tree 28949539404d919e271c55a58fcca1a66f7421b5
parent 2f4186a3d2621b28a638c04ce94afb1189bbc522
author Sylvain Munaut <tnt@246tNt.com> 1640112334 +0100
committer laforge <laforge@osmocom.org> 1641414289 +0000

conv: Fix the traceback for tail biting codes

When picking the end state, looking only at the path metric
is highly suboptimal because in a tail biting code, we _know_ that
whatever treillis path is correct, it must start and end at the same
state. So we only consider path meeting that condition. We know any
path that doesn't isn't the right one. We only fallback to only
path metric if no path met that condition.

Fixes OS#4508

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Change-Id: I87e51d3880c0fe7bf3d6cd08fd46517a424a230c