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Refactor TriangularView to handle both dense and sparse objects. Introduce a glu_shape<S1,S2> helper to assemble sparse/dense shapes with triagular/seladjoint views.

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This commit is contained in:
Gael Guennebaud
2014-07-22 11:35:56 +02:00
parent 2a251ffab0
commit 6daa6a0d16
15 changed files with 520 additions and 284 deletions
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14
Eigen/src/Core/util/Constants.h
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@@ -450,13 +450,13 @@ struct MatrixXpr {};
struct ArrayXpr {};
// An evaluator must define its shape. By default, it can be one of the following:
struct DenseShape { static std::string debugName() { return "DenseShape"; } };
struct DiagonalShape { static std::string debugName() { return "DiagonalShape"; } };
struct BandShape { static std::string debugName() { return "BandShape"; } };
struct TriangularShape { static std::string debugName() { return "TriangularShape"; } };
struct SelfAdjointShape { static std::string debugName() { return "SelfAdjointShape"; } };
struct PermutationShape { static std::string debugName() { return "PermutationShape"; } };
struct SparseShape { static std::string debugName() { return "SparseShape"; } };
struct DenseShape { static std::string debugName() { return "DenseShape"; } };
struct DiagonalShape { static std::string debugName() { return "DiagonalShape"; } };
struct BandShape { static std::string debugName() { return "BandShape"; } };
struct TriangularShape { static std::string debugName() { return "TriangularShape"; } };
struct SelfAdjointShape { static std::string debugName() { return "SelfAdjointShape"; } };
struct PermutationShape { static std::string debugName() { return "PermutationShape"; } };
struct SparseShape { static std::string debugName() { return "SparseShape"; } };
} // end namespace Eigen

3
Eigen/src/Core/util/XprHelper.h
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@@ -638,6 +638,9 @@ template<typename T> struct is_diagonal<DiagonalWrapper<T> >
template<typename T, int S> struct is_diagonal<DiagonalMatrix<T,S> >
{ enum { ret = true }; };
template<typename S1, typename S2> struct glue_shapes;
template<> struct glue_shapes<DenseShape,TriangularShape> { typedef TriangularShape type; };
} // end namespace internal
// we require Lhs and Rhs to have the same scalar type. Currently there is no example of a binary functor