define ffzl utility function

2018-08-25 03:09:09 -04:00
parent f08d4d31db
commit ec78add6ab
2 changed files with 6 additions and 2 deletions
--- a/util.h
+++ b/util.h
@@ -10,6 +10,10 @@
 #define UNUSED __attribute__((unused))
 #define EXPORT __attribute__((visibility("default")))

+static inline int ffzl(long x) {
+    return __builtin_ffsl(~x);
+}
+
 COLD noreturn void fatal_error(const char *s);

 #endif