45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
/*
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* Copyright © 2004-2011 Ondra Kamenik
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* Copyright © 2019 Dynare Team
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*
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* This file is part of Dynare.
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*
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* Dynare is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Dynare is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Dynare. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef KRON_UTILS_H
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#define KRON_UTILS_H
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#include "KronVector.hh"
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#include "QuasiTriangular.hh"
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class KronUtils
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{
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public:
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/* Computes x = (Iₘ⊗…⊗Iₘ⊗T⊗Iₘ⊗…⊗Iₘ⊗Iₙ)·x, where x is n×mᵈ.
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T must be m×m, number of ⊗ is d, level is the number of Iₘ’s
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between T and Iₙ plus 1. If level=0, then we multiply by Iₘ⊗…⊗Iₘ⊗T,
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T must be n×n. */
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static void multAtLevel(int level, const QuasiTriangular &t,
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KronVector &x);
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static void multAtLevelTrans(int level, const QuasiTriangular &t,
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KronVector &x);
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// Computes x=(Fᵀ⊗Fᵀ⊗…⊗K)·x
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static void multKron(const QuasiTriangular &f, const QuasiTriangular &k,
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KronVector &x);
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};
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#endif /* KRON_UTILS_H */
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