diff --git a/src/vector.rs b/src/vector.rs
index b71c65e..055c7e0 100644
--- a/src/vector.rs
+++ b/src/vector.rs
@@ -409,6 +409,10 @@ macro_rules! impl_vector_default {
             fn product(self) -> S where S: Mul<Output = S> {
                 fold_array!(mul, { $(self.$field),+ })
             }
+
+            fn is_finite(&self) -> bool where S: BaseFloat {
+                $(self.$field.is_finite())&&+
+            }
         }
 
         impl<S: BaseNum> Zero for $VectorN<S> {