computer + kibo: part 10

crates/brk_core/src/structs/feerate.rs

@@ -1,5 +1,66 @@
+use std::ops::{Add, Div};
+
 use serde::Serialize;
 use zerocopy::{FromBytes, Immutable, IntoBytes, KnownLayout};
 
-#[derive(Debug, Clone, Copy, Serialize, FromBytes, Immutable, IntoBytes, KnownLayout)]
+use super::{Sats, StoredUsize};
+
+#[derive(
+    Debug,
+    Clone,
+    Copy,
+    Serialize,
+    PartialEq,
+    PartialOrd,
+    FromBytes,
+    Immutable,
+    IntoBytes,
+    KnownLayout,
+)]
 pub struct Feerate(f32);
+
+impl From<(Sats, StoredUsize)> for Feerate {
+    fn from((sats, vsize): (Sats, StoredUsize)) -> Self {
+        Self((f64::from(sats) / f64::from(vsize)) as f32)
+    }
+}
+
+impl From<f64> for Feerate {
+    fn from(value: f64) -> Self {
+        Self(value as f32)
+    }
+}
+impl From<Feerate> for f64 {
+    fn from(value: Feerate) -> Self {
+        value.0 as f64
+    }
+}
+
+impl Add for Feerate {
+    type Output = Self;
+    fn add(self, rhs: Self) -> Self::Output {
+        Self(self.0 + rhs.0)
+    }
+}
+
+impl Div<usize> for Feerate {
+    type Output = Self;
+    fn div(self, rhs: usize) -> Self::Output {
+        Self((self.0 as f64 / rhs as f64) as f32)
+    }
+}
+
+impl From<usize> for Feerate {
+    fn from(value: usize) -> Self {
+        Self(value as f32)
+    }
+}
+
+impl Eq for Feerate {}
+
+#[allow(clippy::derive_ord_xor_partial_ord)]
+impl Ord for Feerate {
+    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
+        self.0.partial_cmp(&other.0).unwrap()
+    }
+}