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Add special path for matrix<complex>/real.

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This also fixes underflow issues when scaling complex matrices through complex/complex operator.
This commit is contained in:
Gael Guennebaud
2015-06-26 16:08:15 +02:00
parent e102ddbf1f
commit 98ff17eb9e
6 changed files with 33 additions and 1 deletions
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1
Eigen/src/Core/util/ForwardDeclarations.h
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@@ -213,6 +213,7 @@ template<typename Scalar> struct scalar_identity_op;
template<typename LhsScalar,typename RhsScalar=LhsScalar> struct scalar_product_op;
template<typename LhsScalar,typename RhsScalar> struct scalar_multiple2_op;
template<typename LhsScalar,typename RhsScalar=LhsScalar> struct scalar_quotient_op;
template<typename LhsScalar,typename RhsScalar> struct scalar_quotient2_op;
} // end namespace internal

14
Eigen/src/Core/util/XprHelper.h
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@@ -427,7 +427,9 @@ struct special_scalar_op_base : public DenseCoeffsBase<Derived>
{
// dummy operator* so that the
// "using special_scalar_op_base::operator*" compiles
void operator*() const;
struct dummy {};
void operator*(dummy) const;
void operator/(dummy) const;
};
template<typename Derived,typename Scalar,typename OtherScalar>
@@ -451,6 +453,16 @@ struct special_scalar_op_base<Derived,Scalar,OtherScalar,true> : public DenseCo
#endif
return static_cast<const special_scalar_op_base&>(matrix).operator*(scalar);
}
const CwiseUnaryOp<scalar_quotient2_op<Scalar,OtherScalar>, 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>, Derived>
(*static_cast<const Derived*>(this), scalar_quotient2_op<Scalar,OtherScalar>(scalar));
}
};
template<typename XprType, typename CastType> struct cast_return_type