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Re: [avr-gcc-list] computing sine & cosine
From: |
Richard Urwin |
Subject: |
Re: [avr-gcc-list] computing sine & cosine |
Date: |
Sun, 9 Nov 2003 11:31:00 +0000 |
User-agent: |
KMail/1.5 |
On Sunday 09 Nov 2003 4:56 am, nurdin wrote:
> im beginner on avr,my project needs the avr ability using
> trigonometrical funtion such as sine, cosine, etc. i've read that to use
> trigonometrical function we should use float number,question: 1.how's the
> digital representation of float number in avr?
> 2.how's to check avr's ability in using trigonometrical functions
> (sine,cosine,etc) ?
As a quick answer, you'll be using c, or at least the c library, on an AVR
with large memory. AVRs do not have builtin float hardware, it is all done in
software.
1. IEEE standard representation.
2. write a simple program and compile it. See how big the output file is and
that will tell you how big the flash needs to be.
--
Richard Urwin