>>>>> "ILT" == Ian Lance Taylor <iant@xxxxxxxxxx> writes: ILT> Ah, sorry, I misunderstand. Or I misthought. Distracted by impending dinner. :-/ ILT> For the Intel intrinsics, use __m64 and friends. ILT> For the __builtin_ia32 functions, it's OK to use __v2df and friends. ILT> I recommend using the Intel intrinsics instead. They are easier to ILT> understand and use correctly. And I conflated the two. I used the functions defined in <x86intrin.h> and friends, but with __v2df and v4sf args and returns. And though of them as two sides of the same coin. Which probably is why I misremembered what I wrote when I replied here. -JimC (waiting on the oven :) -- James Cloos <cloos@xxxxxxxxxxx> OpenPGP: 1024D/ED7DAEA6