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author | Benoit Steiner <benoit.steiner.goog@gmail.com> | 2015-02-06 05:25:03 -0800 |
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committer | Benoit Steiner <benoit.steiner.goog@gmail.com> | 2015-02-06 05:25:03 -0800 |
commit | c739102ef9a52fcb194dcc77f785aa55879987e4 (patch) | |
tree | 22d19d1df4cb20baea532fa1ce13208329ff53e3 /Eigen/src/Core/ProductBase.h | |
parent | 2559fa9b0f20ea138cfb019d441ad1757221568d (diff) | |
parent | a8f2c6eec788c5cccc6beb9b5837544ea98a7154 (diff) |
Pulled the latest changes from the trunk
Diffstat (limited to 'Eigen/src/Core/ProductBase.h')
-rw-r--r-- | Eigen/src/Core/ProductBase.h | 247 |
1 files changed, 0 insertions, 247 deletions
diff --git a/Eigen/src/Core/ProductBase.h b/Eigen/src/Core/ProductBase.h index 483914a9b..050343b2d 100644 --- a/Eigen/src/Core/ProductBase.h +++ b/Eigen/src/Core/ProductBase.h @@ -12,253 +12,6 @@ namespace Eigen { -/** \class ProductBase - * \ingroup Core_Module - * - */ - -namespace internal { -template<typename Derived, typename _Lhs, typename _Rhs> -struct traits<ProductBase<Derived,_Lhs,_Rhs> > -{ - typedef MatrixXpr XprKind; - typedef typename remove_all<_Lhs>::type Lhs; - typedef typename remove_all<_Rhs>::type Rhs; - typedef typename scalar_product_traits<typename Lhs::Scalar, typename Rhs::Scalar>::ReturnType Scalar; - typedef typename promote_storage_type<typename traits<Lhs>::StorageKind, - typename traits<Rhs>::StorageKind>::ret StorageKind; - typedef typename promote_index_type<typename traits<Lhs>::Index, - typename traits<Rhs>::Index>::type Index; - enum { - RowsAtCompileTime = traits<Lhs>::RowsAtCompileTime, - ColsAtCompileTime = traits<Rhs>::ColsAtCompileTime, - MaxRowsAtCompileTime = traits<Lhs>::MaxRowsAtCompileTime, - MaxColsAtCompileTime = traits<Rhs>::MaxColsAtCompileTime, - Flags = (MaxRowsAtCompileTime==1 ? RowMajorBit : 0) - | EvalBeforeNestingBit | EvalBeforeAssigningBit | NestByRefBit, - // Note that EvalBeforeNestingBit and NestByRefBit - // are not used in practice because nested is overloaded for products - CoeffReadCost = 0 // FIXME why is it needed ? - }; -}; -} - -#define EIGEN_PRODUCT_PUBLIC_INTERFACE(Derived) \ - typedef ProductBase<Derived, Lhs, Rhs > Base; \ - EIGEN_DENSE_PUBLIC_INTERFACE(Derived) \ - typedef typename Base::LhsNested LhsNested; \ - typedef typename Base::_LhsNested _LhsNested; \ - typedef typename Base::LhsBlasTraits LhsBlasTraits; \ - typedef typename Base::ActualLhsType ActualLhsType; \ - typedef typename Base::_ActualLhsType _ActualLhsType; \ - typedef typename Base::RhsNested RhsNested; \ - typedef typename Base::_RhsNested _RhsNested; \ - typedef typename Base::RhsBlasTraits RhsBlasTraits; \ - typedef typename Base::ActualRhsType ActualRhsType; \ - typedef typename Base::_ActualRhsType _ActualRhsType; \ - using Base::m_lhs; \ - using Base::m_rhs; - -template<typename Derived, typename Lhs, typename Rhs> -class ProductBase : public MatrixBase<Derived> -{ - public: - typedef MatrixBase<Derived> Base; - EIGEN_DENSE_PUBLIC_INTERFACE(ProductBase) - - typedef typename Lhs::Nested LhsNested; - typedef typename internal::remove_all<LhsNested>::type _LhsNested; - typedef internal::blas_traits<_LhsNested> LhsBlasTraits; - typedef typename LhsBlasTraits::DirectLinearAccessType ActualLhsType; - typedef typename internal::remove_all<ActualLhsType>::type _ActualLhsType; - typedef