The floating point unit attached to this page is an ongoing project to adding hardware accelerated floating point capabilities to Nios II. The implementation is rather old so I'll need to update it and add new features. Altera does not support this floating point unit so use it at your own risk.
Division (I recommend updating the hardware file to use the new divider in Quartus II)
Typecasts (unsigned int --> float, int --> float, float --> unsigned int, float --> int)
Logical Operators (>, >=, <, <=, ==, !=)
NOTE: Make sure you use the 8.0 or later Nios II compiler with this hardware
To learn more about getting the compiler to recognize this hardware refer to the readme.txt file in the file YAFPU.zip