I just ordered one, so we'll see.
That chip is not a true hardware floating point processor but rather just a microcontroller with firmware floating point routines ...
But when they say the chip has "firmware" on it, it sounds like you are right. Still I suppose it might conceivably save having to spend your own program memory implementing this stuff. And maybe it runs concurrently with your own program.
Oh absolutely. I'm sure there are probably speed and memory saving advantages to using this device for FP calculations. It's just that I've never seen a benchmark test published showing a comparison Vs gcc compiled FP calculations as performed on a 16 mhz arduino. Equally impressive is all the other non math functions and features they have added to the package. It's just somewhat puzzling that there hasn't been much first hand experience reported about the product in this forum, as that chip has been avalible for I think a couple of years now, and an earlier version longer yet. Even SparkFun carries it so it's not like there is an availability problem. It would certainly make a nice component to add to a shield along with maybe a RTC and other general purpose devices. Maybe it just needs more or better publicity? Looking forward to your report and impressions on the device once you get a hold of it.