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- // This file is part of Eigen, a lightweight C++ template library
- // for linear algebra.
- //
- // Copyright (C) 2006-2010 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_DENSECOEFFSBASE_H
- #define EIGEN_DENSECOEFFSBASE_H
- namespace Eigen {
- namespace internal {
- template<typename T> struct add_const_on_value_type_if_arithmetic
- {
- typedef typename conditional<is_arithmetic<T>::value, T, typename add_const_on_value_type<T>::type>::type type;
- };
- }
- /** \brief Base class providing read-only coefficient access to matrices and arrays.
- * \ingroup Core_Module
- * \tparam Derived Type of the derived class
- * \tparam #ReadOnlyAccessors Constant indicating read-only access
- *
- * This class defines the \c operator() \c const function and friends, which can be used to read specific
- * entries of a matrix or array.
- *
- * \sa DenseCoeffsBase<Derived, WriteAccessors>, DenseCoeffsBase<Derived, DirectAccessors>,
- * \ref TopicClassHierarchy
- */
- template<typename Derived>
- class DenseCoeffsBase<Derived,ReadOnlyAccessors> : public EigenBase<Derived>
- {
- public:
- typedef typename internal::traits<Derived>::StorageKind StorageKind;
- typedef typename internal::traits<Derived>::Scalar Scalar;
- typedef typename internal::packet_traits<Scalar>::type PacketScalar;
- // Explanation for this CoeffReturnType typedef.
- // - This is the return type of the coeff() method.
- // - The LvalueBit means exactly that we can offer a coeffRef() method, which means exactly that we can get references
- // to coeffs, which means exactly that we can have coeff() return a const reference (as opposed to returning a value).
- // - The is_artihmetic check is required since "const int", "const double", etc. will cause warnings on some systems
- // while the declaration of "const T", where T is a non arithmetic type does not. Always returning "const Scalar&" is
- // not possible, since the underlying expressions might not offer a valid address the reference could be referring to.
- typedef typename internal::conditional<bool(internal::traits<Derived>::Flags&LvalueBit),
- const Scalar&,
- typename internal::conditional<internal::is_arithmetic<Scalar>::value, Scalar, const Scalar>::type
- >::type CoeffReturnType;
- typedef typename internal::add_const_on_value_type_if_arithmetic<
- typename internal::packet_traits<Scalar>::type
- >::type PacketReturnType;
- typedef EigenBase<Derived> Base;
- using Base::rows;
- using Base::cols;
- using Base::size;
- using Base::derived;
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE Index rowIndexByOuterInner(Index outer, Index inner) const
- {
- return int(Derived::RowsAtCompileTime) == 1 ? 0
- : int(Derived::ColsAtCompileTime) == 1 ? inner
- : int(Derived::Flags)&RowMajorBit ? outer
- : inner;
- }
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE Index colIndexByOuterInner(Index outer, Index inner) const
- {
- return int(Derived::ColsAtCompileTime) == 1 ? 0
- : int(Derived::RowsAtCompileTime) == 1 ? inner
- : int(Derived::Flags)&RowMajorBit ? inner
- : outer;
- }
- /** Short version: don't use this function, use
- * \link operator()(Index,Index) const \endlink instead.
- *
- * Long version: this function is similar to
- * \link operator()(Index,Index) const \endlink, but without the assertion.
- * Use this for limiting the performance cost of debugging code when doing
- * repeated coefficient access. Only use this when it is guaranteed that the
- * parameters \a row and \a col are in range.
- *
- * If EIGEN_INTERNAL_DEBUGGING is defined, an assertion will be made, making this
- * function equivalent to \link operator()(Index,Index) const \endlink.
- *
- * \sa operator()(Index,Index) const, coeffRef(Index,Index), coeff(Index) const
- */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE CoeffReturnType coeff(Index row, Index col) const
- {
- eigen_internal_assert(row >= 0 && row < rows()
- && col >= 0 && col < cols());
- return internal::evaluator<Derived>(derived()).coeff(row,col);
- }
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE CoeffReturnType coeffByOuterInner(Index outer, Index inner) const
- {
- return coeff(rowIndexByOuterInner(outer, inner),
- colIndexByOuterInner(outer, inner));
- }
- /** \returns the coefficient at given the given row and column.
