Does the Fraunhofer MP3 encoder support "32bit float" input?


I have a question about MP3 encoding from inside Cubase 7.5.

Does the included Fraunhofer MP3 encoder receive and process the full “32 bit float” audio data from Cubase, or is there some bit depth truncation involved? I don’t mean the bit depth of the resulting MP3 file (I have read that the MP3 format doesn’t use a normal bit depth), I mean the bit depth of the audio material which the MP3 encoder is able to work on, before it outputs the resulting MP3 file.

In other words, does the Fraunhofer MP3 encoder (in Cubase 7.5) support “32 bit float” input data?
I suppose yes, but would like some confirmations.