as an interesting tidbit, gcc now supports using vector (SIMD) types directly as if they were normal C types in a portable way.. I wonder how hard it would be to expose these types to the user in ghc? http://gcc.gnu.org/onlinedocs/gcc-4.0.2/gcc/Vector-Extensions.html things like matricies and complex numbers might be greatly sped up. John -- John Meacham - ⑆repetae.net⑆john⑈