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Diffstat (limited to 'extern/Eigen2/Eigen/src/Core/util/XprHelper.h')
| -rw-r--r-- | extern/Eigen2/Eigen/src/Core/util/XprHelper.h | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/extern/Eigen2/Eigen/src/Core/util/XprHelper.h b/extern/Eigen2/Eigen/src/Core/util/XprHelper.h deleted file mode 100644 index 12d6f9a3a3e..00000000000 --- a/extern/Eigen2/Eigen/src/Core/util/XprHelper.h +++ /dev/null @@ -1,219 +0,0 @@ -// This file is part of Eigen, a lightweight C++ template library -// for linear algebra. Eigen itself is part of the KDE project. -// -// Copyright (C) 2008 Gael Guennebaud <g.gael@free.fr> -// Copyright (C) 2006-2008 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_XPRHELPER_H -#define EIGEN_XPRHELPER_H - -// just a workaround because GCC seems to not really like empty structs -#ifdef __GNUG__ - struct ei_empty_struct{char _ei_dummy_;}; - #define EIGEN_EMPTY_STRUCT : Eigen::ei_empty_struct -#else - #define EIGEN_EMPTY_STRUCT -#endif - -//classes inheriting ei_no_assignment_operator don't generate a default operator=. -class ei_no_assignment_operator -{ - private: - ei_no_assignment_operator& operator=(const ei_no_assignment_operator&); -}; - -/** \internal If the template parameter Value is Dynamic, this class is just a wrapper around an int variable that - * can be accessed using value() and setValue(). - * Otherwise, this class is an empty structure and value() just returns the template parameter Value. - */ -template<int Value> class ei_int_if_dynamic EIGEN_EMPTY_STRUCT -{ - public: - ei_int_if_dynamic() {} - explicit ei_int_if_dynamic(int) {} - static int value() { return Value; } - void setValue(int) {} -}; - -template<> class ei_int_if_dynamic<Dynamic> -{ - int m_value; - ei_int_if_dynamic() {} - public: - explicit ei_int_if_dynamic(int value) : m_value(value) {} - int value() const { return m_value; } - void setValue(int value) { m_value = value; } -}; - -template<typename T> struct ei_functor_traits -{ - enum - { - Cost = 10, - PacketAccess = false - }; -}; - -template<typename T> struct ei_packet_traits -{ - typedef T type; - enum {size=1}; -}; - -template<typename T> struct ei_unpacket_traits -{ - typedef T type; - enum {size=1}; -}; - -template<typename Scalar, int Rows, int Cols, int Options, int MaxRows, int MaxCols> -class ei_compute_matrix_flags -{ - enum { - row_major_bit = Options&RowMajor ? RowMajorBit : 0, - inner_max_size = row_major_bit ? MaxCols : MaxRows, - is_big = inner_max_size == Dynamic, - is_packet_size_multiple = (Cols*Rows) % ei_packet_traits<Scalar>::size == 0, - aligned_bit = ((Options&AutoAlign) && (is_big || is_packet_size_multiple)) ? AlignedBit : 0, - packet_access_bit = ei_packet_traits<Scalar>::size > 1 && aligned_bit ? PacketAccessBit : 0 - }; - - public: - enum { ret = LinearAccessBit | DirectAccessBit | packet_access_bit | row_major_bit | aligned_bit }; -}; - -template<int _Rows, int _Cols> struct ei_size_at_compile_time -{ - enum { ret = (_Rows==Dynamic || _Cols==Dynamic) ? Dynamic : _Rows * _Cols }; -}; - -/* ei_eval : the return type of eval(). For matrices, this is just a const reference - * in order to avoid a useless copy - */ - -template<typename T, int Sparseness = ei_traits<T>::Flags&SparseBit> class ei_eval; - -template<typename T> struct ei_eval<T,IsDense> -{ - typedef Matrix<typename ei_traits<T>::Scalar, - ei_traits<T>::RowsAtCompileTime, - ei_traits<T>::ColsAtCompileTime, - AutoAlign | (ei_traits<T>::Flags&RowMajorBit ? RowMajor : ColMajor), - ei_traits<T>::MaxRowsAtCompileTime, - ei_traits<T>::MaxColsAtCompileTime - > type; -}; - -// for matrices, no need to evaluate, just use a const reference to avoid a useless copy -template<typename _Scalar, int _Rows, int _Cols, int _StorageOrder, int _MaxRows, int _MaxCols> -struct ei_eval<Matrix<_Scalar, _Rows, _Cols, _StorageOrder, _MaxRows, _MaxCols>, IsDense> -{ - typedef const Matrix<_Scalar, _Rows, _Cols, _StorageOrder, _MaxRows, _MaxCols>& type; -}; - -/* ei_plain_matrix_type : the difference from ei_eval is that ei_plain_matrix_type is always a plain matrix type, - * whereas ei_eval is a const reference in the case of a matrix - */ -template<typename T> struct ei_plain_matrix_type -{ - typedef Matrix<typename ei_traits<T>::Scalar, - ei_traits<T>::RowsAtCompileTime, - ei_traits<T>::ColsAtCompileTime, - AutoAlign | (ei_traits<T>::Flags&RowMajorBit ? RowMajor : ColMajor), - ei_traits<T>::MaxRowsAtCompileTime, - ei_traits<T>::MaxColsAtCompileTime - > type; -}; - -/* ei_plain_matrix_type_column_major : same as ei_plain_matrix_type but guaranteed to be column-major - */ -template<typename T> struct ei_plain_matrix_type_column_major -{ - typedef Matrix<typename ei_traits<T>::Scalar, - ei_traits<T>::RowsAtCompileTime, - ei_traits<T>::ColsAtCompileTime, - AutoAlign | ColMajor, - ei_traits<T>::MaxRowsAtCompileTime, - ei_traits<T>::MaxColsAtCompileTime - > type; -}; - -template<typename T> struct ei_must_nest_by_value { enum { ret = false }; }; -template<typename T> struct ei_must_nest_by_value<NestByValue<T> > { enum { ret = true }; }; - -/** \internal Determines how a given expression should be nested into another one. - * For example, when you do a * (b+c), Eigen will determine how the expression b+c should be - * nested into the bigger product expression. The choice is between nesting the expression b+c as-is, or - * evaluating that expression b+c into a temporary variable d, and nest d so that the resulting expression is - * a*d. Evaluating can be beneficial for example if every coefficient access in the resulting expression causes - * many coefficient accesses in the nested expressions -- as is the case with matrix product for example. - * - * \param T the type of the expression being nested - * \param n the number of coefficient accesses in the nested expression for each coefficient access in the bigger expression. - * - * Example. Suppose that a, b, and c are of type Matrix3d. The user forms the expression a*(b+c). - * b+c is an expression "sum of matrices", which we will denote by S. In order to determine how to nest it, - * the Product expression uses: ei_nested<S, 3>::ret, which turns out to be Matrix3d because the internal logic of - * ei_nested determined that in this case it was better to evaluate the expression b+c into a temporary. On the other hand, - * since a is of type Matrix3d, the Product expression nests it as ei_nested<Matrix3d, 3>::ret, which turns out to be - * const Matrix3d&, because the internal logic of ei_nested determined that since a was already a matrix, there was no point - * in copying it into another matrix. - */ -template<typename T, int n=1, typename PlainMatrixType = typename ei_eval<T>::type> struct ei_nested -{ - enum { - CostEval = (n+1) * int(NumTraits<typename ei_traits<T>::Scalar>::ReadCost), - CostNoEval = (n-1) * int(ei_traits<T>::CoeffReadCost) - }; - typedef typename ei_meta_if< - ei_must_nest_by_value<T>::ret, - T, - typename ei_meta_if< - (int(ei_traits<T>::Flags) & EvalBeforeNestingBit) - || ( int(CostEval) <= int(CostNoEval) ), - PlainMatrixType, - const T& - >::ret - >::ret type; -}; - -template<unsigned int Flags> struct ei_are_flags_consistent -{ - enum { ret = !( (Flags&UnitDiagBit && Flags&ZeroDiagBit) ) - }; -}; - -/** \internal Gives the type of a sub-matrix or sub-vector of a matrix of type \a ExpressionType and size \a Size - * TODO: could be a good idea to define a big ReturnType struct ?? - */ -template<typename ExpressionType, int RowsOrSize=Dynamic, int Cols=Dynamic> struct BlockReturnType { - typedef Block<ExpressionType, (ei_traits<ExpressionType>::RowsAtCompileTime == 1 ? 1 : RowsOrSize), - (ei_traits<ExpressionType>::ColsAtCompileTime == 1 ? 1 : RowsOrSize)> SubVectorType; - typedef Block<ExpressionType, RowsOrSize, Cols> Type; -}; - -template<typename CurrentType, typename NewType> struct ei_cast_return_type -{ - typedef typename ei_meta_if<ei_is_same_type<CurrentType,NewType>::ret,const CurrentType&,NewType>::ret type; -}; - -#endif // EIGEN_XPRHELPER_H |