1 files changed, 8 insertions, 0 deletions
diff --git a/src/support/bits.cpp b/src/support/bits.cpp
index 992b97955..e60f2365b 100644
--- a/src/support/bits.cpp
+++ b/src/support/bits.cpp
@@ -152,6 +152,14 @@ template<> int CountLeadingZeroes<uint64_t>(uint64_t v) {
 #endif
 }
 
+template<> int CeilLog2<uint32_t>(uint32_t v) {
+  return 32 - CountLeadingZeroes(v - 1);
+}
+
+template<> int CeilLog2<uint64_t>(uint64_t v) {
+  return 64 - CountLeadingZeroes(v - 1);
+}
+
 uint32_t Log2(uint32_t v) {
   switch (v) {
     default: