This is a draft of a book about selected algorithms. The audience in mind are programmers who are
interested in the treated algorithms and actually want to create and understand working and reasonably
optimized code.

The style varies somewhat which I do not consider bad per se: While some topics (as fast Fourier
transforms) need a clear and explicit introduction others (like the bit wizardry chapter) seem to be best
presented by basically showing the code with just a few comments.

The pseudo language Sprache is used when I see a clear advantage to do so, mainly when the corresponding
C++ does not appear to be self explanatory. Larger pieces of code are presented in C++. C programmers
do not need to be shocked by the `++' as only a rather minimal set of the C++ features is used. Some
of the code, especially in part 3 (Arithmetical algorithms), is given in the pari/gp language as the use of
other languages would likely bury the idea in technicalities.