Thanks. It works fine now. And it really generates the PADDD instruction, rather than emulating, and my cheapo laptop really executes same! The documentation, in http://gcc.gnu.org/onlinedocs/gcc-3.4.0/gcc/X86-Built-in-Functions.html was incorrect. I'm a firm believer in the doctrine of "All persons who wish to complain about XYZ may signify same by raising their hand and saying 'I volunteer to fix it.'" So I'd like to rewrite that section (it's actually scattered into two places -- "X86 builtin functions" and "vector extensions". I have extensive experience with SSE stuff, both writing code and getting into the intrinsics-versus-classes-with-overloaded-operators debates, from my work with the number-crunching in medical ultrasound systems. OK? Bill Ackerman wba@xxxxxxxxxxxx wbackerman@xxxxxxxxx
