65 lines
1.8 KiB
C++
65 lines
1.8 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_diagvec
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//! @{
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//! extract main diagonal from matrix
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template<typename T1>
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arma_warn_unused
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arma_inline
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const Op<T1, op_diagvec>
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diagvec(const Base<typename T1::elem_type,T1>& X)
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{
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arma_debug_sigprint();
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return Op<T1, op_diagvec>(X.get_ref());
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}
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//! extract arbitrary diagonal from matrix
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template<typename T1>
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arma_warn_unused
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arma_inline
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const Op<T1, op_diagvec2>
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diagvec(const Base<typename T1::elem_type,T1>& X, const sword diag_id)
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{
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arma_debug_sigprint();
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return Op<T1, op_diagvec2>(X.get_ref(), ((diag_id < 0) ? -diag_id : diag_id), ((diag_id < 0) ? 1 : 0) );
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}
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template<typename T1>
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arma_warn_unused
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arma_inline
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const mtSpReduceOp<typename T1::elem_type, T1, op_sp_diagvec>
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diagvec(const SpBase<typename T1::elem_type,T1>& X, const sword diag_id = 0)
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{
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arma_debug_sigprint();
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return mtSpReduceOp<typename T1::elem_type, T1, op_sp_diagvec>(X.get_ref(), ((diag_id < 0) ? -diag_id : diag_id), ((diag_id < 0) ? 1 : 0) );
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}
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//! @}
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