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Re: Sine and Cosine Accuracy
- From: Scott Robert Ladd <scott dot ladd at coyotegulch dot com>
- To: "Menezes, Evandro" <evandro dot menezes at amd dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Fri, 27 May 2005 17:15:40 -0400
- Subject: Re: Sine and Cosine Accuracy
- References: <84EA05E2CA77634C82730353CBE3A843028F468D@SAUSEXMB1.amd.com>
Evandro,
> Any perceived increase in accuracy in this test comes
> from intermediary calculations being done with 80 bits and
> because the errors in fsin are complementary to those in fcos.
I'm always willing to see my mistakes revealed, if it can be done so
eloquently and politely. Unlike some people in this thread, you've been
both eloquent and polite; thank you.
I still maintain that hardware fsin and fcos are valid and valuable for
certain classes of applications, and that we need better options and
documentation -- both of which I'm more than happy to work on. I look
forward to your future comments.
..Scott