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floating point benchmarks

Hey,

I'm looking for some performance benchmarks for the Tiva with the optional floating point hardware unit.  Ideally, I am looking for something like this link for the TI C6000 series:

http://www.ti.com/lsds/ti/dsp/c6000_dsp/c674x/benchmarks.page

Short of that, what is the range of clock cycles I can typically expect for calculating a single precision floating point multiply and accumulate (MAC?  From this, I can extrapolate out to my required filters.  At this point, I am looking at using the TI supplied compiler and RTOS (if I use an RTOS).

Thanks,

Tobyn