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Implement generic scalar*expr and expr*scalar operator based on scalar_product_traits.

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This is especially useful for custom scalar types, e.g., to enable float*expr<multi_prec> without conversion.
This commit is contained in:
Gael Guennebaud
2016-06-02 22:16:37 +02:00
parent 8b6f53222b
commit 2c00ac0b53
7 changed files with 46 additions and 53 deletions
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18
Eigen/src/SparseCore/SparseDenseProduct.h
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@@ -72,14 +72,16 @@ struct sparse_time_dense_product_impl<SparseLhsType,DenseRhsType,DenseResType, t
};
// FIXME: what is the purpose of the following specialization? Is it for the BlockedSparse format?
template<typename T1, typename T2/*, int _Options, typename _StrideType*/>
struct scalar_product_traits<T1, Ref<T2/*, _Options, _StrideType*/> >
{
enum {
Defined = 1
};
typedef typename CwiseUnaryOp<scalar_multiple2_op<T1, typename T2::Scalar>, T2>::PlainObject ReturnType;
};
// -> let's disable it for now as it is conflicting with generic scalar*matrix and matrix*scalar operators
// template<typename T1, typename T2/*, int _Options, typename _StrideType*/>
// struct scalar_product_traits<T1, Ref<T2/*, _Options, _StrideType*/> >
// {
// enum {
// Defined = 1
// };
// typedef typename CwiseUnaryOp<scalar_multiple2_op<T1, typename T2::Scalar>, T2>::PlainObject ReturnType;
// };
template<typename SparseLhsType, typename DenseRhsType, typename DenseResType, typename AlphaType>
struct sparse_time_dense_product_impl<SparseLhsType,DenseRhsType,DenseResType, AlphaType, ColMajor, true>
{

3
Eigen/src/SparseCore/SparseMatrixBase.h
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@@ -143,8 +143,7 @@ template<typename Derived> class SparseMatrixBase
{ return *static_cast<Derived*>(const_cast<SparseMatrixBase*>(this)); }
typedef internal::special_scalar_op_base<Derived, Scalar, RealScalar, EigenBase<Derived> > Base;
using Base::operator*;
using Base::operator/;
#endif // not EIGEN_PARSED_BY_DOXYGEN
#define EIGEN_CURRENT_STORAGE_BASE_CLASS Eigen::SparseMatrixBase