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RE: Sine and Cosine Accuracy
- From: "Menezes, Evandro" <evandro dot menezes at amd dot com>
- To: "Scott Robert Ladd" <scott dot ladd at coyotegulch dot com>, "Richard Henderson" <rth at redhat dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Thu, 26 May 2005 18:51:56 -0500
- Subject: RE: Sine and Cosine Accuracy
Scott,
> For a wide variety of applications, the hardware intrinsics
> provide both faster and more accurate results, when compared
> to the library functions.
This is not true. Compare results on an x86 systems with those on an x86_64 or ppc. As I said before, shortcuts were taken in x87 that sacrificed accuracy for the sake of speed initially and later of compatibility.
HTH
--
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Evandro Menezes AMD Austin, TX