44 lines
1.4 KiB
C++
44 lines
1.4 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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namespace newarp
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{
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//! This class implements the eigen solver for real symmetric matrices in the shift-and-invert mode.
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template<typename eT, int SelectionRule, typename OpType>
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class SymEigsShiftSolver : public SymEigsSolver<eT, SelectionRule, OpType>
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{
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private:
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const eT sigma;
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// Sort the first nev Ritz pairs in ascending algebraic order
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// This is used to return the final results
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void sort_ritzpair();
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public:
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//! Constructor to create a solver object.
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inline SymEigsShiftSolver(const OpType& op_, uword nev_, uword ncv_, const eT sigma_);
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};
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} // namespace newarp
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