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unsupported/TensorSymmetry: factor out completely from Tensor module

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Remove the symCoeff() method of the the Tensor module and move the
functionality into a new operator() of the symmetry classes. This makes
the Tensor module now completely self-contained without symmetry
support (even though previously it was only a forward declaration and a
otherwise harmless trivial templated method) and also removes the
inconsistency with the rest of eigen w.r.t. the method's naming scheme.
This commit is contained in:
Christian Seiler
2014-06-04 20:44:22 +02:00
parent ea99433523
commit 96cb58fa3b
5 changed files with 32 additions and 21 deletions
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15
unsupported/Eigen/CXX11/src/Tensor/Tensor.h
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@@ -91,9 +91,6 @@ struct tensor_index_linearization_helper<Index, NumIndices, 0, RowMajor>
return std_array_get<RowMajor ? 0 : NumIndices - 1>(indices);
}
};
/* Forward-declaration required for the symmetry support. */
template<typename Tensor_, typename Symmetry_, int Flags = 0> class tensor_symmetry_value_setter;
} // end namespace internal
template<typename Scalar_, std::size_t NumIndices_, int Options_>
@@ -285,18 +282,6 @@ class Tensor
#endif
}
template<typename Symmetry_, typename... IndexTypes>
internal::tensor_symmetry_value_setter<Self, Symmetry_> symCoeff(const Symmetry_& symmetry, Index firstIndex, IndexTypes... otherIndices)
{
return symCoeff(symmetry, std::array<Index, NumIndices>{{firstIndex, otherIndices...}});
}
template<typename Symmetry_, typename... IndexTypes>
internal::tensor_symmetry_value_setter<Self, Symmetry_> symCoeff(const Symmetry_& symmetry, std::array<Index, NumIndices> const& indices)
{
return internal::tensor_symmetry_value_setter<Self, Symmetry_>(*this, symmetry, indices);
}
protected:
bool checkIndexRange(const std::array<Index, NumIndices>& indices) const
{

13
unsupported/Eigen/CXX11/src/TensorSymmetry/DynamicSymmetry.h
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@@ -50,6 +50,19 @@ class DynamicSGroup
inline int globalFlags() const { return m_globalFlags; }
inline std::size_t size() const { return m_elements.size(); }
template<typename Tensor_, typename... IndexTypes>
inline internal::tensor_symmetry_value_setter<Tensor_, DynamicSGroup> operator()(Tensor_& tensor, typename Tensor_::Index firstIndex, IndexTypes... otherIndices) const
{
static_assert(sizeof...(otherIndices) + 1 == Tensor_::NumIndices, "Number of indices used to access a tensor coefficient must be equal to the rank of the tensor.");
return operator()(tensor, std::array<typename Tensor_::Index, Tensor_::NumIndices>{{firstIndex, otherIndices...}});
}
template<typename Tensor_>
inline internal::tensor_symmetry_value_setter<Tensor_, DynamicSGroup> operator()(Tensor_& tensor, std::array<typename Tensor_::Index, Tensor_::NumIndices> const& indices) const
{
return internal::tensor_symmetry_value_setter<Tensor_, DynamicSGroup>(tensor, *this, indices);
}
private:
struct GroupElement {
std::vector<int> representation;

13
unsupported/Eigen/CXX11/src/TensorSymmetry/StaticSymmetry.h
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@@ -212,6 +212,19 @@ class StaticSGroup
return ge::count;
}
constexpr static inline int globalFlags() { return group_elements::global_flags; }
template<typename Tensor_, typename... IndexTypes>
inline internal::tensor_symmetry_value_setter<Tensor_, StaticSGroup<Gen...>> operator()(Tensor_& tensor, typename Tensor_::Index firstIndex, IndexTypes... otherIndices) const
{
static_assert(sizeof...(otherIndices) + 1 == Tensor_::NumIndices, "Number of indices used to access a tensor coefficient must be equal to the rank of the tensor.");
return operator()(tensor, std::array<typename Tensor_::Index, Tensor_::NumIndices>{{firstIndex, otherIndices...}});
}
template<typename Tensor_>
inline internal::tensor_symmetry_value_setter<Tensor_, StaticSGroup<Gen...>> operator()(Tensor_& tensor, std::array<typename Tensor_::Index, Tensor_::NumIndices> const& indices) const
{
return internal::tensor_symmetry_value_setter<Tensor_, StaticSGroup<Gen...>>(tensor, *this, indices);
}
};
} // end namespace Eigen

2
unsupported/Eigen/CXX11/src/TensorSymmetry/Symmetry.h
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@@ -293,7 +293,7 @@ struct tensor_symmetry_calculate_flags
}
};
template<typename Tensor_, typename Symmetry_, int Flags>
template<typename Tensor_, typename Symmetry_, int Flags = 0>
class tensor_symmetry_value_setter
{
public: