Even when diving a CCR, the pO2 cannot exceed ambient
pressure. This only makes a difference at shallow depths.
Fix this in the calculation of OTUs and CNS.
This affects some tests that now have slightly different CNS and OTU values.
Suggested-by: Justin Ashworth
Signed-off-by: Robert C. Helling <helling@atdotde.de>
We do some merging in a couple of the other tests as well, but the idea
is to have specific test cases that exercise our merge logic.
This one starts simple. Merge a dive with some valid info with a second
one that has less data filled. And then try it in both possible orders.
It shows a few potential problems.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
