Harry Lemmens wrote:
The fastest way to do bit reversal in a micro that does not have a specific
instruction (like most DSP's have) is via a lookup table. In your case, this
table would require 256 locations. As far as I know, bit reversal is really only
useful for FFT's during the butterfly addressing, so I guess you need this for a
256 bin FFT.
It's a sensors CRC that has to be revesed if you want to compare it to your own computed one.

Lookup table is the fastest, but not the smallest ;-).

Thanks,

        Georg


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