feat(3rdparty): add eigen and ceres
This commit is contained in:
John Zhao
754
3rdparty/eigen3/Eigen/src/Core/DenseCoeffsBase.h
vendored
Normal file
754
3rdparty/eigen3/Eigen/src/Core/DenseCoeffsBase.h
vendored
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@@ -0,0 +1,754 @@
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// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2006-2010 Benoit Jacob <jacob.benoit.1@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef EIGEN_DENSECOEFFSBASE_H
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#define EIGEN_DENSECOEFFSBASE_H
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namespace Eigen {
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namespace internal {
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template<typename T> struct add_const_on_value_type_if_arithmetic
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{
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typedef typename conditional<is_arithmetic<T>::value, T, typename add_const_on_value_type<T>::type>::type type;
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};
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}
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/** \brief Base class providing read-only coefficient access to matrices and arrays.
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* \ingroup Core_Module
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* \tparam Derived Type of the derived class
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* \tparam #ReadOnlyAccessors Constant indicating read-only access
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*
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* This class defines the \c operator() \c const function and friends, which can be used to read specific
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* entries of a matrix or array.
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*
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* \sa DenseCoeffsBase<Derived, WriteAccessors>, DenseCoeffsBase<Derived, DirectAccessors>,
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* \ref TopicClassHierarchy
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*/
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template<typename Derived>
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class DenseCoeffsBase<Derived,ReadOnlyAccessors> : public EigenBase<Derived>
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{
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public:
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typedef typename internal::traits<Derived>::StorageKind StorageKind;
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typedef typename internal::traits<Derived>::Index Index;
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typedef typename internal::traits<Derived>::Scalar Scalar;
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typedef typename internal::packet_traits<Scalar>::type PacketScalar;
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// Explanation for this CoeffReturnType typedef.
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// - This is the return type of the coeff() method.
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// - The LvalueBit means exactly that we can offer a coeffRef() method, which means exactly that we can get references
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// to coeffs, which means exactly that we can have coeff() return a const reference (as opposed to returning a value).
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// - The is_artihmetic check is required since "const int", "const double", etc. will cause warnings on some systems
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// while the declaration of "const T", where T is a non arithmetic type does not. Always returning "const Scalar&" is
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// not possible, since the underlying expressions might not offer a valid address the reference could be referring to.
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typedef typename internal::conditional<bool(internal::traits<Derived>::Flags&LvalueBit),
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const Scalar&,
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typename internal::conditional<internal::is_arithmetic<Scalar>::value, Scalar, const Scalar>::type
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>::type CoeffReturnType;
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typedef typename internal::add_const_on_value_type_if_arithmetic<
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typename internal::packet_traits<Scalar>::type
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>::type PacketReturnType;
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typedef EigenBase<Derived> Base;
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using Base::rows;
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using Base::cols;
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using Base::size;
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using Base::derived;
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EIGEN_STRONG_INLINE Index rowIndexByOuterInner(Index outer, Index inner) const
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{
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return int(Derived::RowsAtCompileTime) == 1 ? 0
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: int(Derived::ColsAtCompileTime) == 1 ? inner
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: int(Derived::Flags)&RowMajorBit ? outer
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: inner;
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}
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EIGEN_STRONG_INLINE Index colIndexByOuterInner(Index outer, Index inner) const
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{
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return int(Derived::ColsAtCompileTime) == 1 ? 0
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: int(Derived::RowsAtCompileTime) == 1 ? inner
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: int(Derived::Flags)&RowMajorBit ? inner
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: outer;
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}
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/** Short version: don't use this function, use
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* \link operator()(Index,Index) const \endlink instead.
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*
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* Long version: this function is similar to
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* \link operator()(Index,Index) const \endlink, but without the assertion.
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* Use this for limiting the performance cost of debugging code when doing
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* repeated coefficient access. Only use this when it is guaranteed that the
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* parameters \a row and \a col are in range.
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*
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* If EIGEN_INTERNAL_DEBUGGING is defined, an assertion will be made, making this
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* function equivalent to \link operator()(Index,Index) const \endlink.
