common: clang supports __builtin_clz also in non-GNU modes

kasper93 · Jun 5, 2024 · 00cfe1e · 00cfe1e
1 parent 0fd3fe8
commit 00cfe1e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/common/common.c b/common/common.c
@@ -399,7 +399,7 @@ char **mp_dup_str_array(void *tctx, char **s)
 //  mp_log2(32) == 5
 unsigned int mp_log2(uint32_t v)
 {
-#if defined(__GNUC__) && __GNUC__ >= 4
+#if (defined(__GNUC__) && __GNUC__ >= 4) || defined(__clang__)
     return v ? 31 - __builtin_clz(v) : 0;
 #else
     for (int x = 31; x >= 0; x--) {