1 // This file is part of Eigen, a lightweight C++ template library 2 // for linear algebra. 3 // 4 // Copyright (C) 2008 Benoit Jacob <jacob.benoit.1 (at) gmail.com> 5 // 6 // This Source Code Form is subject to the terms of the Mozilla 7 // Public License v. 2.0. If a copy of the MPL was not distributed 8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 9 10 #ifndef EIGEN_LAZY_H 11 #define EIGEN_LAZY_H 12 13 namespace Eigen { 14 15 /** \deprecated it is only used by lazy() which is deprecated 16 * 17 * \returns an expression of *this with added flags 18 * 19 * Example: \include MatrixBase_marked.cpp 20 * Output: \verbinclude MatrixBase_marked.out 21 * 22 * \sa class Flagged, extract(), part() 23 */ 24 template<typename Derived> 25 template<unsigned int Added> 26 inline const Flagged<Derived, Added, 0> 27 MatrixBase<Derived>::marked() const 28 { 29 return derived(); 30 } 31 32 /** \deprecated use MatrixBase::noalias() 33 * 34 * \returns an expression of *this with the EvalBeforeAssigningBit flag removed. 35 * 36 * Example: \include MatrixBase_lazy.cpp 37 * Output: \verbinclude MatrixBase_lazy.out 38 * 39 * \sa class Flagged, marked() 40 */ 41 template<typename Derived> 42 inline const Flagged<Derived, 0, EvalBeforeAssigningBit> 43 MatrixBase<Derived>::lazy() const 44 { 45 return derived(); 46 } 47 48 49 /** \internal 50 * Overloaded to perform an efficient C += (A*B).lazy() */ 51 template<typename Derived> 52 template<typename ProductDerived, typename Lhs, typename Rhs> 53 Derived& MatrixBase<Derived>::operator+=(const Flagged<ProductBase<ProductDerived, Lhs,Rhs>, 0, 54 EvalBeforeAssigningBit>& other) 55 { 56 other._expression().derived().addTo(derived()); return derived(); 57 } 58 59 /** \internal 60 * Overloaded to perform an efficient C -= (A*B).lazy() */ 61 template<typename Derived> 62 template<typename ProductDerived, typename Lhs, typename Rhs> 63 Derived& MatrixBase<Derived>::operator-=(const Flagged<ProductBase<ProductDerived, Lhs,Rhs>, 0, 64 EvalBeforeAssigningBit>& other) 65 { 66 other._expression().derived().subTo(derived()); return derived(); 67 } 68 69 } // end namespace Eigen 70 71 #endif // EIGEN_LAZY_H 72
