1 files changed, 9 insertions, 0 deletions
diff --git a/src/f64/dvec2.rs b/src/f64/dvec2.rs
index c20404b..c52356e 100644
--- a/src/f64/dvec2.rs
+++ b/src/f64/dvec2.rs
@@ -264,6 +264,15 @@ impl DVec2 {
         }
     }
 
+    /// Returns a vector with signs of `rhs` and the magnitudes of `self`.
+    #[inline]
+    pub fn copysign(self, rhs: Self) -> Self {
+        Self {
+            x: self.x.copysign(rhs.x),
+            y: self.y.copysign(rhs.y),
+        }
+    }
+
     /// Returns a bitmask with the lowest 2 bits set to the sign bits from the elements of `self`.
     ///
     /// A negative element results in a `1` bit and a positive element in a `0` bit.  Element `x` goes