NOTE: This commit breaks the build, because there was a mistake in an
earlier change of exactly the sort that this is meant to detect! I'm
leaving it broken for illustration.
Test exactly what the geometric sampler returns, because that's what
the downstream callers of it are going to use.
While here, also assert that the geometric sampler returns a positive
integer. (Our geometric distribution is the one suported on {1, 2,
3, ...} that returns the number of trials before the first success,
not the one supported on {0, 1, 2, ...} that returns the number of
failures before the first success.)
This project introduces the prob_distr.c subsystem which implements all the
probability distributions that WTF-PAD needs. It also adds unittests for all of
them.
Code and tests courtesy of Riastradh.
Co-authored-by: Taylor R Campbell <campbell+tor@mumble.net>
Co-authored-by: Mike Perry <mikeperry-git@torproject.org>