- *
- * \sa operator()(Index,Index), operator[](Index)
- */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE CoeffReturnType operator()(Index row, Index col) const
- {
- eigen_assert(row >= 0 && row < rows()
- && col >= 0 && col < cols());
- return coeff(row, col);
- }
- /** Short version: don't use this function, use
- * \link operator[](Index) const \endlink instead.
- *
- * Long version: this function is similar to
- * \link operator[](Index) const \endlink, but without the assertion.
- * Use this for limiting the performance cost of debugging code when doing
- * repeated coefficient access. Only use this when it is guaranteed that the
- * parameter \a index is in range.
- *
- * If EIGEN_INTERNAL_DEBUGGING is defined, an assertion will be made, making this
- * function equivalent to \link operator[](Index) const \endlink.
- *
- * \sa operator[](Index) const, coeffRef(Index), coeff(Index,Index) const
- */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE CoeffReturnType
- coeff(Index index) const
- {
- EIGEN_STATIC_ASSERT(internal::evaluator<Derived>::Flags & LinearAccessBit,
- THIS_COEFFICIENT_ACCESSOR_TAKING_ONE_ACCESS_IS_ONLY_FOR_EXPRESSIONS_ALLOWING_LINEAR_ACCESS)
- eigen_internal_assert(index >= 0 && index < size());
- return internal::evaluator<Derived>(derived()).coeff(index);
- }
- /** \returns the coefficient at given index.
- *
- * This method is allowed only for vector expressions, and for matrix expressions having the LinearAccessBit.
- *
- * \sa operator[](Index), operator()(Index,Index) const, x() const, y() const,
- * z() const, w() const
- */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE CoeffReturnType
- operator[](Index index) const
- {
- EIGEN_STATIC_ASSERT(Derived::IsVectorAtCompileTime,
- THE_BRACKET_OPERATOR_IS_ONLY_FOR_VECTORS__USE_THE_PARENTHESIS_OPERATOR_INSTEAD)
- eigen_assert(index >= 0 && index < size());
- return coeff(index);
- }
- /** \returns the coefficient at given index.
- *
- * This is synonymous to operator[](Index) const.
- *
- * This method is allowed only for vector expressions, and for matrix expressions having the LinearAccessBit.
- *
- * \sa operator[](Index), operator()(Index,Index) const, x() const, y() const,
- * z() const, w() const
- */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE CoeffReturnType
- operator()(Index index) const
- {
- eigen_assert(index >= 0 && index < size());
- return coeff(index);
- }
- /** equivalent to operator[](0). */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE CoeffReturnType
- x() const { return (*this)[0]; }
- /** equivalent to operator[](1). */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE CoeffReturnType
- y() const
- {
- EIGEN_STATIC_ASSERT(Derived::SizeAtCompileTime==-1 || Derived::SizeAtCompileTime>=2, OUT_OF_RANGE_ACCESS);
- return (*this)[1];
- }
- /** equivalent to operator[](2). */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE CoeffReturnType
- z() const
- {
- EIGEN_STATIC_ASSERT(Derived::SizeAtCompileTime==-1 || Derived::SizeAtCompileTime>=3, OUT_OF_RANGE_ACCESS);
- return (*this)[2];
- }
- /** equivalent to operator[](3). */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE CoeffReturnType
- w() const
- {
- EIGEN_STATIC_ASSERT(Derived::SizeAtCompileTime==-1 || Derived::SizeAtCompileTime>=4, OUT_OF_RANGE_ACCESS);
- return (*this)[3];
- }
- /** \internal
- * \returns the packet of coefficients starting at the given row and column. It is your responsibility
- * to ensure that a packet really starts there. This method is only available on expressions having the
- * PacketAccessBit.
