autocommit 2022-01-06 19:08:32 CET

src/fixed.rs

@@ -0,0 +1,35 @@
+use std::fmt::{Debug, Formatter};
+
+#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd)]
+#[repr(transparent)]
+pub struct Fixed(pub i32);
+
+impl Fixed {
+    pub fn from_1616(i: i32) -> Self {
+        Self(i >> 8)
+    }
+}
+
+impl From<f64> for Fixed {
+    fn from(v: f64) -> Self {
+        Self((v * 256.0) as i32)
+    }
+}
+
+impl From<Fixed> for f64 {
+    fn from(v: Fixed) -> Self {
+        v.0 as f64 / 256.0
+    }
+}
+
+impl From<Fixed> for i32 {
+    fn from(f: Fixed) -> Self {
+        f.0 >> 8
+    }
+}
+
+impl Debug for Fixed {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        Debug::fmt(&f64::from(*self), f)
+    }
+}