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Re: [PATCH] Update sparc ULPs.
From: "Joseph S. Myers" <joseph@codesourcery.com>
Date: Mon, 19 Nov 2012 16:29:28 +0000
> On Sun, 18 Nov 2012, David Miller wrote:
>
>> But I'll try to take care of both boundary conditions while I'm here.
>> This patch below is what I currently have, although I'm not so sure
>> about the boundary points I picked.
>>
>> I know that the limiting factor is the multiplication of the largest
>> terms that go into the polynomial computation.
>
> For small arguments what's relevant is x - x^3/3 being indistinguishable
> from x (i.e. x^3/3 being less than 0.5ulp of x). For large arguments it's
> pi/2 - 1/x being indistinguishable from pi/2. So the cutoffs you chose
> seem reasonable in both cases.
Thanks Joseph. I'll work through the test cases and post a final
version for review.