| |
I sent this before, but it never made it through. My apologies if this
ends up being posted twice.
On Sun, 12 Nov 2000, Michael J Ash wrote:
> On Sun, 12 Nov 2000, mike mcfarlane wrote:
>
> > Hi
> > What math functions are available under legOS? I can get the usual +-/ and *
> > to work, but not powers or square roots. Are these math functions available
> > and what others e.g. sine, cosine etc?
> > I thought it would be standard C stuff like pow and sqrt, but they don't
> > appear to work and I can't find a header file with any math functions in.
> > Not that I like the stuff or anything ;-)just need to use it.
>
> Most math functions aren't available. They would require so much computing
> power, and so few people would use them, that they probably aren't worth
> the code space in the kernel. You could probably find some sample
> implementations of pow and sqrt floating around and just put them in your
> program. Same for trig functions, I guess. I have a library of fixed-point
> math routines that includes all trig and inverse-trig functions along with
> it. It works great in fixed-point, and could probably be converted to
> floating if that's what you're looking for. If you're interested, just let
> me know, and I'll be happy to send it along.
>
> Hmm, while we're on the subject, is anybody ELSE interested in a library
> of fixed-point math routines? They seem to take up significantly less code
> space than the 2k needed for the floating-point routines, and they're
> probably faster to boot. I use them all over in my program, and I'd be
> more than happy to share.
--
"Say not, 'I have found the truth,' but rather, 'I have found a truth.'
"Say not, 'I have found the path of the soul.' Say rather, 'I have met the
soul walking upon my path.'" -- Khalil Gibran
Mike Ash - <http://www.mikeash.com/>, <mailto:mail@mikeash.com>
|
|
1 Message in This Thread:
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
