See the top level README for information on where to find documentation for the raspberry pi and the ARM processor inside. Also find information on how to load and run these programs. This example is for the pi zero, see other directories for other flavors of raspberry pi. Just having some fun. Curious to know how the hardware fpu compared to TestFloat. Extracted only the add function which is easy/boring and it looks good. A NaN is not a fixed bit pattern so not surprising they dont match. I guess I could have said if this is a nan and that is a nan then pass, instead I said if TestFloat says nan, continue; This is derived from some microcontroller example for a cortex-m4 thus the m4 name on some of the functions. Doesnt mean anything more than that.