Fix i386 bug

Use std::log2(x) instead of std::log(x)/std::log(2.0) for improved accuracy.
kimwalisch · Nov 12, 2017 · 6c74531 · 6c74531
1 parent a1d3a3b
commit 6c74531
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/test/floorPow2.cpp b/test/floorPow2.cpp
@@ -27,7 +27,7 @@ void check(bool OK)
 
 uint64_t floorPow2_cmath(uint64_t n)
 {
-  return 1ull << (uint64_t) (log((double) n) / log(2.0));
+  return 1ull << (uint64_t) log2(n);
 }
 
 int main()