1 files changed, 6 insertions, 0 deletions
diff --git a/lib/vector.h b/lib/vector.h
index 72633a8..7d0ee36 100644
--- a/lib/vector.h
+++ b/lib/vector.h
@@ -61,6 +61,12 @@ class vector_t : public std::array<T, q> {
 
       return result;
     }
+
+    inline vector_t<q, T> operator-(const vector_t<q, T>& v) const {
+      vector_t<q, T> diff = *this;
+      diff -= v;
+      return diff;
+    }
 };