typename internal::traits<Lhs>::Scalar LhsScalar; - - typedef typename Rhs::Nested RhsNested; - typedef typename internal::remove_all<RhsNested>::type _RhsNested; - typedef internal::blas_traits<_RhsNested> RhsBlasTraits; - typedef typename RhsBlasTraits::DirectLinearAccessType ActualRhsType; - typedef typename internal::remove_all<ActualRhsType>::type _ActualRhsType; - typedef typename internal::traits<Rhs>::Scalar RhsScalar; - - // Diagonal of a product: no need to evaluate the arguments because they are going to be evaluated only once - typedef CoeffBasedProduct<LhsNested, RhsNested, 0> FullyLazyCoeffBaseProductType; - - public: - - typedef typename Base::PlainObject PlainObject; - - ProductBase(const Lhs& a_lhs, const Rhs& a_rhs) - : m_lhs(a_lhs), m_rhs(a_rhs) - { - eigen_assert(a_lhs.cols() == a_rhs.rows() - && "invalid matrix product" - && "if you wanted a coeff-wise or a dot product use the respective explicit functions"); - } - - inline Index rows() const { return m_lhs.rows(); } - inline Index cols() const { return m_rhs.cols(); } - - template<typename Dest> - inline void evalTo(Dest& dst) const { dst.setZero(); scaleAndAddTo(dst,Scalar(1)); } - - template<typename Dest> - inline void addTo(Dest& dst) const { scaleAndAddTo(dst,Scalar(1)); } - - template<typename Dest> - inline void subTo(Dest& dst) const { scaleAndAddTo(dst,Scalar(-1)); } - - template<typename Dest> - inline void scaleAndAddTo(Dest& dst, const Scalar& alpha) const { derived().scaleAndAddTo(dst,alpha); } - - const _LhsNested& lhs() const { return m_lhs; } - const _RhsNested& rhs() const { return m_rhs; } - - // Implicit conversion to the nested type (trigger the evaluation of the product) - operator const PlainObject& () const - { - m_result.resize(m_lhs.rows(), m_rhs.cols()); - derived().evalTo(m_result); - return m_result; - } - - const Diagonal<const FullyLazyCoeffBaseProductType,0> diagonal() const - { return FullyLazyCoeffBaseProductType(m_lhs, m_rhs); } - - template<int Index> - const Diagonal<FullyLazyCoeffBaseProductType,Index> diagonal() const - { return FullyLazyCoeffBaseProductType(m_lhs, m_rhs); } - - const Diagonal<FullyLazyCoeffBaseProductType,Dynamic> diagonal(Index index) const - { return FullyLazyCoeffBaseProductType(m_lhs, m_rhs).diagonal(index); } - - // restrict coeff accessors to 1x1 expressions. No need to care about mutators here since this isn't an Lvalue expression - typename Base::CoeffReturnType coeff(Index row, Index col) const - { - EIGEN_STATIC_ASSERT_SIZE_1x1(Derived) - eigen_assert(this->rows() == 1 && this->cols() == 1); - Matrix<Scalar,1,1> result = *this; - return result.coeff(row,col); - } - - typename Base::CoeffReturnType coeff(Index i) const - { - EIGEN_STATIC_ASSERT_SIZE_1x1(Derived) - eigen_assert(this->rows() == 1 && this->cols() == 1); - Matrix<Scalar,1,1> result = *this; - return result.coeff(i); - } - - const Scalar& coeffRef(Index row, Index col) const - { - EIGEN_STATIC_ASSERT_SIZE_1x1(Derived) - eigen_assert(this->rows() == 1 && this->cols() == 1); - return derived().coeffRef(row,col); - } - - const Scalar& coeffRef(Index i) const - { - EIGEN_STATIC_ASSERT_SIZE_1x1(Derived) - eigen_assert(this->rows() == 1 && this->cols() == 1); - return derived().coeffRef(i); - } - - protected: - - LhsNested m_lhs; - RhsNested m_rhs; - - mutable PlainObject m_result; -}; - -// here we need to overload the nested rule for products -// such that