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64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra. Eigen itself is part of the KDE project.
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//
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// Copyright (C) 2006-2008 Benoit Jacob <jacob@math.jussieu.fr>
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//
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// Eigen is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 3 of the License, or (at your option) any later version.
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//
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// Alternatively, you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of
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// the License, or (at your option) any later version.
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//
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// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or 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 Lesser General Public
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// License and a copy of the GNU General Public License along with
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// Eigen. If not, see <http://www.gnu.org/licenses/>.
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#ifndef EIGEN_SWAP_H
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#define EIGEN_SWAP_H
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template<typename Scalar, typename Derived>
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template<typename OtherDerived>
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void MatrixBase<Scalar, Derived>::swap(const MatrixBase<Scalar, OtherDerived>& other)
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{
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MatrixBase<Scalar, OtherDerived> *_other = const_cast<MatrixBase<Scalar, OtherDerived>*>(&other);
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if(Traits::SizeAtCompileTime == Dynamic)
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{
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Scalar tmp;
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if(Traits::IsVectorAtCompileTime)
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{
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assert(OtherDerived::Traits::IsVectorAtCompileTime && size() == _other->size());
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for(int i = 0; i < size(); i++)
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{
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tmp = coeff(i);
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coeffRef(i) = _other->coeff(i);
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_other->coeffRef(i) = tmp;
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}
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}
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else
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for(int j = 0; j < cols(); j++)
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for(int i = 0; i < rows(); i++)
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{
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tmp = coeff(i, j);
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coeffRef(i, j) = _other->coeff(i, j);
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_other->coeffRef(i, j) = tmp;
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}
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}
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else // SizeAtCompileTime != Dynamic
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{
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typename Eval<Derived>::MatrixType buf(*this);
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*this = other;
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*_other = buf;
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}
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}
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#endif // EIGEN_SWAP_H
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