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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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2
Eigen/src/Core/ArrayBase.h
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@@ -52,8 +52,6 @@ template<typename Derived> class ArrayBase
typedef typename NumTraits<Scalar>::Real RealScalar;
typedef DenseBase<Derived> Base;
using Base::operator*;
using Base::operator/;
using Base::RowsAtCompileTime;
using Base::ColsAtCompileTime;
using Base::SizeAtCompileTime;

2
Eigen/src/Core/DenseBase.h
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@@ -75,8 +75,6 @@ template<typename Derived> class DenseBase
typedef typename NumTraits<Scalar>::Real RealScalar;
typedef internal::special_scalar_op_base<Derived,Scalar,RealScalar, DenseCoeffsBase<Derived> > Base;
using Base::operator*;
using Base::operator/;
using Base::derived;
using Base::const_cast_derived;
using Base::rows;

2
Eigen/src/Core/MatrixBase.h
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@@ -80,8 +80,6 @@ template<typename Derived> class MatrixBase
using Base::operator-=;
using Base::operator*=;
using Base::operator/=;
using Base::operator*;
using Base::operator/;
typedef typename Base::CoeffReturnType CoeffReturnType;
typedef typename Base::ConstTransposeReturnType ConstTransposeReturnType;

28
Eigen/src/Core/util/XprHelper.h
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@@ -466,34 +466,6 @@ struct special_scalar_op_base : public BaseType
template<typename Derived,typename Scalar,typename OtherScalar, typename BaseType>
struct special_scalar_op_base<Derived,Scalar,OtherScalar,BaseType,true> : public BaseType
{
const CwiseUnaryOp<scalar_multiple2_op<Scalar,OtherScalar>, const Derived>
operator*(const OtherScalar& scalar) const
{
#ifdef EIGEN_SPECIAL_SCALAR_MULTIPLE_PLUGIN
EIGEN_SPECIAL_SCALAR_MULTIPLE_PLUGIN
#endif
return CwiseUnaryOp<scalar_multiple2_op<Scalar,OtherScalar>, const Derived>
(*static_cast<const Derived*>(this), scalar_multiple2_op<Scalar,OtherScalar>(scalar));
}
inline friend const CwiseUnaryOp<scalar_multiple2_op<Scalar,OtherScalar>, const Derived>
operator*(const OtherScalar& scalar, const Derived& matrix)
{
#ifdef EIGEN_SPECIAL_SCALAR_MULTIPLE_PLUGIN
EIGEN_SPECIAL_SCALAR_MULTIPLE_PLUGIN
#endif
return static_cast<const special_scalar_op_base&>(matrix).operator*(scalar);
}
const CwiseUnaryOp<scalar_quotient2_op<Scalar,OtherScalar>, const Derived>
operator/(const OtherScalar& scalar) const
{
#ifdef EIGEN_SPECIAL_SCALAR_MULTIPLE_PLUGIN
EIGEN_SPECIAL_SCALAR_MULTIPLE_PLUGIN
#endif
return CwiseUnaryOp<scalar_quotient2_op<Scalar,OtherScalar>, const Derived>
(*static_cast<const Derived*>(this), scalar_quotient2_op<Scalar,OtherScalar>(scalar));
}
};
template<typename XprType, typename CastType> struct cast_return_type