Support for floating point arithmetic and the VHDL-2008's float_pkg by Quartus-II

The only way I could think of would be equavalent to the altera IP cores anyway. So what you really need is Quartus somehow infering the IP using the fp function followed by a shift register. But given how you cannot do this even for an integer "/", you might be waiting a while for float_pkg support. You can always do type converts from this package to SLVs in and out of the alteraFP IP, but again, this is pretty pointless if all you have is FP IP cores.