On 2/6/2020 6:23 AM, Bill Gaylord wrote:
Personally it seems pretty fast only like a max of 9 us for most ops on floats (doubles are a different story.) It can be as low as almost 1 us or as high as 55 us depending on operation.
FPUs in the ESP32 and Cortex-M4F are all single-precision (float); if you ask for double-precision, you don't use the FPU and you get to wait. Also, 9uS is *terrible*, I'll bet that's a transcendental operation running in software and not using the FPU. Cheers, Dana K6JQ _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
