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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2015 Benoit Steiner <benoit.steiner.goog@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_CXX11_TENSOR_TENSOR_DIMENSION_LIST_H
#define EIGEN_CXX11_TENSOR_TENSOR_DIMENSION_LIST_H
namespace Eigen {
/** \internal
*
* \class TensorDimensionList
* \ingroup CXX11_Tensor_Module
*
* \brief Special case of tensor index list used to list all the dimensions of a tensor of rank n.
*
* \sa Tensor
*/
template <typename Index, std::size_t Rank> struct DimensionList {
const Index operator[] (const Index i) const { return i; }
};
namespace internal {
template<typename Index, std::size_t Rank> struct array_size<DimensionList<Index, Rank> > {
static const size_t value = Rank;
};
template<typename Index, std::size_t Rank> struct array_size<const DimensionList<Index, Rank> > {
static const size_t value = Rank;
};
template<DenseIndex n, typename Index, std::size_t Rank> const Index array_get(DimensionList<Index, Rank>& a) {
return n;
}
template<DenseIndex n, typename Index, std::size_t Rank> const Index array_get(const DimensionList<Index, Rank>& a) {
return n;
}
#if defined(EIGEN_HAS_CONSTEXPR)
template <typename Index, std::size_t Rank>
struct index_known_statically<DimensionList<Index, Rank> > {
constexpr bool operator() (const DenseIndex) const {
return true;
}
};
template <typename Index, std::size_t Rank>
struct index_known_statically<const DimensionList<Index, Rank> > {
constexpr bool operator() (const DenseIndex) const {
return true;
}
};
template <typename Index, std::size_t Rank>
struct all_indices_known_statically<DimensionList<Index, Rank> > {
constexpr bool operator() () const {
return true;
}
};
template <typename Index, std::size_t Rank>
struct all_indices_known_statically<const DimensionList<Index, Rank> > {
constexpr bool operator() () const {
return true;
}
};
template <typename Index, std::size_t Rank>
struct indices_statically_known_to_increase<DimensionList<Index, Rank> > {
constexpr bool operator() () const {
return true;
}
};
template <typename Index, std::size_t Rank>
struct indices_statically_known_to_increase<const DimensionList<Index, Rank> > {
constexpr bool operator() () const {
return true;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_eq<DimensionList<Index, Rank> > {
constexpr bool operator() (const DenseIndex i, const DenseIndex value) const {
return i == value;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_eq<const DimensionList<Index, Rank> > {
constexpr bool operator() (const DenseIndex i, const DenseIndex value) const {
return i == value;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_ne<DimensionList<Index, Rank> > {
constexpr bool operator() (const DenseIndex i, const DenseIndex value) const {
return i != value;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_ne<const DimensionList<Index, Rank> > {
constexpr bool operator() (const DenseIndex i, const DenseIndex value) const {
return i != value;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_gt<DimensionList<Index, Rank> > {
constexpr bool operator() (const DenseIndex i, const DenseIndex value) const {
return i > value;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_gt<const DimensionList<Index, Rank> > {
constexpr bool operator() (const DenseIndex i, const DenseIndex value) const {
return i > value;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_lt<DimensionList<Index, Rank> > {
constexpr bool operator() (const DenseIndex i, const DenseIndex value) const {
return i < value;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_lt<const DimensionList<Index, Rank> > {
constexpr bool operator() (const DenseIndex i, const DenseIndex value) const {
return i < value;
}
};
#else
template <typename Index, std::size_t Rank>
struct index_known_statically<DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() (const DenseIndex) const {
return true;
}
};
template <typename Index, std::size_t Rank>
struct index_known_statically<const DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() (const DenseIndex) const {
return true;
}
};
template <typename Index, std::size_t Rank>
struct all_indices_known_statically<DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() () const {
return true;
}
};
template <typename Index, std::size_t Rank>
struct all_indices_known_statically<const DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() () const {
return true;
}
};
template <typename Index, std::size_t Rank>
struct indices_statically_known_to_increase<DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() () const {
return true;
}
};
template <typename Index, std::size_t Rank>
struct indices_statically_known_to_increase<const DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() () const {
return true;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_eq<DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() (const DenseIndex i, const DenseIndex value) const {
return false;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_eq<const DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() (const DenseIndex i, const DenseIndex value) const {
return false;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_ne<DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() (const DenseIndex i, const DenseIndex value) const {
return false;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_ne<const DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() (const DenseIndex i, const DenseIndex value) const {
return false;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_gt<DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() (const DenseIndex i, const DenseIndex value) const {
return false;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_gt<const DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() (const DenseIndex i, const DenseIndex value) const {
return false;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_lt<DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() (const DenseIndex i, const DenseIndex value) const {
return false;
}
};
template <typename Index, std::size_t Rank>
struct index_statically_lt<const DimensionList<Index, Rank> > {
EIGEN_ALWAYS_INLINE bool operator() (const DenseIndex i, const DenseIndex value) const {
return false;
}
};
#endif
} // end namespace internal
} // end namespace Eigen
#endif // EIGEN_CXX11_TENSOR_TENSOR_DIMENSION_LIST_H
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