Floating point performance on Cortex M3


I am at the moment testing a Cortex M3 (Evaluation Board with Toshiba TMPM330). I am thinking about realising a controller on it in combination with the RTX-RL OS. This requires massive usage of filters as well as differentiation.

Usually, building this thing in university, I can simply use floating points and everything is fine. Due to the fact that the Cortex M3 only emulates floating point operations, I do wonder if this causes massive performance issues and if there are any other limitation. Using it with usually integers or similiar is not really a great alternative.

Has anyone experience and can recommend me ideas? Is it fine if I just use the floating point code, can I avoid some issues by simple adjustments or do I have to code it in fixed point.

Thank you


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