Thanks to Roberto A. Foglietta we have liboil:
Title: liboil.tcz
Description: liboil
Version: 0.3.16
Author: David Schleef
Original-site: http://liboil.freedesktop.org
Copying-policy: BSD like
Size: 384K
Extension_by: Roberto A. Foglietta
Comments: Liboil is a library of simple functions that
are optimized for various CPUs. These functions
are generally loops implementing simple algorithms,
such as converting an array of N integers to
floating-point numbers or multiplying and summing
an array of N numbers. Such functions are candidates
for significant optimization using various techniques,
especially by using extended instructions provided
by modern CPUs (Altivec, MMX, SSE, etc.).
Change-log: 2009/05/04 First version
Current: 2009/05/04 First version