- *
- * The \a LoadMode parameter may have the value \a #Aligned or \a #Unaligned. Its effect is to select
- * the appropriate vectorization instruction. Aligned access is faster, but is only possible for packets
- * starting at an address which is a multiple of the packet size.
- */
- template<int LoadMode>
- EIGEN_STRONG_INLINE PacketReturnType packet(Index row, Index col) const
- {
- typedef typename internal::packet_traits<Scalar>::type DefaultPacketType;
- eigen_internal_assert(row >= 0 && row < rows() && col >= 0 && col < cols());
- return internal::evaluator<Derived>(derived()).template packet<LoadMode,DefaultPacketType>(row,col);
- }
- /** \internal */
- template<int LoadMode>
- EIGEN_STRONG_INLINE PacketReturnType packetByOuterInner(Index outer, Index inner) const
- {
- return packet<LoadMode>(rowIndexByOuterInner(outer, inner),
- colIndexByOuterInner(outer, inner));
- }
- /** \internal
- * \returns the packet of coefficients starting at the given index. It is your responsibility
- * to ensure that a packet really starts there. This method is only available on expressions having the
- * PacketAccessBit and the LinearAccessBit.
- *
- * The \a LoadMode parameter may have the value \a #Aligned or \a #Unaligned. Its effect is to select
- * the appropriate vectorization instruction. Aligned access is faster, but is only possible for packets
- * starting at an address which is a multiple of the packet size.
- */
- template<int LoadMode>
- EIGEN_STRONG_INLINE PacketReturnType packet(Index index) const
- {
- EIGEN_STATIC_ASSERT(internal::evaluator<Derived>::Flags & LinearAccessBit,
- THIS_COEFFICIENT_ACCESSOR_TAKING_ONE_ACCESS_IS_ONLY_FOR_EXPRESSIONS_ALLOWING_LINEAR_ACCESS)
- typedef typename internal::packet_traits<Scalar>::type DefaultPacketType;
- eigen_internal_assert(index >= 0 && index < size());
- return internal::evaluator<Derived>(derived()).template packet<LoadMode,DefaultPacketType>(index);
- }
- protected:
- // explanation: DenseBase is doing "using ..." on the methods from DenseCoeffsBase.
- // But some methods are only available in the DirectAccess case.
- // So we add dummy methods here with these names, so that "using... " doesn't fail.
- // It's not private so that the child class DenseBase can access them, and it's not public
- // either since it's an implementation detail, so has to be protected.
- void coeffRef();
- void coeffRefByOuterInner();
- void writePacket();
- void writePacketByOuterInner();
- void copyCoeff();
- void copyCoeffByOuterInner();
- void copyPacket();
- void copyPacketByOuterInner();
- void stride();
- void innerStride();
- void outerStride();
- void rowStride();
- void colStride();
- };
- /** \brief Base class providing read/write coefficient access to matrices and arrays.
- * \ingroup Core_Module
- * \tparam Derived Type of the derived class
- * \tparam #WriteAccessors Constant indicating read/write access
- *
- * This class defines the non-const \c operator() function and friends, which can be used to write specific
- * entries of a matrix or array. This class inherits DenseCoeffsBase<Derived, ReadOnlyAccessors> which
- * defines the const variant for reading specific entries.
- *
- * \sa DenseCoeffsBase<Derived, DirectAccessors>, \ref TopicClassHierarchy
- */
- template<typename Derived>
- class DenseCoeffsBase<Derived, WriteAccessors> : public DenseCoeffsBase<Derived, ReadOnlyAccessors>
- {
- public:
- typedef DenseCoeffsBase<Derived, ReadOnlyAccessors> Base;
- typedef typename internal::traits<Derived>::StorageKind StorageKind;
- typedef typename internal::traits<Derived>::Scalar Scalar;
- typedef typename internal::packet_traits<Scalar>::type PacketScalar;
- typedef typename NumTraits<Scalar>::Real RealScalar;
- using Base::coeff;
- using Base::rows;
- using Base::cols;
- using Base::size;
- using Base::derived;
- using Base::rowIndexByOuterInner;
- using Base::colIndexByOuterInner;
- using Base::operator[];
- using Base::operator();
- using Base::x;
- using Base::y;
- using Base::z;
- using Base::w;
- /** Short version: don't use this function, use
- * \link operator()(Index,Index) \endlink instead.
