#endif
}
-static inline int log2i(int x) {
+static inline unsigned log2i(int x) {
assert(x > 0);
return __SIZEOF_INT__ * 8 - __builtin_clz(x) - 1;
return sizeof(unsigned) * 8 - __builtin_clz(x) - 1;
}
+static inline unsigned log2u64(uint64_t x) {
+ assert(x > 0);
+
+#if __SIZEOF_LONG_LONG__ == 8
+ return 64 - __builtin_clzll(x) - 1;
+#else
+#error "Wut?"
+#endif
+}
+
static inline unsigned log2u_round_up(unsigned x) {
assert(x > 0);