| 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 Benoit Jacob <jacob.benoit.1@gmail.com> |
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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_LAZY_H |
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| 11 | #define EIGEN_LAZY_H |
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| 12 | |
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| 13 | namespace Eigen { |
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| 14 | |
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| 15 | /** \deprecated it is only used by lazy() which is deprecated |
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| 16 | * |
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| 17 | * \returns an expression of *this with added flags |
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| 18 | * |
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| 19 | * Example: \include MatrixBase_marked.cpp |
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| 20 | * Output: \verbinclude MatrixBase_marked.out |
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| 21 | * |
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| 22 | * \sa class Flagged, extract(), part() |
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| 23 | */ |
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| 24 | template<typename Derived> |
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| 25 | template<unsigned int Added> |
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| 26 | inline const Flagged<Derived, Added, 0> |
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| 27 | MatrixBase<Derived>::marked() const |
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| 28 | { |
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| 29 | return derived(); |
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| 30 | } |
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| 31 | |
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| 32 | /** \deprecated use MatrixBase::noalias() |
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| 33 | * |
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| 34 | * \returns an expression of *this with the EvalBeforeAssigningBit flag removed. |
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| 35 | * |
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| 36 | * Example: \include MatrixBase_lazy.cpp |
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| 37 | * Output: \verbinclude MatrixBase_lazy.out |
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| 38 | * |
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| 39 | * \sa class Flagged, marked() |
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| 40 | */ |
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| 41 | template<typename Derived> |
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| 42 | inline const Flagged<Derived, 0, EvalBeforeAssigningBit> |
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| 43 | MatrixBase<Derived>::lazy() const |
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| 44 | { |
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| 45 | return derived(); |
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| 46 | } |
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| 47 | |
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| 48 | |
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| 49 | /** \internal |
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| 50 | * Overloaded to perform an efficient C += (A*B).lazy() */ |
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| 51 | template<typename Derived> |
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| 52 | template<typename ProductDerived, typename Lhs, typename Rhs> |
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| 53 | Derived& MatrixBase<Derived>::operator+=(const Flagged<ProductBase<ProductDerived, Lhs,Rhs>, 0, |
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| 54 | EvalBeforeAssigningBit>& other) |
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| 55 | { |
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| 56 | other._expression().derived().addTo(derived()); return derived(); |
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| 57 | } |
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| 58 | |
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| 59 | /** \internal |
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| 60 | * Overloaded to perform an efficient C -= (A*B).lazy() */ |
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| 61 | template<typename Derived> |
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| 62 | template<typename ProductDerived, typename Lhs, typename Rhs> |
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| 63 | Derived& MatrixBase<Derived>::operator-=(const Flagged<ProductBase<ProductDerived, Lhs,Rhs>, 0, |
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| 64 | EvalBeforeAssigningBit>& other) |
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| 65 | { |
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| 66 | other._expression().derived().subTo(derived()); return derived(); |
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| 67 | } |
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| 68 | |
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| 69 | } // end namespace Eigen |
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| 70 | |
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| 71 | #endif // EIGEN_LAZY_H |
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