[PATCH] PowerPC - check for finite and Infinity parameters in IBM Long Double 128 fmal().

[Jakub Jelinek]

On Wed, Sep 07, 2011 at 10:49:27AM -0500, Ryan S. Arnold wrote:
> On Tue, Aug 23, 2011 at 6:40 AM, Dave Flaherty
> <flaherty@linux.vnet.ibm.com> wrote:
> > Check for finite/infinity parms in IBM Long Double 128 fmal( )
> >
> > This patch addresses some IBM Long Double 128 fmal () test-ldouble.out
> > and test-ildoubl.out failures.  If the ‘x’ and ‘y’ parameters are
> > finite values and ‘z’ is infinity, the result of fmal () should be ‘z’
> > not NaN.
> >
> > This patch is checked into ibm/2.13/master and can be
> > cherry-picked from commit 9cb11a4f1e562490f02ef634946ec015bf6e75e4
> >
> >
> > 2011-08-18  David Flaherty  <flaherty@linux.vnet.ibm.com>
> >
> > Â  Â  Â  Â * sysdeps/ieee754/ldbl-128ibm/s_fmal.c: New file which checks
> > Â  Â  Â  Â for finite and infinity parameters.
> 
> Ack!
> 
> Please consider committing this patch. I've been running with it in my
> ibm/2.13 branch for a few weeks with no problems.

Well, all the patch does is work around a testsuite failure, the double
double fmal still doesn't do what fmal is supposed to do (though, the
question is what exactly it should do with the weirdo floating point format,
as the precision is variable).
That said, I guess the patch is a (tiny) improvement on what glibc does
right now.

	Jakub