If both platforms use IEEE 754 format then you can just reverse the result of unpack "f" to change endianess.

For a portable method of unpacking IEEE 754 floats see Re: Extracting IEEE 754 floating point numbers.

I've been planning to roll this and some other methods into a Pack::Float module. I have the code written but I haven't had time to write a good test suite (the hard part ;-) ).

--
John.