Functions for computing Gray encoding from/to binary strings.
the string to be evaluated
Gray encoding allows to obtain binary strings not affected by the well-known Hamming cliff problem. With Gray encoding the number of bit differences between any two consecutive values is one, whereas in binary strings this is not always true.
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# Consider a five-bit encoding of values 15 and 16 using the standard # binary coding decimal2binary(15, 5) decimal2binary(16, 5) # Moving from 15 to 16 (or vice versa) all five bits need to be changed, # but using Gray encoding the two binary strings differ by one bit. binary2gray(decimal2binary(15, 5)) binary2gray(decimal2binary(16, 5))
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