If memory serves, the load average calculation was the only use of floating point in the BSD 4.2 kernel. Reworking the algorithm to get 4.2 running on the Natio

If memory serves, the load average calculation was the only use of floating point in the BSD 4.2 kernel. Reworking the algorithm to get 4.2 running on the National 32016 before the floating point co-processor was available was my first time inside the kernel. Fun times.