tree f3f8cfc0b9a5a3a62f2fa8c550f9dd7435740fa8
parent d49eb747325e2745fb3cfa6da9d63ec302b4dc9d
author Holger Hans Peter Freyther <zecke@selfish.org> 1350124734 +0200
committer Holger Hans Peter Freyther <zecke@selfish.org> 1350912238 +0200

si: Partially implement the range encoding for the SI.

I saw the old copy of the "Appendix J" code too late and I have
discovered some quirks and I am more familar with my implementation.
Most noticable 'w' only needs to be as big as the input arfcn but
requires the 'w' to be initialized. The power_of_2 implementation
differs as well (mine matches the output of wirehsark).

The f0 could be chosen in a better way but right now picking
the lower bound is the easiest. It is not clear if to use
modulo if the range is chosen in the middle. This can be improved
in the future. Right now I have no bit fiddling for range128, 256
and 1024 as I was running out of time.