I have a Project where I have to calculate a lot (with float type figures) and fast. Thias was the reason to Switch from a 8 bit to a 32 bit MCU. Now my question: is the FPU in Teensy3.1 always active or do I have to #define something in the program. I saw in the source code some line with #ifdefine __FPU_used? Now I'm not sure if I have to define something to use the FPU in calculations? If somebody has an answer this would be great.