[Bug math/14273] cosh() returns incorrect results

["carlos_odonell at mentor dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=14273

--- Comment #2 from Carlos O'Donell <carlos_odonell at mentor dot com> 2012-06-21 14:37:35 UTC ---
(In reply to comment #1)
> This appears to be specific to the wordsize-64 version of cosh; it's about the
> 64-bit optimizations, not -ffinite-math-only.  A comparison previously using
> 32-bit high parts and low parts, the former having been ANDed to make it the
> high part of the absolute value, now uses the full 64-bit value - a simpler
> comparison, but the ANDing is missing.
> 
> Fixing is simple enough.  Carlos, what do you want to do about this sort of
> regression fix for release branches (2.15 and 2.16), given that testcases for
> it are quite likely to involve ULPs updates for all architectures?

My initial reaction is that changes that require global architecture updates
are not appropriate for stable branches. I say this only because it is a huge
burden to place upon the patch creator to update all of the machine ULPs files.

Is that too conservative?

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