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Re: Trigonometric functions
- From: Carlos O'Donell <carlos at systemhalted dot org>
- To: Mischa Baars <mjbaars1977 at gmail dot com>
- Cc: libc-alpha at sourceware dot org
- Date: Wed, 09 Jan 2013 23:42:12 -0500
- Subject: Re: Trigonometric functions
- References: <5cca9c63.dd7d.13b3d54bf37.Coremail.email@example.com> <50B3CFE8.firstname.lastname@example.org> <50ED6BFB.email@example.com>
On 01/09/2013 08:09 AM, Mischa Baars wrote:
> Thank you for the 2.17 distribution, which is finally compilable
> without any problems. People are now better able to help you!
> I have attached two files.
> The first example was one already placed on the mailing list earlier,
> now again with a few typing errors corrected.
> The second example compensates for the hardware errors as indicated
> in the first example.
> However, only three of the trigonometric functions are included, i.e.
> the ones used in rotations in the two-dimensional or complex plane.
> Should you need any other function, than I hope this example will be
> helpful enough to get you started.
> For processors without transcendental instruction set, I'm currently
> working on an improvement of the functions already included in the
> glibc distribution. I will get back to this.
> I will be happy to answer any of your questions.
If you plan to contribute to glibc please see:
Don't be overwhelmed! There's a lot to learn, but we're happy to
answer any questions on firstname.lastname@example.org.
For performance related issues we are also trying to document
exactly why and what testing was done in order to rationalize
the change e.g. For 2.17: