utils: use std::copy for pack / unpack

Auterion · Dec 11, 2023 · 619d353 · 619d353
1 parent 528f2c4
commit 619d353
Showing 1 changed file with 7 additions and 9 deletions.
diff --git a/include/mav/utils.h b/include/mav/utils.h
@@ -203,16 +203,14 @@ namespace mav {
     }
 
 
-    template<typename A, typename B>
-    A _packUnpack(B b) {
-        union U {
-            A a;
-            B b;
-        };
-        U u;
-        u.b = b;
-        return u.a;
+    template<typename To, typename From>
+    To _packUnpack(From o) {
+        static_assert(sizeof(To) == sizeof(From), "Cannot pack/unpack different sizes");
+        To result;
+        std::memcpy(&result, &o, sizeof(To));
+        return result;
     }
+
 
     template<typename T>
     T floatUnpack(float f) {