diff options
author | 2010-02-04 18:28:09 +0100 | |
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committer | 2010-02-04 18:28:09 +0100 | |
commit | 73eb0e633c506e86f20fa231269b5cd81ebd083c (patch) | |
tree | 2a0b10d92246f613831d0292022bba847f026a24 /Eigen/src/Core | |
parent | b44240180fdefc07fb576cc107c99aa60989eba9 (diff) |
* resurected Flagged from Eigen2Support
* reimplement .diagonal() for ProductBase to make (A*B).diagonal() more efficient!
Diffstat (limited to 'Eigen/src/Core')
-rw-r--r-- | Eigen/src/Core/Flagged.h | 121 | ||||
-rw-r--r-- | Eigen/src/Core/Product.h | 2 | ||||
-rw-r--r-- | Eigen/src/Core/ProductBase.h | 28 |
3 files changed, 148 insertions, 3 deletions
diff --git a/Eigen/src/Core/Flagged.h b/Eigen/src/Core/Flagged.h new file mode 100644 index 000000000..af00a68be --- /dev/null +++ b/Eigen/src/Core/Flagged.h @@ -0,0 +1,121 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2008 Benoit Jacob <jacob.benoit.1@gmail.com> +// +// Eigen is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 3 of the License, or (at your option) any later version. +// +// Alternatively, you can redistribute it and/or +// modify it under the terms of the GNU General Public License as +// published by the Free Software Foundation; either version 2 of +// the License, or (at your option) any later version. +// +// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License and a copy of the GNU General Public License along with +// Eigen. If not, see <http://www.gnu.org/licenses/>. + +#ifndef EIGEN_FLAGGED_H +#define EIGEN_FLAGGED_H + +/** \class Flagged + * + * \brief Expression with modified flags + * + * \param ExpressionType the type of the object of which we are modifying the flags + * \param Added the flags added to the expression + * \param Removed the flags removed from the expression (has priority over Added). + * + * This class represents an expression whose flags have been modified. + * It is the return type of MatrixBase::flagged() + * and most of the time this is the only way it is used. + * + * \sa MatrixBase::flagged() + */ +template<typename ExpressionType, unsigned int Added, unsigned int Removed> +struct ei_traits<Flagged<ExpressionType, Added, Removed> > : ei_traits<ExpressionType> +{ + enum { Flags = (ExpressionType::Flags | Added) & ~Removed }; +}; + +template<typename ExpressionType, unsigned int Added, unsigned int Removed> class Flagged + : public MatrixBase<Flagged<ExpressionType, Added, Removed> > +{ + public: + + typedef MatrixBase<Flagged> Base; + EIGEN_DENSE_PUBLIC_INTERFACE(Flagged) + typedef typename ei_meta_if<ei_must_nest_by_value<ExpressionType>::ret, + ExpressionType, const ExpressionType&>::ret ExpressionTypeNested; + typedef typename ExpressionType::InnerIterator InnerIterator; + + inline Flagged(const ExpressionType& matrix) : m_matrix(matrix) {} + + inline int rows() const { return m_matrix.rows(); } + inline int cols() const { return m_matrix.cols(); } + inline int stride() const { return m_matrix.stride(); } + + inline const Scalar coeff(int row, int col) const + { + return m_matrix.coeff(row, col); + } + + inline Scalar& coeffRef(int row, int col) + { + return m_matrix.const_cast_derived().coeffRef(row, col); + } + + inline const Scalar coeff(int index) const + { + return m_matrix.coeff(index); + } + + inline Scalar& coeffRef(int index) + { + return m_matrix.const_cast_derived().coeffRef(index); + } + + template<int LoadMode> + inline const PacketScalar packet(int row, int col) const + { + return m_matrix.template packet<LoadMode>(row, col); + } + + template<int LoadMode> + inline void writePacket(int row, int col, const