Fix: __builtin_expect on MSVC

ashvardanian · ashvardanian · commit d8b17b6a7828 · 2025-08-20T11:38:55.000Z
diff --git a/include/fork_union.hpp b/include/fork_union.hpp
@@ -159,7 +159,7 @@
 
 #define fu_unused_(x) ((void)(x))
 
-#if FU_DETECT_CPP_20_
+#if defined(__GNUC__) || defined(__clang__)
 #define fu_unlikely_(x) __builtin_expect(!!(x), 0)
 #else
 #define fu_unlikely_(x) (x)
