Significant Changes

We do not support functions for arithmetical operations. We use the template technic to hand over the arguments to the next operation. This template technic do not use unnecessary copying, allocating and freeing of memory and is as fast as simple function callings.
Additionally, we have the advantage that special operator-combinations can internally be optimized. For more details of this point see the section 7 at page .
The member function isprime of the class Natural has a new specification and the function pow has a new convention for the arguments.