libatlas3gf-3dnow 3.6.0-24ubuntu1 (i386 binary) in ubuntu lucid

 ATLAS is an approach for the automatic generation and optimization of
 numerical software. Currently ATLAS supplies optimized versions for the
 complete set of linear algebra kernels known as the Basic Linear Algebra
 Subroutines (BLAS), and a subset of the linear algebra routines in the
 LAPACK library.
 .
 These libraries use the 3dnow extensions only available on AMD
 3dnow and later processors. Please note that the floating point
 produced by these extensions is not IEEE compliant.
 .
 On some architectures, multiple binary packages are provided to take
 advantage of certain commonly available processor instruction set
 extensions. The instruction extension set used is indicated in the
 package name, with 'base' denoting no extensions. In general, you
 will obtain the best performance by installing the package with the
 most advanced instruction extension set your machine is capable of
 running.