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*
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* \sa operator()(Index,Index) const, coeffRef(Index,Index), coeff(Index) const
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*/
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EIGEN_STRONG_INLINE CoeffReturnType coeff(Index row, Index col) const
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{
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eigen_internal_assert(row >= 0 && row < rows()
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&& col >= 0 && col < cols());
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return derived().coeff(row, col);
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}
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EIGEN_STRONG_INLINE CoeffReturnType coeffByOuterInner(Index outer, Index inner) const
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{
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return coeff(rowIndexByOuterInner(outer, inner),
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colIndexByOuterInner(outer, inner));
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}
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/** \returns the coefficient at given the given row and column.
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*
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* \sa operator()(Index,Index), operator[](Index)
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*/
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EIGEN_STRONG_INLINE CoeffReturnType operator()(Index row, Index col) const
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{
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eigen_assert(row >= 0 && row < rows()
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&& col >= 0 && col < cols());
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return derived().coeff(row, col);
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}
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/** Short version: don't use this function, use
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* \link operator[](Index) const \endlink instead.
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*
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* Long version: this function is similar to
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* \link operator[](Index) const \endlink, but without the assertion.
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* Use this for limiting the performance cost of debugging code when doing
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* repeated coefficient access. Only use this when it is guaranteed that the
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* parameter \a index is in range.
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*
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* If EIGEN_INTERNAL_DEBUGGING is defined, an assertion will be made, making this
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* function equivalent to \link operator[](Index) const \endlink.
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*
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* \sa operator[](Index) const, coeffRef(Index), coeff(Index,Index) const
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*/
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EIGEN_STRONG_INLINE CoeffReturnType
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coeff(Index index) const
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{
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eigen_internal_assert(index >= 0 && index < size());
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return derived().coeff(index);
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}
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/** \returns the coefficient at given index.
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*
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* This method is allowed only for vector expressions, and for matrix expressions having the LinearAccessBit.
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*
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* \sa operator[](Index), operator()(Index,Index) const, x() const, y() const,
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* z() const, w() const
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*/
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EIGEN_STRONG_INLINE CoeffReturnType
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operator[](Index index) const
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{
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#ifndef EIGEN2_SUPPORT
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EIGEN_STATIC_ASSERT(Derived::IsVectorAtCompileTime,
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THE_BRACKET_OPERATOR_IS_ONLY_FOR_VECTORS__USE_THE_PARENTHESIS_OPERATOR_INSTEAD)
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#endif
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eigen_assert(index >= 0 && index < size());
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return derived().coeff(index);
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}
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/** \returns the coefficient at given index.
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*
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* This is synonymous to operator[](Index) const.
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*
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* This method is allowed only for vector expressions, and for matrix expressions having the LinearAccessBit.
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*
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* \sa operator[](Index), operator()(Index,Index) const, x() const, y() const,
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* z() const, w() const
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*/
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EIGEN_STRONG_INLINE CoeffReturnType
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operator()(Index index) const
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{
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eigen_assert(index >= 0 && index < size());
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return derived().coeff(index);
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}
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/** equivalent to operator[](0). */
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EIGEN_STRONG_INLINE CoeffReturnType
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x() const { return (*this)[0]; }
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/** equivalent to operator[](1). */
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EIGEN_STRONG_INLINE CoeffReturnType
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y() const { return (*this)[1]; }
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/** equivalent to operator[](2). */
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EIGEN_STRONG_INLINE CoeffReturnType
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z() const { return (*this)[2]; }
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/** equivalent to operator[](3). */
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EIGEN_STRONG_INLINE CoeffReturnType
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w() const { return (*this)[3]; }
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/** \internal
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* \returns the packet of coefficients starting at the given row and column. It is your responsibility
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* to ensure that a packet really starts there. This method is only available on expressions having the
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* PacketAccessBit.
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*
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* The \a LoadMode parameter may have the value \a #Aligned or \a #Unaligned. Its effect is to select
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* the appropriate vectorization instruction. Aligned access is faster, but is only possible for packets
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* starting at an address which is a multiple of the packet size.
