X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fchain%2Fchaininterface.rs;h=9a45a88ffe407898e1b38ee42f3356856b7f9cd4;hb=10be993f9458ff14c2085b1abe53eceb8870ce6a;hp=83fee4d674d1611e82dccee1e1c674e8fb94f9aa;hpb=38a544eafd51f0446b1bb460a42107d35c740388;p=rust-lightning

diff --git a/lightning/src/chain/chaininterface.rs b/lightning/src/chain/chaininterface.rs
index 83fee4d6..9a45a88f 100644
--- a/lightning/src/chain/chaininterface.rs
+++ b/lightning/src/chain/chaininterface.rs
@@ -23,6 +23,7 @@ pub trait BroadcasterInterface {
 
 /// An enum that represents the speed at which we want a transaction to confirm used for feerate
 /// estimation.
+#[derive(Clone, Copy, PartialEq, Eq)]
 pub enum ConfirmationTarget {
 	/// We are happy with this transaction confirming slowly when feerate drops some.
 	Background,
@@ -40,12 +41,12 @@ pub enum ConfirmationTarget {
 pub trait FeeEstimator {
 	/// Gets estimated satoshis of fee required per 1000 Weight-Units.
 	///
-	/// Must be no smaller than 253 (ie 1 satoshi-per-byte rounded up to ensure later round-downs
-	/// don't put us below 1 satoshi-per-byte).
+	/// Must return a value no smaller than 253 (ie 1 satoshi-per-byte rounded up to ensure later
+	/// round-downs don't put us below 1 satoshi-per-byte).
 	///
-	/// This translates to:
-	///  * satoshis-per-byte * 250
-	///  * ceil(satoshis-per-kbyte / 4)
+	/// This method can be implemented with the following unit conversions:
+	///  * max(satoshis-per-byte * 250, 253)
+	///  * max(satoshis-per-kbyte / 4, 253)
 	fn get_est_sat_per_1000_weight(&self, confirmation_target: ConfirmationTarget) -> u32;
 }