Re: A83: help with math

To: assembly-83@lists.ticalc.org
Subject: Re: A83: help with math
From: Richard Harper Maddox <gte172i@prism.gatech.edu>
Date: Mon, 12 Jun 2000 02:48:18 -0400 (EDT)
In-Reply-To: <20000612004357.27617.qmail@web801.mail.yahoo.com>
Reply-To: assembly-83@lists.ticalc.org



try to think of an approximate solution to the problem that does not use
trigonometric functions.
or use a table.

fp is too slow.

-Harper

On Sun, 11 Jun 2000, John Wyrwas wrote:

> 
> I've been having trouble figuring out how to do the
> following 2 problems without a whole lot of code
> 
> a/tan(b degrees)
> a*tan(b degrees)
> 
> a is -16 to 16    b is 0-90
> (note: could someone explain this to me: i thought it
> wasn't possible to have negative integers in the
> registers but a bunch of stuff i've seen appears
> otherwise, since there also is a "neg" opcode to find
> the negative of a. How is the negative sign stored in
> a 8 bit number???)
> 
> Would constructing a table be the only way?  I don't
> really want to use up that much space if there is an
> approximate i can use, other than using floating point
> numbers (would that be terribly slow???). 
> 
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Follow-Ups:

Re: A83: help with math

From: "ti-83" <ti-83@libertysurf.fr>

References:

A83: help with math

From: John Wyrwas <tankrshr77@yahoo.com>