the nested type is a const reference to a plain matrix -namespace internal { -template<typename Lhs, typename Rhs, int Mode, int N, typename PlainObject> -struct nested<GeneralProduct<Lhs,Rhs,Mode>, N, PlainObject> -{ - typedef PlainObject const& type; -}; -} - -template<typename NestedProduct> -class ScaledProduct; - -// Note that these two operator* functions are not defined as member -// functions of ProductBase, because, otherwise we would have to -// define all overloads defined in MatrixBase. Furthermore, Using -// "using Base::operator*" would not work with MSVC. -// -// Also note that here we accept any compatible scalar types -template<typename Derived,typename Lhs,typename Rhs> -const ScaledProduct<Derived> -operator*(const ProductBase<Derived,Lhs,Rhs>& prod, const typename Derived::Scalar& x) -{ return ScaledProduct<Derived>(prod.derived(), x); } - -template<typename Derived,typename Lhs,typename Rhs> -typename internal::enable_if<!internal::is_same<typename Derived::Scalar,typename Derived::RealScalar>::value, - const ScaledProduct<Derived> >::type -operator*(const ProductBase<Derived,Lhs,Rhs>& prod, const typename Derived::RealScalar& x) -{ return ScaledProduct<Derived>(prod.derived(), x); } - - -template<typename Derived,typename Lhs,typename Rhs> -const ScaledProduct<Derived> -operator*(const typename Derived::Scalar& x,const ProductBase<Derived,Lhs,Rhs>& prod) -{ return ScaledProduct<Derived>(prod.derived(), x); } - -template<typename Derived,typename Lhs,typename Rhs> -typename internal::enable_if<!internal::is_same<typename Derived::Scalar,typename Derived::RealScalar>::value, - const ScaledProduct<Derived> >::type -operator*(const typename Derived::RealScalar& x,const ProductBase<Derived,Lhs,Rhs>& prod) -{ return ScaledProduct<Derived>(prod.derived(), x); } - -namespace internal { -template<typename NestedProduct> -struct traits<ScaledProduct<NestedProduct> > - : traits<ProductBase<ScaledProduct<NestedProduct>, - typename NestedProduct::_LhsNested, - typename NestedProduct::_RhsNested> > -{ - typedef typename traits<NestedProduct>::StorageKind StorageKind; -}; -} - -template<typename NestedProduct> -class ScaledProduct - : public ProductBase<ScaledProduct<NestedProduct>, - typename NestedProduct::_LhsNested, - typename NestedProduct::_RhsNested> -{ - public: - typedef ProductBase<ScaledProduct<NestedProduct>, - typename NestedProduct::_LhsNested, - typename NestedProduct::_RhsNested> Base; - typedef typename Base::Scalar Scalar; - typedef typename Base::PlainObject PlainObject; -// EIGEN_PRODUCT_PUBLIC_INTERFACE(ScaledProduct) - - ScaledProduct(const NestedProduct& prod, const Scalar& x) - : Base(prod.lhs(),prod.rhs()), m_prod(prod), m_alpha(x) {} - - template<typename Dest> - inline void evalTo(Dest& dst) const { dst.setZero(); scaleAndAddTo(dst, Scalar(1)); } - - template<typename Dest> - inline void addTo(Dest& dst) const { scaleAndAddTo(dst, Scalar(1)); } - - template<typename Dest> - inline void subTo(Dest& dst) const { scaleAndAddTo(dst, Scalar(-1)); } - - template<typename Dest> - inline void scaleAndAddTo(Dest& dst, const Scalar& a_alpha) const { m_prod.derived().scaleAndAddTo(dst,a_alpha * m_alpha); } - - const Scalar& alpha() const { return m_alpha; } - - protected: - const NestedProduct& m_prod; - Scalar m_alpha; -}; - /** \internal * Overloaded to perform an efficient C = (A*B).lazy() */ template<typename Derived> |