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*/
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template<int LoadMode>
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EIGEN_STRONG_INLINE PacketReturnType packet(Index row, Index col) const
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{
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eigen_internal_assert(row >= 0 && row < rows()
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&& col >= 0 && col < cols());
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return derived().template packet<LoadMode>(row,col);
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}
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/** \internal */
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template<int LoadMode>
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EIGEN_STRONG_INLINE PacketReturnType packetByOuterInner(Index outer, Index inner) const
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{
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return packet<LoadMode>(rowIndexByOuterInner(outer, inner),
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colIndexByOuterInner(outer, inner));
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}
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/** \internal
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* \returns the packet of coefficients starting at the given index. It is your responsibility
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* to ensure that a packet really starts there. This method is only available on expressions having the
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* PacketAccessBit and the LinearAccessBit.
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*
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* The \a LoadMode parameter may have the value \a #Aligned or \a #Unaligned. Its effect is to select
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* the appropriate vectorization instruction. Aligned access is faster, but is only possible for packets
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* starting at an address which is a multiple of the packet size.
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*/
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template<int LoadMode>
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EIGEN_STRONG_INLINE PacketReturnType packet(Index index) const
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{
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eigen_internal_assert(index >= 0 && index < size());
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return derived().template packet<LoadMode>(index);
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}
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protected:
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// explanation: DenseBase is doing "using ..." on the methods from DenseCoeffsBase.
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// But some methods are only available in the DirectAccess case.
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// So we add dummy methods here with these names, so that "using... " doesn't fail.
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// It's not private so that the child class DenseBase can access them, and it's not public
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// either since it's an implementation detail, so has to be protected.
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void coeffRef();
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void coeffRefByOuterInner();
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void writePacket();
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void writePacketByOuterInner();
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void copyCoeff();
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void copyCoeffByOuterInner();
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void copyPacket();
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void copyPacketByOuterInner();
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void stride();
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void innerStride();
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void outerStride();
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void rowStride();
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void colStride();
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};
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/** \brief Base class providing read/write coefficient access to matrices and arrays.
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* \ingroup Core_Module
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* \tparam Derived Type of the derived class
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* \tparam #WriteAccessors Constant indicating read/write access
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*
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* This class defines the non-const \c operator() function and friends, which can be used to write specific
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* entries of a matrix or array. This class inherits DenseCoeffsBase<Derived, ReadOnlyAccessors> which
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* defines the const variant for reading specific entries.
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*
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* \sa DenseCoeffsBase<Derived, DirectAccessors>, \ref TopicClassHierarchy
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*/
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template<typename Derived>
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class DenseCoeffsBase<Derived, WriteAccessors> : public DenseCoeffsBase<Derived, ReadOnlyAccessors>
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{
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public:
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typedef DenseCoeffsBase<Derived, ReadOnlyAccessors> Base;
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typedef typename internal::traits<Derived>::StorageKind StorageKind;
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typedef typename internal::traits<Derived>::Index Index;
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typedef typename internal::traits<Derived>::Scalar Scalar;
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typedef typename internal::packet_traits<Scalar>::type PacketScalar;
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typedef typename NumTraits<Scalar>::Real RealScalar;
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using Base::coeff;
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using Base::rows;
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using Base::cols;
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using Base::size;
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using Base::derived;
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using Base::rowIndexByOuterInner;
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using Base::colIndexByOuterInner;
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using Base::operator[];
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using Base::operator();
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using Base::x;
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using Base::y;
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using Base::z;
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using Base::w;
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/** Short version: don't use this function, use
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* \link operator()(Index,Index) \endlink instead.
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*
|
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* Long version: this function is similar to
|
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* \link operator()(Index,Index) \endlink, but without the assertion.
|
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* Use this for limiting the performance cost of debugging code when doing
|
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* repeated coefficient access. Only use this when it is guaranteed that the
|
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* parameters \a row and \a col are in range.
|
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*
|
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* If EIGEN_INTERNAL_DEBUGGING is defined, an assertion will be made, making this
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* function equivalent to \link operator()(Index,Index) \endlink.