- *
- * Long version: this function is similar to
- * \link operator()(Index,Index) \endlink, but without the assertion.
- * Use this for limiting the performance cost of debugging code when doing
- * repeated coefficient access. Only use this when it is guaranteed that the
- * parameters \a row and \a col are in range.
- *
- * If EIGEN_INTERNAL_DEBUGGING is defined, an assertion will be made, making this
- * function equivalent to \link operator()(Index,Index) \endlink.
- *
- * \sa operator()(Index,Index), coeff(Index, Index) const, coeffRef(Index)
- */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE Scalar& coeffRef(Index row, Index col)
- {
- eigen_internal_assert(row >= 0 && row < rows()
- && col >= 0 && col < cols());
- return internal::evaluator<Derived>(derived()).coeffRef(row,col);
- }
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE Scalar&
- coeffRefByOuterInner(Index outer, Index inner)
- {
- return coeffRef(rowIndexByOuterInner(outer, inner),
- colIndexByOuterInner(outer, inner));
- }
- /** \returns a reference to the coefficient at given the given row and column.
- *
- * \sa operator[](Index)
- */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE Scalar&
- operator()(Index row, Index col)
- {
- eigen_assert(row >= 0 && row < rows()
- && col >= 0 && col < cols());
- return coeffRef(row, col);
- }
- /** Short version: don't use this function, use
- * \link operator[](Index) \endlink instead.
- *
- * Long version: this function is similar to
- * \link operator[](Index) \endlink, but without the assertion.
- * Use this for limiting the performance cost of debugging code when doing
- * repeated coefficient access. Only use this when it is guaranteed that the
- * parameters \a row and \a col are in range.
- *
- * If EIGEN_INTERNAL_DEBUGGING is defined, an assertion will be made, making this
- * function equivalent to \link operator[](Index) \endlink.
- *
- * \sa operator[](Index), coeff(Index) const, coeffRef(Index,Index)
- */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE Scalar&
- coeffRef(Index index)
- {
- EIGEN_STATIC_ASSERT(internal::evaluator<Derived>::Flags & LinearAccessBit,
- THIS_COEFFICIENT_ACCESSOR_TAKING_ONE_ACCESS_IS_ONLY_FOR_EXPRESSIONS_ALLOWING_LINEAR_ACCESS)
- eigen_internal_assert(index >= 0 && index < size());
- return internal::evaluator<Derived>(derived()).coeffRef(index);
- }
- /** \returns a reference to the coefficient at given index.
- *
- * This method is allowed only for vector expressions, and for matrix expressions having the LinearAccessBit.
- *
- * \sa operator[](Index) const, operator()(Index,Index), x(), y(), z(), w()
- */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE Scalar&
- operator[](Index index)
- {
- EIGEN_STATIC_ASSERT(Derived::IsVectorAtCompileTime,
- THE_BRACKET_OPERATOR_IS_ONLY_FOR_VECTORS__USE_THE_PARENTHESIS_OPERATOR_INSTEAD)
- eigen_assert(index >= 0 && index < size());
- return coeffRef(index);
- }
- /** \returns a reference to the coefficient at given index.
- *
- * This is synonymous to operator[](Index).
- *
- * This method is allowed only for vector expressions, and for matrix expressions having the LinearAccessBit.
