[avr-gcc-list] 32 bit double precision

[intiha Ho gai]

Hi,
I am planning to do floating point calculations. I tried to look at
the precision of doulbe on the avr-gcc manual, but other than that it
is 32 bit I couldnt find the number of bits for the mantissa/exponent.
Also, is there a good tutorial on optimizing performance under such
precision constraints ( I know 32 bit are not doing the job for me
directly :( ).

THank you.
Affan