PacketScalar& x) + { + m_matrix.const_cast_derived().template writePacket<LoadMode>(row, col, x); + } + + template<int LoadMode> + inline const PacketScalar packet(int index) const + { + return m_matrix.template packet<LoadMode>(index); + } + + template<int LoadMode> + inline void writePacket(int index, const PacketScalar& x) + { + m_matrix.const_cast_derived().template writePacket<LoadMode>(index, x); + } + + const ExpressionType& _expression() const { return m_matrix; } + + template<typename OtherDerived> + typename ExpressionType::PlainMatrixType solveTriangular(const MatrixBase<OtherDerived>& other) const; + + template<typename OtherDerived> + void solveTriangularInPlace(const MatrixBase<OtherDerived>& other) const; + + protected: + ExpressionTypeNested m_matrix; +}; + +#endif // EIGEN_FLAGGED_H diff --git a/Eigen/src/Core/Product.h b/Eigen/src/Core/Product.h index 7cfdee6cf..d7f17dd28 100644 --- a/Eigen/src/Core/Product.h +++ b/Eigen/src/Core/Product.h @@ -54,8 +54,6 @@ enum { Small = Dynamic/2 }; -enum { OuterProduct, InnerProduct, UnrolledProduct, GemvProduct, GemmProduct }; - template<typename Lhs, typename Rhs> struct ei_product_type { typedef typename ei_cleantype<Lhs>::type _Lhs; diff --git a/Eigen/src/Core/ProductBase.h b/Eigen/src/Core/ProductBase.h index 4e5490d6a..ef986baaa 100644 --- a/Eigen/src/Core/ProductBase.h +++ b/Eigen/src/Core/ProductBase.h @@ -25,6 +25,8 @@ #ifndef EIGEN_PRODUCTBASE_H #define EIGEN_PRODUCTBASE_H +enum { OuterProduct, InnerProduct, UnrolledProduct, GemvProduct, GemmProduct }; + /** \class ProductBase * */ @@ -69,7 +71,7 @@ class ProductBase : public MatrixBase<Derived> public: typedef MatrixBase<Derived> Base; EIGEN_DENSE_PUBLIC_INTERFACE(ProductBase) - + protected: typedef typename Lhs::Nested LhsNested; typedef typename ei_cleantype<LhsNested>::type _LhsNested; typedef ei_blas_traits<_LhsNested> LhsBlasTraits; @@ -82,6 +84,10 @@ class ProductBase : public MatrixBase<Derived> typedef typename RhsBlasTraits::DirectLinearAccessType ActualRhsType; typedef typename ei_cleantype<ActualRhsType>::type _ActualRhsType; + typedef typename ProductReturnType<Lhs,Rhs,UnrolledProduct>::Type CoeffBaseProductType; + typedef Flagged<CoeffBaseProductType,0,EvalBeforeNestingBit> LazyCoeffBaseProductType; + public: + typedef typename Base::PlainMatrixType PlainMatrixType; ProductBase(const Lhs& lhs, const Rhs& rhs) @@ -113,6 +119,26 @@ class ProductBase : public MatrixBase<Derived> const _LhsNested& lhs() const { return m_lhs; } const _RhsNested& rhs() const { return m_rhs; } + const Diagonal<LazyCoeffBaseProductType,0> diagonal() const + { return Diagonal<LazyCoeffBaseProductType,0>(CoeffBaseProductType(m_lhs, m_rhs)); } + + Diagonal<LazyCoeffBaseProductType,0> diagonal() + { return Diagonal<LazyCoeffBaseProductType,0>(CoeffBaseProductType(m_lhs, m_rhs)); } + + template<int Index> + const Diagonal<LazyCoeffBaseProductType,Index> diagonal() const + { return Diagonal<LazyCoeffBaseProductType,Index>(CoeffBaseProductType(m_lhs, m_rhs)); } + + template<int Index> + Diagonal<LazyCoeffBaseProductType,Index> diagonal() + { return Diagonal<LazyCoeffBaseProductType,Index>(CoeffBaseProductType(m_lhs, m_rhs)); } + + const Diagonal<LazyCoeffBaseProductType,Dynamic> diagonal(int index) const + { return Diagonal<LazyCoeffBaseProductType,Dynamic>(LazyCoeffBaseProductType(CoeffBaseProductType(m_lhs, m_rhs))).diagonal(index); } + + Diagonal<LazyCoeffBaseProductType,Dynamic> diagonal(int index) + { return Diagonal<LazyCoeffBaseProductType,Dynamic>(LazyCoeffBaseProductType(CoeffBaseProductType(m_lhs, m_rhs))).diagonal(index); } + protected: const LhsNested m_lhs; |