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split sum away from redux and vectorize it.

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(could come back to redux after it has been vectorized,
and could serve as a starting point for that)
also make the abs2 functor vectorizable (for real types).
This commit is contained in:
Benoit Jacob
2008-06-23 10:32:48 +00:00
parent 8a967fb17c
commit dc9206cec5
6 changed files with 301 additions and 39 deletions
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7
Eigen/src/Core/Functors.h
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@@ -173,10 +173,13 @@ struct ei_functor_traits<ei_scalar_abs_op<Scalar> >
template<typename Scalar> struct ei_scalar_abs2_op EIGEN_EMPTY_STRUCT {
typedef typename NumTraits<Scalar>::Real result_type;
inline const result_type operator() (const Scalar& a) const { return ei_abs2(a); }
template<typename PacketScalar>
inline const PacketScalar packetOp(const PacketScalar& a) const
{ return ei_pmul(a,a); }
};
template<typename Scalar>
struct ei_functor_traits<ei_scalar_abs2_op<Scalar> >
{ enum { Cost = NumTraits<Scalar>::MulCost, PacketAccess = false }; };
{ enum { Cost = NumTraits<Scalar>::MulCost, PacketAccess = NumTraits<Scalar>::IsComplex==false && int(ei_packet_traits<Scalar>::size)>1 }; };
/** \internal
* \brief Template functor to compute the conjugate of a complex value
@@ -223,7 +226,7 @@ struct ei_functor_traits<ei_scalar_real_op<Scalar> >
*
* \sa class CwiseUnaryOp, MatrixBase::operator*, MatrixBase::operator/
*/
template<typename Scalar, bool PacketAccess = (int(ei_packet_traits<Scalar>::size)>1?true:false) > struct ei_scalar_multiple_op;
template<typename Scalar, bool PacketAccess = (int(ei_packet_traits<Scalar>::size)>1) > struct ei_scalar_multiple_op;
template<typename Scalar>
struct ei_scalar_multiple_op<Scalar,true> {