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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Rigid Transformations in eigen: discussion thread
- From: Benoit Jacob <jacob.benoit.1@xxxxxxxxx>
- Date: Thu, 17 Sep 2009 12:44:18 -0400
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Last email, I promise :)
2009/9/17 Benoit Jacob <jacob.benoit.1@xxxxxxxxx>:
> Also here we're assuming that quaternions and vector8's have the same
> alignment requirements. That's currently always true. It'll be false
> in the future if a platform has 256 bit packets.
Hm, so this is actually the real argument in favor of my original
suggestion (store a vector8 and reinterpret as quats).
Indeed the alignment for vector8's will always be at least as much as
the alignment for quats.
On the other hand, that's a very abstract debate since for now all
simd is 128 bit :)
Benoit