diff --git a/include/vector/vec.h b/include/vector/vec.h
index dfae2fe..a40c18f 100644
--- a/include/vector/vec.h
+++ b/include/vector/vec.h
@@ -33,6 +33,12 @@ typedef struct {
 #define vec_dot(T, v1, v2) vec_dot_##T(v1, v2)
 #define vec_magnitude(T, v) vec_magnitude_##T(v)
 #define vec_unit(T, v) vec_unit_##T(v)
+#define vec_swap(T, v1, v2)                                                    \
+  {                                                                            \
+    T tmp = v1;                                                                \
+    v1 = v2;                                                                   \
+    v2 = tmp;                                                                  \
+  }
 
 vec2i_t vec_add_vec2i_t(vec2i_t v1, vec2i_t v2);
 vec2i_t vec_sub_vec2i_t(vec2i_t v1, vec2i_t v2);