_cols, new_n_slices);
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const uword n_elem_to_copy = (std::min)(A.n_elem, B.n_elem);
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for(uword i=0; i < n_elem_to_copy; ++i) { B.at(i) = A.at(i); }
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return B;
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}
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template<typename oT>
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arma_warn_unused
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inline
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field<oT>
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reshape(const field<oT>& A, const SizeMat& s)
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{
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arma_debug_sigprint();
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return reshape(A, s.n_rows, s.n_cols);
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}
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template<typename oT>
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arma_warn_unused
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inline
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field<oT>
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reshape(const field<oT>& A, const SizeCube& s)
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{
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arma_debug_sigprint();
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return reshape(A, s.n_rows, s.n_cols, s.n_slices);
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}
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//! @}
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