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*
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* \sa operator()(Index,Index), coeff(Index, Index) const, coeffRef(Index)
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*/
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EIGEN_STRONG_INLINE Scalar& coeffRef(Index row, Index col)
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{
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eigen_internal_assert(row >= 0 && row < rows()
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&& col >= 0 && col < cols());
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return derived().coeffRef(row, col);
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}
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EIGEN_STRONG_INLINE Scalar&
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coeffRefByOuterInner(Index outer, Index inner)
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{
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return coeffRef(rowIndexByOuterInner(outer, inner),
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colIndexByOuterInner(outer, inner));
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}
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/** \returns a reference to the coefficient at given the given row and column.
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*
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* \sa operator[](Index)
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*/
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EIGEN_STRONG_INLINE Scalar&
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operator()(Index row, Index col)
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{
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eigen_assert(row >= 0 && row < rows()
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&& col >= 0 && col < cols());
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return derived().coeffRef(row, col);
|
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}
|
||||
|
||||
|
||||
/** 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_STRONG_INLINE Scalar&
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||||
coeffRef(Index index)
|
||||
{
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||||
eigen_internal_assert(index >= 0 && index < size());
|
||||
return 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_STRONG_INLINE Scalar&
|
||||
operator[](Index index)
|
||||
{
|
||||
#ifndef EIGEN2_SUPPORT
|
||||
EIGEN_STATIC_ASSERT(Derived::IsVectorAtCompileTime,
|
||||
THE_BRACKET_OPERATOR_IS_ONLY_FOR_VECTORS__USE_THE_PARENTHESIS_OPERATOR_INSTEAD)
|
||||
#endif
|
||||
eigen_assert(index >= 0 && index < size());
|
||||
return derived().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_STRONG_INLINE Scalar&
|
||||
operator()(Index index)
|
||||
{
|
||||
eigen_assert(index >= 0 && index < size());
|
||||
return derived().coeffRef(index);
|
||||
}
|
||||
|
||||
/** equivalent to operator[](0). */
|
||||
|
||||
EIGEN_STRONG_INLINE Scalar&
|
||||
x() { return (*this)[0]; }
|
||||
|
||||
/** equivalent to operator[](1). */
|
||||
|
||||
EIGEN_STRONG_INLINE Scalar&
|
||||
y() { return (*this)[1]; }
|
||||
|
||||
/** equivalent to operator[](2). */
|
||||
|
||||
EIGEN_STRONG_INLINE Scalar&
|
||||
z() { return (*this)[2]; }
|
||||
|
||||
/** equivalent to operator[](3). */
|
||||
|
||||
EIGEN_STRONG_INLINE Scalar&
|
||||
w() { return (*this)[3]; }
|
||||
|
||||
/** \internal
|
||||
* Stores the given packet of coefficients, at the given row and column of this expression. 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 StoreMode>
|
||||
EIGEN_STRONG_INLINE void writePacket
|
||||
(Index row, Index col, const typename internal::packet_traits<Scalar>::type& val)
|
||||
{
|
||||
eigen_internal_assert(row >= 0 && row < rows()
|
||||
&& col >= 0 && col < cols());
|
||||
derived().template writePacket<StoreMode>(row,col,val);
|
||||
}
|
||||
|
||||
|
||||
/** \internal */
|
||||
template<int StoreMode>
|
||||
EIGEN_STRONG_INLINE void writePacketByOuterInner
|
||||
(Index outer, Index inner, const typename internal::packet_traits<Scalar>::type& val)
|
||||
{
|
||||
writePacket<StoreMode>(rowIndexByOuterInner(outer, inner),
|
||||
colIndexByOuterInner(outer, inner),
|
||||
val);
|
||||
}
|
||||
|
||||
/** \internal
|
||||
* Stores the given packet of coefficients, at the given index in this expression. 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 StoreMode>
|
||||
EIGEN_STRONG_INLINE void writePacket
|
||||
(Index index, const typename internal::packet_traits<Scalar>::type& val)
|
||||
{
|
||||
eigen_internal_assert(index >= 0 && index < size());
|
||||
derived().template writePacket<StoreMode>(index,val);
|
||||
}
|
||||
|
||||
#ifndef EIGEN_PARSED_BY_DOXYGEN
|
||||
|
||||
/** \internal Copies the coefficient at position (row,col) of other into *this.
