Sine and Cosine Accuracy

[Vincent Lefevre]

On 2005-05-26 16:33:00 -0500, Menezes, Evandro wrote:
> Keep in mind that x87 transcendentals are not the most accurate
> around, but all x86 processors from any manufacturer produce roughly
> the same results for any argument as the 8087 did way back when,
> even if the result is hundreds of ulps off...

BTW, a few years ago, I heard that some manufacturer had an
x86-compatible processor with math functions that were (slightly)
more accurate than Intel's, and users complained because they
didn't get the same results as with Intel processors, and thought
that the non-Intel one was buggy.

-- 
Vincent Lefèvre <vincent@vinc17.org> - Web: <http://www.vinc17.org/>
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Work: CR INRIA - computer arithmetic / SPACES project at LORIA