| 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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