This library has been modified to compile natively on x86-64.

An attempt has been made to adapt the assembly code, but due to unsolved issues with
the fact that shared libraries on x86-64 have to be compiled with PIC, this approach is
not finished.

This code therefore only uses the portable C implementation, which is certainly slower than
the assembly SSE2 that could ideally be used.

It could be said that we trade performance against the possibility to compile on x86-64.

feb, 2012
Matthias P. Braendli, HB9EGM