|
||||
*
|
||||
* This method is overridden in SwapWrapper, allowing swap() assignments to share 99% of their code
|
||||
* with usual assignments.
|
||||
*
|
||||
* Outside of this internal usage, this method has probably no usefulness. It is hidden in the public API dox.
|
||||
*/
|
||||
|
||||
template<typename OtherDerived>
|
||||
EIGEN_STRONG_INLINE void copyCoeff(Index row, Index col, const DenseBase<OtherDerived>& other)
|
||||
{
|
||||
eigen_internal_assert(row >= 0 && row < rows()
|
||||
&& col >= 0 && col < cols());
|
||||
derived().coeffRef(row, col) = other.derived().coeff(row, col);
|
||||
}
|
||||
|
||||
/** \internal Copies the coefficient at the given index of other into *this.
|
||||
*
|
||||
* This method is overridden in SwapWrapper, allowing swap() assignments to share 99% of their code
|
||||
* with usual assignments.
|
||||
*
|
||||
* Outside of this internal usage, this method has probably no usefulness. It is hidden in the public API dox.
|
||||
*/
|
||||
|
||||
template<typename OtherDerived>
|
||||
EIGEN_STRONG_INLINE void copyCoeff(Index index, const DenseBase<OtherDerived>& other)
|
||||
{
|
||||
eigen_internal_assert(index >= 0 && index < size());
|
||||
derived().coeffRef(index) = other.derived().coeff(index);
|
||||
}
|
||||
|
||||
|
||||
template<typename OtherDerived>
|
||||
EIGEN_STRONG_INLINE void copyCoeffByOuterInner(Index outer, Index inner, const DenseBase<OtherDerived>& other)
|
||||
{
|
||||
const Index row = rowIndexByOuterInner(outer,inner);
|
||||
const Index col = colIndexByOuterInner(outer,inner);
|
||||
// derived() is important here: copyCoeff() may be reimplemented in Derived!
|
||||
derived().copyCoeff(row, col, other);
|
||||
}
|
||||
|
||||
/** \internal Copies the packet at position (row,col) of other into *this.
|
||||
*
|
||||
* This method is overridden in SwapWrapper, allowing swap() assignments to share 99% of their code
|
||||
* with usual assignments.
|
||||
*
|
||||
* Outside of this internal usage, this method has probably no usefulness. It is hidden in the public API dox.
|
||||
*/
|
||||
|
||||
template<typename OtherDerived, int StoreMode, int LoadMode>
|
||||
EIGEN_STRONG_INLINE void copyPacket(Index row, Index col, const DenseBase<OtherDerived>& other)
|
||||
{
|
||||
eigen_internal_assert(row >= 0 && row < rows()
|
||||
&& col >= 0 && col < cols());
|
||||
derived().template writePacket<StoreMode>(row, col,
|
||||
other.derived().template packet<LoadMode>(row, col));
|
||||
}
|
||||
|
||||
/** \internal Copies the packet at the given index of other into *this.
|
||||
*
|
||||
* This method is overridden in SwapWrapper, allowing swap() assignments to share 99% of their code
|
||||
* with usual assignments.
|
||||
*
|
||||
* Outside of this internal usage, this method has probably no usefulness. It is hidden in the public API dox.
