Re: [avr-gcc-list] Precision of 64-bit using 32-bit numbers

[E. Weddington]

Ganeriwal Saurabh wrote:

> Hi,
>
> I am working on some applications on Atmel Atmega128 that requires a
> precision of 64-bits. However, the maximum precision provded is 32-bit. I
> tried using doubledouble but it resulted in a compilation error. Is there
> an available library for emulating the 64-bit numerical operations such as
> add, subtract, multiply, divide using 32-bit numbers.
>
>  

Currently there is no abililty to do 64-bit (double) floating point math 
in avr-libc.
Somebody would have to volunteer to add this to avr-libc; contributions 
are welcome.

Eric