Pointers to add doulle-float capabilities for the avr target

[Tobias Frost]

Hallo,

I am currently evaluation the feasiblitiy to add (real) 64-doubles to the capabilities of the avr-gcc. The current state is, that the avr-gcc supports floats and alias them to doubles. However, a prospective project demands the resolution (accordung to their research), and therefore the company needing it might sponsor me to implement the support.

However, beside some trivial patches, I am not familiar with gcc hacking. Therefore it is hard for me to estimated how long this will take, but the numbers are cruicial to deside if I get the assignement. 

As far as I dugg into the gcc source, there is a soft-float library which is used widely among non-FPU targets. However, I am currently missing the link, how the target has to be configured to be aware of that. As I am currently stuck with that, I'd appreciate any hint, link, documents etc which might point me into the right direction. 

Thanks,

-- 
coldtobi
http://blog.coldtobi.de

Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! 
Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer