Christian Schoenebeck writes: > Es geschah am Friday, 7. April 2006 22:17 als Greg Buchholz schrieb: > > Christian Schoenebeck wrote: > > > b) We wondered [2] what the currently best way is to access single > > > elements of one vector. Currently the only solution we saw is to use a > > > union trick > > > > /* I don't know if this qualifies as good, but here's some things > > I've used before */ > > Oh, it officially qualified as good! We just made some benchmarks > [1] to compare our old union trick vs. your straight forward type > casts and your solutions were always faster, often even quite a > lot. So as we thought, gcc doesn't like that union thing very much. It's not legal C, though. The _mm_load, _mm_set, and _mm_store operations are provided to do the conversions. Andrew.
