| // This file is part of Eigen, a lightweight C++ template library | |
| // for linear algebra. | |
| // | |
| // Copyright (C) 2008 Gael Guennebaud <g.gael@free.fr> | |
| // | |
| // Eigen is free software; you can redistribute it and/or | |
| // modify it under the terms of the GNU Lesser General Public | |
| // License as published by the Free Software Foundation; either | |
| // version 3 of the License, or (at your option) any later version. | |
| // | |
| // Alternatively, you can redistribute it and/or | |
| // modify it under the terms of the GNU General Public License as | |
| // published by the Free Software Foundation; either version 2 of | |
| // the License, or (at your option) any later version. | |
| // | |
| // Eigen is distributed in the hope that it will be useful, but WITHOUT ANY | |
| // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
| // FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the | |
| // GNU General Public License for more details. | |
| // | |
| // You should have received a copy of the GNU Lesser General Public | |
| // License and a copy of the GNU General Public License along with | |
| // Eigen. If not, see <http://www.gnu.org/licenses/>. | |
| #ifndef EIGEN_SPARSE_DOT_H | |
| #define EIGEN_SPARSE_DOT_H | |
| template<typename Derived> | |
| template<typename OtherDerived> | |
| typename ei_traits<Derived>::Scalar | |
| SparseMatrixBase<Derived>::dot(const MatrixBase<OtherDerived>& other) const | |
| { | |
| EIGEN_STATIC_ASSERT_VECTOR_ONLY(Derived) | |
| EIGEN_STATIC_ASSERT_VECTOR_ONLY(OtherDerived) | |
| EIGEN_STATIC_ASSERT_SAME_VECTOR_SIZE(Derived,OtherDerived) | |
| EIGEN_STATIC_ASSERT((ei_is_same_type<Scalar, typename OtherDerived::Scalar>::ret), | |
| YOU_MIXED_DIFFERENT_NUMERIC_TYPES__YOU_NEED_TO_USE_THE_CAST_METHOD_OF_MATRIXBASE_TO_CAST_NUMERIC_TYPES_EXPLICITLY) | |
| ei_assert(size() == other.size()); | |
| ei_assert(other.size()>0 && "you are using a non initialized vector"); | |
| typename Derived::InnerIterator i(derived(),0); | |
| Scalar res = 0; | |
| while (i) | |
| { | |
| res += ei_conj(i.value()) * other.coeff(i.index()); | |
| ++i; | |
| } | |
| return res; | |
| } | |
| template<typename Derived> | |
| template<typename OtherDerived> | |
| typename ei_traits<Derived>::Scalar | |
| SparseMatrixBase<Derived>::dot(const SparseMatrixBase<OtherDerived>& other) const | |
| { | |
| EIGEN_STATIC_ASSERT_VECTOR_ONLY(Derived) | |
| EIGEN_STATIC_ASSERT_VECTOR_ONLY(OtherDerived) | |
| EIGEN_STATIC_ASSERT_SAME_VECTOR_SIZE(Derived,OtherDerived) | |
| EIGEN_STATIC_ASSERT((ei_is_same_type<Scalar, typename OtherDerived::Scalar>::ret), | |
| YOU_MIXED_DIFFERENT_NUMERIC_TYPES__YOU_NEED_TO_USE_THE_CAST_METHOD_OF_MATRIXBASE_TO_CAST_NUMERIC_TYPES_EXPLICITLY) | |
| ei_assert(size() == other.size()); | |
| typename Derived::InnerIterator i(derived(),0); | |
| typename OtherDerived::InnerIterator j(other.derived(),0); | |
| Scalar res = 0; | |
| while (i && j) | |
| { | |
| if (i.index()==j.index()) | |
| { | |
| res += ei_conj(i.value()) * j.value(); | |
| ++i; ++j; | |
| } | |
| else if (i.index()<j.index()) | |
| ++i; | |
| else | |
| ++j; | |
| } | |
| return res; | |
| } | |
| template<typename Derived> | |
| inline typename NumTraits<typename ei_traits<Derived>::Scalar>::Real | |
| SparseMatrixBase<Derived>::squaredNorm() const | |
| { | |
| return ei_real((*this).cwiseAbs2().sum()); | |
| } | |
| template<typename Derived> | |
| inline typename NumTraits<typename ei_traits<Derived>::Scalar>::Real | |
| SparseMatrixBase<Derived>::norm() const | |
| { | |
| return ei_sqrt(squaredNorm()); | |
| } | |
| #endif // EIGEN_SPARSE_DOT_H |