MMX builtin functions ?

[Karl Soulabaille]

Hi everybody,

I am trying to wrote a low-pass filter with MMX built-in functions (using 
vector).

I would like to know if there is any good documentation about how to use them 
(or someone can give me an example on an array ?).
I am also looking for MMX right shift function ? It appears that i cannot  
exist (according to 
http://gcc.gnu.org/onlinedocs/gcc-3.2.1/gcc/X86-Built-in-Functions.html#X86%20Built-in%20Functions), 
is it a miss from documentation or an unimplemented function ?

Thank you for answer.

Karl