fix naive version implementation

2020-08-04 14:39:19 +02:00 · 2020-08-04 14:39:19 +02:00 · aa5dd60865
commit aa5dd60865
parent 91940e84b1
1 changed files with 2 additions and 2 deletions
--- a/include/rapidjson/internal/clzll.h
+++ b/include/rapidjson/internal/clzll.h
@ -53,10 +53,10 @@ inline uint32_t clzll(uint64_t x) {
    return static_cast<uint32_t>(__builtin_clzll(x));
 #else
    // naive version
-    uint32_t r;
+    uint32_t r = 63;
    while (!(x & (static_cast<uint64_t>(1) << 63))) {
        x <<= 1;
-        ++r;
+        --r;
    }

    return r;