What Every Computer Scientist Should Know About Floating-Point Arithmetic is great because it makes people aware of problems with the current system. Adding UNU

What Every Computer Scientist Should Know About Floating-Point Arithmetic is great because it makes people aware of problems with the current system. Adding UNUMs would be suggesting the devil you don't know over the devil you know. However, and I can't remember if it is alreaddy in the book, a section on compensated summation / dot product would give strong time tested tools to attack the problem from within the current framework.