i am so done with compilers for today , WHY IS STD::SWAP NOT A CONSTEXPR ASDFOWQWDO (31b5632 7378bcb follow-up grml)

1 files changed, 5 insertions, 4 deletions

diff --git a/src/common/Utilities/advstd.h b/src/common/Utilities/advstd.h
index d9776b02acb..9663bd91992 100644
--- a/src/common/Utilities/advstd.h
+++ b/src/common/Utilities/advstd.h
@@ -112,12 +112,13 @@ namespace advstd
     template <typename T1, typename T2>
     constexpr std::enable_if_t<advstd::is_unsigned_v<T1> && advstd::is_unsigned_v<T2>, std::common_type_t<T1, T2>> gcd(T1 _m, T2 _n)
     {
-        std::common_type_t<T1, T2> n = _n, m = _m;
+        using T = std::common_type_t<T1, T2>;
+        T n=_n, m=_m, o;
         while (n)
         {
-            std::swap(m,n);
-            if (m <= n)
-                n %= m;
+            o = m;
+            m = n;
+            n = o%n;
         }
         return m;
     }