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add vectorization of sqrt for float

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This commit is contained in:
Gael Guennebaud
2009-03-27 14:41:46 +00:00
parent 3499f6eccd
commit 49fc1e3e84
6 changed files with 29 additions and 12 deletions
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8
Eigen/src/Array/Functors.h
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@@ -58,10 +58,16 @@ struct ei_functor_traits<ei_scalar_add_op<Scalar> >
*/
template<typename Scalar> struct ei_scalar_sqrt_op EIGEN_EMPTY_STRUCT {
inline const Scalar operator() (const Scalar& a) const { return ei_sqrt(a); }
typedef typename ei_packet_traits<Scalar>::type Packet;
inline Packet packetOp(const Packet& a) const { return ei_psqrt(a); }
};
template<typename Scalar>
struct ei_functor_traits<ei_scalar_sqrt_op<Scalar> >
{ enum { Cost = 5 * NumTraits<Scalar>::MulCost, PacketAccess = false }; };
{ enum {
Cost = 5 * NumTraits<Scalar>::MulCost,
PacketAccess = ei_packet_traits<Scalar>::HasSqrt
};
};
/** \internal
*