Comments (1)
This array is just a helper for quickly comparing hexadecimal hashes. Index is the value of a xor operation on 4 consecutive bits in a pair of hashes. Value is the number of bits that differ.
For example take a look at the following hashes:
1a2b8c3d4
1a2bfc3d4
The numbers at index 4 are different: 0x8 and 0xf respectively. Their binary values are:
0x8 == 0b1000
0xf == 0b1111
The result of the xor operation will be 0x8 ^ 0xf == 0b0111
which is equal to 7. one_bits[7]
is equal to 3, which is the number of different bits in 0x8
and 0xf
. Hope this helps!
from blockhash-js.
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from blockhash-js.