| Re: [eigen] State of eigen support for small integers(16 bit, signed/unsigned) |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] State of eigen support for small integers(16 bit, signed/unsigned)
- From: Benoit Jacob <jacob.benoit.1@xxxxxxxxx>
- Date: Fri, 21 Aug 2009 08:34:04 -0400
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2009/8/21 Gael Guennebaud <gael.guennebaud@xxxxxxxxx>:
> one more information, if you want the coeff wise product of two int16
> returns a int32, you can simply add the specialization:
>
> template<> struct ei_scalar_product_traits<int16,int16> { typedef
> int32 ReturnType; };
>
> Also for the vectorization I think there is no other choice than using
> structs instead of typdefs for the PacketXX SSE types because we need
> to distinguish, e.g.:
>
> ei_padd(Packet4i,Packet4i)
>
> and
>
> ei_padd(Packet8s,Packet8s)
>
> so here Packet4i and Packet8s *must* be different types.
Depends: in the other solution, this is remedied by making ei_padd
template in the scalar type, so the first is the specialization for
int and the second is the specialization for short.
But yes that becomes a little cumbersome, that's what i meant when i
said that if that solution is too cumbersome then prefer the other.
Benoit