[PATCH] math: Order signed zeros in fmin and fmax.

[Wilco Dijkstra]

Hi James,

Does this work on all targets that have hardware fmin/fmax? There are at least
3 different variations of fmin/fmax in the IEEE standard, so I'm wondering whether
they do agree on how to handle signed zeroes... If it works on all modern targets,
that's great, but that's not clear from your description because ISAs typically
follow IEEE specs.

Cheers,
Wilco