Kernel? What kernel? You probably aren't using a separate kernel with an M3, though you might have an RTOS. You'll, as a rule, have the compiler putting the

Kernel? What kernel? You probably aren't using a separate kernel with an M3, though you might have an RTOS. You'll, as a rule, have the compiler putting the floating point emulations in directly. I think the performance hit is only around a factor of 100 or so for an M3 though.