@did-btc1/smt / bitIndex
Function: bitIndex()
> bitIndex(i, key): number
Defined in: utils.ts:49
bitIndex extracts the i-th bit (0 or 1) from a 256-bit key (assuming i in [0..255]). This is used in the compacted-leaf logic and typical SMT insertion/lookup code.
- bytePos = i >>> 3 -> i / 8
- bitPos = 7 - (i & 7) -> offset from the left
Parameters
i
number
key
Uint8Array
Returns
number