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3.13 Better document the offset mapping

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Luke Parker 2023-07-10 15:02:34 -04:00
parent 677b9b681f
commit df67b7d94c
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3
coins/bitcoin/src/wallet/mod.rs
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@ -114,6 +114,9 @@ impl Scanner {
/// Due to Bitcoin's requirement that points are even, not every offset may be used.
/// If an offset isn't usable, it will be incremented until it is. If this offset is already
/// present, None is returned. Else, Some(offset) will be, with the used offset.
///
/// This means offsets are surjective, not bijective, and the order offsets are registered in
/// may determine the validity of future offsets.
pub fn register_offset(&mut self, mut offset: Scalar) -> Option<Scalar> {
// This loop will terminate as soon as an even point is found, with any point having a ~50%
// chance of being even