Re: [Algorithms] (no subject)

[David B. <db...@bt...>]

Look at fpatan and fsqrt, you should be able to impliment asin,atan and acos
in terms of fpatan... You can get quite a bit more performance over compiler
intrinsics or CRT functions. If you have a restricted input or can overlap
parts.
It may also be possible to use approximations of these functions(eg with
polynomials), depending on your requirments.

David

http://www.dblack.btinternet.co.uk
ICQ #: 24402391
Mobile: (UK) 0778 7836188
----- Original Message -----
From: "Matthew Davies" <MD...@ac...>
To: "Algorithms List (E-mail)" <gda...@li...>
Sent: Thursday, September 28, 2000 2:39 PM
Subject: [Algorithms] (no subject)


> Hi,
>
> I have assembly code versions of sine, cosine and tangent functions but
now
> I need arcsine, arccosine and arctangent functions, some of which are
needed
> in my quaternion code.  Can anyone provide references to how these can be
> implemented on the Pentium processor using the FPU?
>
> Regards,
>
>
> Matt Davies
> Programmer
> Acclaim Studios, Cheltenham
> +44 (0) 1242 533682
> ICQ: 78711743
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