| // This file is part of Eigen, a lightweight C++ template library |
| // for linear algebra. |
| // |
| // Copyright (C) 2012 Chen-Pang He <jdh8@ms63.hinet.net> |
| // |
| // This Source Code Form is subject to the terms of the Mozilla |
| // Public License v. 2.0. If a copy of the MPL was not distributed |
| // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| |
| #ifndef EIGEN_GENERAL_RANK1UPDATE_H |
| #define EIGEN_GENERAL_RANK1UPDATE_H |
| |
| namespace internal { |
| |
| /* Optimized matrix += alpha * uv' */ |
| template<typename Scalar, typename Index, bool ConjRhs> |
| struct general_rank1_update |
| { |
| static void run(Index rows, Index cols, Scalar* mat, Index stride, const Scalar* u, const Scalar* v, Scalar alpha) |
| { |
| typedef Matrix<Scalar,Dynamic,1> PlainVector; |
| internal::conj_if<ConjRhs> cj; |
| for (Index i=0; i<cols; ++i) |
| Map<PlainVector>(mat+stride*i,rows) += alpha * cj(v[i]) * Map<const PlainVector>(u,rows); |
| } |
| }; |
| |
| } // end namespace internal |
| |
| #endif // EIGEN_GENERAL_RANK1UPDATE_H |