- *
- * \sa operator[](Index) const, operator()(Index,Index), x(), y(), z(), w()
- */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE Scalar&
- operator()(Index index)
- {
- eigen_assert(index >= 0 && index < size());
- return coeffRef(index);
- }
- /** equivalent to operator[](0). */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE Scalar&
- x() { return (*this)[0]; }
- /** equivalent to operator[](1). */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE Scalar&
- y()
- {
- EIGEN_STATIC_ASSERT(Derived::SizeAtCompileTime==-1 || Derived::SizeAtCompileTime>=2, OUT_OF_RANGE_ACCESS);
- return (*this)[1];
- }
- /** equivalent to operator[](2). */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE Scalar&
- z()
- {
- EIGEN_STATIC_ASSERT(Derived::SizeAtCompileTime==-1 || Derived::SizeAtCompileTime>=3, OUT_OF_RANGE_ACCESS);
- return (*this)[2];
- }
- /** equivalent to operator[](3). */
- EIGEN_DEVICE_FUNC
- EIGEN_STRONG_INLINE Scalar&
- w()
- {
- EIGEN_STATIC_ASSERT(Derived::SizeAtCompileTime==-1 || Derived::SizeAtCompileTime>=4, OUT_OF_RANGE_ACCESS);
- return (*this)[3];
- }
- };
- /** \brief Base class providing direct read-only coefficient access to matrices and arrays.
- * \ingroup Core_Module
- * \tparam Derived Type of the derived class
- * \tparam #DirectAccessors Constant indicating direct access
- *
- * This class defines functions to work with strides which can be used to access entries directly. This class
- * inherits DenseCoeffsBase<Derived, ReadOnlyAccessors> which defines functions to access entries read-only using
- * \c operator() .
- *
- * \sa \blank \ref TopicClassHierarchy
- */
- template<typename Derived>
- class DenseCoeffsBase<Derived, DirectAccessors> : public DenseCoeffsBase<Derived, ReadOnlyAccessors>
- {
- public:
- typedef DenseCoeffsBase<Derived, ReadOnlyAccessors> Base;
- typedef typename internal::traits<Derived>::Scalar Scalar;
- typedef typename NumTraits<Scalar>::Real RealScalar;
- using Base::rows;
- using Base::cols;
- using Base::size;
- using Base::derived;
- /** \returns the pointer increment between two consecutive elements within a slice in the inner direction.
- *
- * \sa outerStride(), rowStride(), colStride()
- */
- EIGEN_DEVICE_FUNC
- inline Index innerStride() const
- {
- return derived().innerStride();
- }
- /** \returns the pointer increment between two consecutive inner slices (for example, between two consecutive columns
- * in a column-major matrix).
- *
- * \sa innerStride(), rowStride(), colStride()
- */
- EIGEN_DEVICE_FUNC
- inline Index outerStride() const
- {
- return derived().outerStride();
- }
- // FIXME shall we remove it ?
- inline Index stride() const
- {
- return Derived::IsVectorAtCompileTime ? innerStride() : outerStride();
- }
- /** \returns the pointer increment between two consecutive rows.
- *
- * \sa innerStride(), outerStride(), colStride()
- */
- EIGEN_DEVICE_FUNC
- inline Index rowStride() const
- {
- return Derived::IsRowMajor ? outerStride() : innerStride();
- }
- /** \returns the pointer increment between two consecutive columns.
- *
- * \sa innerStride(), outerStride(), rowStride()
- */
- EIGEN_DEVICE_FUNC
- inline Index colStride() const
- {
- return Derived::IsRowMajor ? innerStride() : outerStride();
- }
- };
- /** \brief Base class providing direct read/write coefficient access to matrices and arrays.
- * \ingroup Core_Module
- * \tparam Derived Type of the derived class
- * \tparam #DirectWriteAccessors Constant indicating direct access
- *
- * This class defines functions to work with strides which can be used to access entries directly. This class
- * inherits DenseCoeffsBase<Derived, WriteAccessors> which defines functions to access entries read/write using
- * \c operator().
