DragonFly now has the same math library (libm) as OpenBSD, replacing an earlier combined version of I think what NetBSD and FreeBSD ran. This doesn’t necessarily directly affect you, but it’s work worth doing; matching the underlying frameworks between BSDs helps everyone.
A running description of activity related to DragonFly BSD.
What’s the advantage of this? What does the new one have that the old did not? Is the new system any more locking than the old?
There were apparently a few missing items in the FreeBSD library that the OpenBSD one contains. It’s mentioned more specifically in John Marino’s commits around libm – look for them here:
http://lists.dragonflybsd.org/pipermail/commits/2015-July/date.html