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Re: [avr-libc-dev] Double precision floating point routines


From: Russell Shaw
Subject: Re: [avr-libc-dev] Double precision floating point routines
Date: Wed, 26 Nov 2003 14:34:58 +1100
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20030311 Debian/1.2.1-10

Martin Cibulski wrote:
Hi,

I just subscribed to the avr-libc-dev mailing list.
As an amateur astronomer I'm building a small controller for the stepper
motors of my telescope mount.
I use the AVR mega128 and my goal is to have all functions in this
controller so that the additional PC is no longer needed for coordinate
transforms or an object database.

For this project I need double precision floating point math on the AVR CPU.
Because the C library cannot handle double precision format I started to
program my own library for this...

IIRC, double is 64-bit and float is 32-bit. Is avr-libc terminology correct?





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