- *
- * \sa \blank \ref TopicClassHierarchy
- */
- template<typename Derived>
- class DenseCoeffsBase<Derived, DirectWriteAccessors>
- : public DenseCoeffsBase<Derived, WriteAccessors>
- {
- public:
- typedef DenseCoeffsBase<Derived, WriteAccessors> Base;
- typedef typename internal::traits<Derived>::Scalar Scalar;
- typedef typename NumTraits<Scalar>::Real RealScalar;
- using Base::rows;
- using Base::cols;
- using Base::size;
- using Base::derived;
- /** \returns the pointer increment between two consecutive elements within a slice in the inner direction.
- *
- * \sa outerStride(), rowStride(), colStride()
- */
- EIGEN_DEVICE_FUNC
- inline Index innerStride() const
- {
- return derived().innerStride();
- }
- /** \returns the pointer increment between two consecutive inner slices (for example, between two consecutive columns
- * in a column-major matrix).
- *
- * \sa innerStride(), rowStride(), colStride()
- */
- EIGEN_DEVICE_FUNC
- inline Index outerStride() const
- {
- return derived().outerStride();
- }
- // FIXME shall we remove it ?
- inline Index stride() const
- {
- return Derived::IsVectorAtCompileTime ? innerStride() : outerStride();
- }
- /** \returns the pointer increment between two consecutive rows.
- *
- * \sa innerStride(), outerStride(), colStride()
- */
- EIGEN_DEVICE_FUNC
- inline Index rowStride() const
- {
- return Derived::IsRowMajor ? outerStride() : innerStride();
- }
- /** \returns the pointer increment between two consecutive columns.
- *
- * \sa innerStride(), outerStride(), rowStride()
- */
- EIGEN_DEVICE_FUNC
- inline Index colStride() const
- {
- return Derived::IsRowMajor ? innerStride() : outerStride();
- }
- };
- namespace internal {
- template<int Alignment, typename Derived, bool JustReturnZero>
- struct first_aligned_impl
- {
- static inline Index run(const Derived&)
- { return 0; }
- };
- template<int Alignment, typename Derived>
- struct first_aligned_impl<Alignment, Derived, false>
- {
- static inline Index run(const Derived& m)
- {
- return internal::first_aligned<Alignment>(m.data(), m.size());
- }
- };
- /** \internal \returns the index of the first element of the array stored by \a m that is properly aligned with respect to \a Alignment for vectorization.
- *
- * \tparam Alignment requested alignment in Bytes.
- *
- * There is also the variant first_aligned(const Scalar*, Integer) defined in Memory.h. See it for more
- * documentation.
- */
- template<int Alignment, typename Derived>
- static inline Index first_aligned(const DenseBase<Derived>& m)
- {
- enum { ReturnZero = (int(evaluator<Derived>::Alignment) >= Alignment) || !(Derived::Flags & DirectAccessBit) };
- return first_aligned_impl<Alignment, Derived, ReturnZero>::run(m.derived());
- }
- template<typename Derived>
- static inline Index first_default_aligned(const DenseBase<Derived>& m)
- {
- typedef typename Derived::Scalar Scalar;
- typedef typename packet_traits<Scalar>::type DefaultPacketType;
- return internal::first_aligned<int(unpacket_traits<DefaultPacketType>::alignment),Derived>(m);
- }
- template<typename Derived, bool HasDirectAccess = has_direct_access<Derived>::ret>
- struct inner_stride_at_compile_time
- {
- enum { ret = traits<Derived>::InnerStrideAtCompileTime };
- };
- template<typename Derived>
- struct inner_stride_at_compile_time<Derived, false>
- {
- enum { ret = 0 };
- };
- template<typename Derived, bool HasDirectAccess = has_direct_access<Derived>::ret>
- struct outer_stride_at_compile_time
- {
- enum { ret = traits<Derived>::OuterStrideAtCompileTime };
- };
- template<typename Derived>
- struct outer_stride_at_compile_time<Derived, false>
- {
- enum { ret = 0 };
- };
- } // end namespace internal
- } // end namespace Eigen
- #endif // EIGEN_DENSECOEFFSBASE_H
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