On Wed, Nov 4, 2009 at 12:11 PM, David Cournapeau <[email protected]>wrote:
> On Thu, Nov 5, 2009 at 2:15 AM, Michael Droettboom <[email protected]> > wrote: > > I'm getting the following from r7603 on Solaris Sparc -- somehow related > > to not having a long double version of next after available. I realise > > not everyone has access to (or is dependent on) this platform, so I'm > > willing to help in whatever way I can, I'm just not sure I understand > > the change yet. > > The only way to implement nextafter that I know of requires to know > the exact representation of the floating point number, and long double > is unfortunately platform dependent. > > What is the long double format on solaris sparc ? (big endian I > suppose, but how many bits for the mantissa and exponent ? Does it > follow IEER754 ?) > > Long double on SPARC is quad precision, which I believe *is* in one of the ieee specs. In any case, it has a lot more precision than the extended precision found in Intel derived architectures. Hmm, I wonder what ia64 does? Chuck
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