Subj : Re: Performance impact of disaligned structures
To   : comp.programming
From : mschaef
Date : Wed Oct 05 2005 09:12 am

In article <W6ydncrq3eGa0d7eRVn-ug@comcast.com>,
Peter Ammon  <gershwin@splintermac.com> wrote:
    ...
>You _must_ make sure that your Altivec data fields are aligned to 16 
>bytes.  The easiest way to do this is to declare them as the first field 
>in the struct, and make sure the struct comes from malloc() 

Does malloc generally make any guarantees about alignment, or is this a 
platform-specific thing?

Thanks,
Mike
-- 
http://www.mschaef.com

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