fix(deep_causality_num): The Display implementation for Quaternion has been refined to correctly handle the signs of its components, producing a more standard and readable mathematical format. All tests pass.

Signed-off-by: Marvin Hansen <[email protected]>

Author: marvin-hansen

deep_causality_num/src/quaternion/display.rs

@@ -6,6 +6,24 @@ use crate::quaternion::Quaternion;
 // Display
 impl<F: Float + Display> Display for Quaternion<F> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{} + {}i + {}j + {}k", self.w, self.x, self.y, self.z)
+        write!(f, "{}", self.w)?;
+        write!(
+            f,
+            " {} {}i",
+            if self.x < F::zero() { "-" } else { "+" },
+            self.x.abs()
+        )?;
+        write!(
+            f,
+            " {} {}j",
+            if self.y < F::zero() { "-" } else { "+" },
+            self.y.abs()
+        )?;
+        write!(
+            f,
+            " {} {}k",
+            if self.z < F::zero() { "-" } else { "+" },
+            self.z.abs()
+        )
     }
 }