|
||||
*/
|
||||
|
||||
template<typename OtherDerived, int StoreMode, int LoadMode>
|
||||
EIGEN_STRONG_INLINE void copyPacket(Index index, const DenseBase<OtherDerived>& other)
|
||||
{
|
||||
eigen_internal_assert(index >= 0 && index < size());
|
||||
derived().template writePacket<StoreMode>(index,
|
||||
other.derived().template packet<LoadMode>(index));
|
||||
}
|
||||
|
||||
/** \internal */
|
||||
template<typename OtherDerived, int StoreMode, int LoadMode>
|
||||
EIGEN_STRONG_INLINE void copyPacketByOuterInner(Index outer, Index inner, const DenseBase<OtherDerived>& other)
|
||||
{
|
||||
const Index row = rowIndexByOuterInner(outer,inner);
|
||||
const Index col = colIndexByOuterInner(outer,inner);
|
||||
// derived() is important here: copyCoeff() may be reimplemented in Derived!
|
||||
derived().template copyPacket< OtherDerived, StoreMode, LoadMode>(row, col, other);
|
||||
}
|
||||
#endif
|
||||
|
||||
};
|
||||
|
||||
/** \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 \ref TopicClassHierarchy
|
||||
*/
|
||||
template<typename Derived>
|
||||
class DenseCoeffsBase<Derived, DirectAccessors> : public DenseCoeffsBase<Derived, ReadOnlyAccessors>
|
||||
{
|
||||
public:
|
||||
|
||||
typedef DenseCoeffsBase<Derived, ReadOnlyAccessors> Base;
|
||||
typedef typename internal::traits<Derived>::Index Index;
|
||||
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()
|
||||
*/
|
||||
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()
|
||||
*/
|
||||
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()
|
||||
*/
|
||||
inline Index rowStride() const
|
||||
{
|
||||
return Derived::IsRowMajor ? outerStride() : innerStride();
|
||||
}
|
||||
|
||||
/** \returns the pointer increment between two consecutive columns.
|
||||
*
|
||||
* \sa innerStride(), outerStride(), rowStride()
|
||||
*/
|
||||
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 \ref TopicClassHierarchy
|
||||
*/
|
||||
template<typename Derived>
|
||||
class DenseCoeffsBase<Derived, DirectWriteAccessors>
|
||||
: public DenseCoeffsBase<Derived, WriteAccessors>
|
||||
{
|
||||
public:
|
||||
|
||||
typedef DenseCoeffsBase<Derived, WriteAccessors> Base;
|
||||
typedef typename internal::traits<Derived>::Index Index;
|
||||
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()
|
||||
*/
|
||||
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()
|
||||
*/
|
||||
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()
|
||||
*/
|
||||
inline Index rowStride() const
|
||||
{
|
||||
return Derived::IsRowMajor ? outerStride() : innerStride();
|
||||
}
|
||||
|
||||
/** \returns the pointer increment between two consecutive columns.
|
||||
*
|
||||
* \sa innerStride(), outerStride(), rowStride()
|
||||
*/
|
||||
inline Index colStride() const
|
||||
{
|
||||
return Derived::IsRowMajor ? innerStride() : outerStride();
|
||||
}
|
||||
};
|
||||
|
||||
namespace internal {
|
||||
|
||||
template<typename Derived, bool JustReturnZero>
|
||||
struct first_aligned_impl
|
||||
{
|
||||
static inline typename Derived::Index run(const Derived&)
|
||||
{ return 0; }
|
||||
};
|
||||
|
||||
template<typename Derived>
|
||||
struct first_aligned_impl<Derived, false>
|
||||
{
|
||||
static inline typename Derived::Index run(const Derived& m)
|
||||
{
|
||||
return internal::first_aligned(&m.const_cast_derived().coeffRef(0,0), m.size());
|
||||
}
|
||||
};
|
||||
|
||||
/** \internal \returns the index of the first element of the array that is well aligned for vectorization.
|
||||
*
|
||||
* There is also the variant first_aligned(const Scalar*, Integer) defined in Memory.h. See it for more
|
||||
* documentation.
|
||||
*/
|
||||
template<typename Derived>
|
||||
static inline typename Derived::Index first_aligned(const Derived& m)
|
||||
{
|
||||
return first_aligned_impl
|
||||
<Derived, (Derived::Flags & AlignedBit) || !(Derived::Flags & DirectAccessBit)>
|
||||
::run(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
|
||||
Reference in New Issue
Block a user