/usr/include/eigen3/Eigen/src/Eigen2Support/Lazy.h is in libeigen3-dev 3.2.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | // This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2008 Benoit Jacob <jacob.benoit.1@gmail.com>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
#ifndef EIGEN_LAZY_H
#define EIGEN_LAZY_H
namespace Eigen {
/** \deprecated it is only used by lazy() which is deprecated
*
* \returns an expression of *this with added flags
*
* Example: \include MatrixBase_marked.cpp
* Output: \verbinclude MatrixBase_marked.out
*
* \sa class Flagged, extract(), part()
*/
template<typename Derived>
template<unsigned int Added>
inline const Flagged<Derived, Added, 0>
MatrixBase<Derived>::marked() const
{
return derived();
}
/** \deprecated use MatrixBase::noalias()
*
* \returns an expression of *this with the EvalBeforeAssigningBit flag removed.
*
* Example: \include MatrixBase_lazy.cpp
* Output: \verbinclude MatrixBase_lazy.out
*
* \sa class Flagged, marked()
*/
template<typename Derived>
inline const Flagged<Derived, 0, EvalBeforeAssigningBit>
MatrixBase<Derived>::lazy() const
{
return derived();
}
/** \internal
* Overloaded to perform an efficient C += (A*B).lazy() */
template<typename Derived>
template<typename ProductDerived, typename Lhs, typename Rhs>
Derived& MatrixBase<Derived>::operator+=(const Flagged<ProductBase<ProductDerived, Lhs,Rhs>, 0,
EvalBeforeAssigningBit>& other)
{
other._expression().derived().addTo(derived()); return derived();
}
/** \internal
* Overloaded to perform an efficient C -= (A*B).lazy() */
template<typename Derived>
template<typename ProductDerived, typename Lhs, typename Rhs>
Derived& MatrixBase<Derived>::operator-=(const Flagged<ProductBase<ProductDerived, Lhs,Rhs>, 0,
EvalBeforeAssigningBit>& other)
{
other._expression().derived().subTo(derived()); return derived();
}
} // end namespace Eigen
#endif // EIGEN_LAZY_H
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