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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2014 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_TRAITS_H
#define EIGEN_CXX11_TENSOR_TENSOR_TRAITS_H
namespace Eigen {
namespace internal {
template<typename Scalar, int Options>
class compute_tensor_flags
{
enum {
is_dynamic_size_storage = 1,
aligned_bit =
(
((Options&DontAlign)==0) && (
#if EIGEN_ALIGN_STATICALLY
(!is_dynamic_size_storage)
#else
0
#endif
||
#if EIGEN_ALIGN
is_dynamic_size_storage
#else
0
#endif
)
) ? AlignedBit : 0,
packet_access_bit = packet_traits<Scalar>::Vectorizable && aligned_bit ? PacketAccessBit : 0
};
public:
enum { ret = packet_access_bit | aligned_bit};
};
template<typename Scalar_, std::size_t NumIndices_, int Options_>
struct traits<Tensor<Scalar_, NumIndices_, Options_> >
{
typedef Scalar_ Scalar;
typedef Dense StorageKind;
typedef DenseIndex Index;
enum {
Options = Options_,
Flags = compute_tensor_flags<Scalar_, Options_>::ret | LvalueBit,
};
};
template<typename Scalar_, typename Dimensions, int Options_>
struct traits<TensorFixedSize<Scalar_, Dimensions, Options_> >
{
typedef Scalar_ Scalar;
typedef Dense StorageKind;
typedef DenseIndex Index;
enum {
Options = Options_,
Flags = compute_tensor_flags<Scalar_, Options_>::ret | LvalueBit,
};
};
template<typename PlainObjectType, int Options_>
struct traits<TensorMap<PlainObjectType, Options_> >
: public traits<PlainObjectType>
{
typedef traits<PlainObjectType> BaseTraits;
typedef typename BaseTraits::Scalar Scalar;
typedef typename BaseTraits::StorageKind StorageKind;
typedef typename BaseTraits::Index Index;
enum {
Options = Options_,
Flags = ((BaseTraits::Flags | LvalueBit) & ~AlignedBit) | (Options&Aligned ? AlignedBit : 0),
};
};
template<typename PlainObjectType>
struct traits<TensorRef<PlainObjectType> >
: public traits<PlainObjectType>
{
typedef traits<PlainObjectType> BaseTraits;
typedef typename BaseTraits::Scalar Scalar;
typedef typename BaseTraits::StorageKind StorageKind;
typedef typename BaseTraits::Index Index;
enum {
Options = BaseTraits::Options,
Flags = ((BaseTraits::Flags | LvalueBit) & ~AlignedBit) | (Options&Aligned ? AlignedBit : 0),
};
};
template<typename _Scalar, std::size_t NumIndices_, int Options>
struct eval<Tensor<_Scalar, NumIndices_, Options>, Eigen::Dense>
{
typedef const Tensor<_Scalar, NumIndices_, Options>& type;
};
template<typename _Scalar, std::size_t NumIndices_, int Options>
struct eval<const Tensor<_Scalar, NumIndices_, Options>, Eigen::Dense>
{
typedef const Tensor<_Scalar, NumIndices_, Options>& type;
};
template<typename Scalar_, typename Dimensions, int Options>
struct eval<TensorFixedSize<Scalar_, Dimensions, Options>, Eigen::Dense>
{
typedef const TensorFixedSize<Scalar_, Dimensions, Options>& type;
};
template<typename Scalar_, typename Dimensions, int Options>
struct eval<const TensorFixedSize<Scalar_, Dimensions, Options>, Eigen::Dense>
{
typedef const TensorFixedSize<Scalar_, Dimensions, Options>& type;
};
template<typename PlainObjectType, int Options>
struct eval<TensorMap<PlainObjectType, Options>, Eigen::Dense>
{
typedef const TensorMap<PlainObjectType, Options>& type;
};
template<typename PlainObjectType, int Options>
struct eval<const TensorMap<PlainObjectType, Options>, Eigen::Dense>
{
typedef const TensorMap<PlainObjectType, Options>& type;
};
template<typename PlainObjectType>
struct eval<TensorRef<PlainObjectType>, Eigen::Dense>
{
typedef const TensorRef<PlainObjectType>& type;
};
template<typename PlainObjectType>
struct eval<const TensorRef<PlainObjectType>, Eigen::Dense>
{
typedef const TensorRef<PlainObjectType>& type;
};
template <typename Scalar_, std::size_t NumIndices_, int Options_>
struct nested<Tensor<Scalar_, NumIndices_, Options_>, 1, typename eval<Tensor<Scalar_, NumIndices_, Options_> >::type>
{
typedef const Tensor<Scalar_, NumIndices_, Options_>& type;
};
template <typename Scalar_, std::size_t NumIndices_, int Options_>
struct nested<const Tensor<Scalar_, NumIndices_, Options_>, 1, typename eval<const Tensor<Scalar_, NumIndices_, Options_> >::type>
{
typedef const Tensor<Scalar_, NumIndices_, Options_>& type;
};
template <typename Scalar_, typename Dimensions, int Options>
struct nested<TensorFixedSize<Scalar_, Dimensions, Options>, 1, typename eval<TensorFixedSize<Scalar_, Dimensions, Options> >::type>
{
typedef const TensorFixedSize<Scalar_, Dimensions, Options>& type;
};
template <typename Scalar_, typename Dimensions, int Options>
struct nested<const TensorFixedSize<Scalar_, Dimensions, Options>, 1, typename eval<const TensorFixedSize<Scalar_, Dimensions, Options> >::type>
{
typedef const TensorFixedSize<Scalar_, Dimensions, Options>& type;
};
template <typename PlainObjectType, int Options>
struct nested<TensorMap<PlainObjectType, Options>, 1, typename eval<TensorMap<PlainObjectType, Options> >::type>
{
typedef const TensorMap<PlainObjectType, Options>& type;
};
template <typename PlainObjectType, int Options>
struct nested<const TensorMap<PlainObjectType, Options>, 1, typename eval<TensorMap<PlainObjectType, Options> >::type>
{
typedef const TensorMap<PlainObjectType, Options>& type;
};
template <typename PlainObjectType>
struct nested<TensorRef<PlainObjectType>, 1, typename eval<TensorRef<PlainObjectType> >::type>
{
typedef const TensorRef<PlainObjectType>& type;
};
template <typename PlainObjectType>
struct nested<const TensorRef<PlainObjectType>, 1, typename eval<TensorRef<PlainObjectType> >::type>
{
typedef const TensorRef<PlainObjectType>& type;
};
} // end namespace internal
} // end namespace Eigen
#endif // EIGEN_CXX11_TENSOR_TENSOR_TRAITS_H
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