Patent in case anyone is curious
Looking at the claims, it looks like he's patented an augmented floating point unit (hardware) that does bounded arithmetic. The #1 claim is "A processing device [with a] FPU [and a] bounded floating point unit (BFPU)." All the following claims are "The processing device as recited in claim 1" (e.g. CPU+FPU+BFPU) with subsequent changes.
This may seem odd, but it can be the difference between knowing and unknowing infringement. Knowing infringement results in triple damages.
IANAL — just repeating consistent advice I have received
Reading a patent is more likely to make you not infringe upon it than to make you knowingly infringe upon it.
For people who are writing novel software it can be better to always avoid reading patents, that way they can honestly state they haven't read a specific patent.
Perverse incentives indeed.