1 | // This file is part of Eigen, a lightweight C++ template library
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2 | // for linear algebra.
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3 | //
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4 | // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
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5 | //
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6 | // This Source Code Form is subject to the terms of the Mozilla
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7 | // Public License v. 2.0. If a copy of the MPL was not distributed
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8 | // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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9 |
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10 | #ifndef EIGEN_SPARSE_DOT_H
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11 | #define EIGEN_SPARSE_DOT_H
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12 |
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13 | namespace Eigen {
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14 |
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15 | template<typename Derived>
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16 | template<typename OtherDerived>
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17 | typename internal::traits<Derived>::Scalar
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18 | SparseMatrixBase<Derived>::dot(const MatrixBase<OtherDerived>& other) const
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19 | {
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20 | EIGEN_STATIC_ASSERT_VECTOR_ONLY(Derived)
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21 | EIGEN_STATIC_ASSERT_VECTOR_ONLY(OtherDerived)
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22 | EIGEN_STATIC_ASSERT_SAME_VECTOR_SIZE(Derived,OtherDerived)
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23 | EIGEN_STATIC_ASSERT((internal::is_same<Scalar, typename OtherDerived::Scalar>::value),
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24 | YOU_MIXED_DIFFERENT_NUMERIC_TYPES__YOU_NEED_TO_USE_THE_CAST_METHOD_OF_MATRIXBASE_TO_CAST_NUMERIC_TYPES_EXPLICITLY)
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25 |
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26 | eigen_assert(size() == other.size());
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27 | eigen_assert(other.size()>0 && "you are using a non initialized vector");
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28 |
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29 | typename Derived::InnerIterator i(derived(),0);
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30 | Scalar res(0);
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31 | while (i)
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32 | {
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33 | res += numext::conj(i.value()) * other.coeff(i.index());
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34 | ++i;
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35 | }
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36 | return res;
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37 | }
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38 |
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39 | template<typename Derived>
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40 | template<typename OtherDerived>
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41 | typename internal::traits<Derived>::Scalar
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42 | SparseMatrixBase<Derived>::dot(const SparseMatrixBase<OtherDerived>& other) const
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43 | {
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44 | EIGEN_STATIC_ASSERT_VECTOR_ONLY(Derived)
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45 | EIGEN_STATIC_ASSERT_VECTOR_ONLY(OtherDerived)
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46 | EIGEN_STATIC_ASSERT_SAME_VECTOR_SIZE(Derived,OtherDerived)
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47 | EIGEN_STATIC_ASSERT((internal::is_same<Scalar, typename OtherDerived::Scalar>::value),
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48 | YOU_MIXED_DIFFERENT_NUMERIC_TYPES__YOU_NEED_TO_USE_THE_CAST_METHOD_OF_MATRIXBASE_TO_CAST_NUMERIC_TYPES_EXPLICITLY)
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49 |
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50 | eigen_assert(size() == other.size());
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51 |
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52 | typedef typename Derived::Nested Nested;
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53 | typedef typename OtherDerived::Nested OtherNested;
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54 | typedef typename internal::remove_all<Nested>::type NestedCleaned;
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55 | typedef typename internal::remove_all<OtherNested>::type OtherNestedCleaned;
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56 |
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57 | Nested nthis(derived());
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58 | OtherNested nother(other.derived());
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59 |
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60 | typename NestedCleaned::InnerIterator i(nthis,0);
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61 | typename OtherNestedCleaned::InnerIterator j(nother,0);
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62 | Scalar res(0);
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63 | while (i && j)
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64 | {
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65 | if (i.index()==j.index())
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66 | {
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67 | res += numext::conj(i.value()) * j.value();
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68 | ++i; ++j;
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69 | }
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70 | else if (i.index()<j.index())
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71 | ++i;
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72 | else
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73 | ++j;
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74 | }
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75 | return res;
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76 | }
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77 |
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78 | template<typename Derived>
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79 | inline typename NumTraits<typename internal::traits<Derived>::Scalar>::Real
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80 | SparseMatrixBase<Derived>::squaredNorm() const
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81 | {
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82 | return numext::real((*this).cwiseAbs2().sum());
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83 | }
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84 |
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85 | template<typename Derived>
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86 | inline typename NumTraits<typename internal::traits<Derived>::Scalar>::Real
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87 | SparseMatrixBase<Derived>::norm() const
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88 | {
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89 | using std::sqrt;
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90 | return sqrt(squaredNorm());
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91 | }
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92 |
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93 | template<typename Derived>
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94 | inline typename NumTraits<typename internal::traits<Derived>::Scalar>::Real
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95 | SparseMatrixBase<Derived>::blueNorm() const
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96 | {
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97 | return internal::blueNorm_impl(*this);
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98 | }
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99 | } // end namespace Eigen
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100 |
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101 | #endif // EIGEN_SPARSE_DOT_H
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