diff --git a/libc/src/__support/FPUtil/generic/sqrt.h b/libc/src/__support/FPUtil/generic/sqrt.h
--- a/libc/src/__support/FPUtil/generic/sqrt.h
+++ b/libc/src/__support/FPUtil/generic/sqrt.h
@@ -21,8 +21,6 @@
 
 namespace internal {
 
-template <typename T> static inline int clz(T val);
-
 template <typename T> struct SpecialLongDouble {
   static constexpr bool VALUE = false;
 };
@@ -37,6 +35,7 @@
 // __builtin_clz* rather than using the exactly-sized aliases from stdint.h.
 // This way, we can avoid making any assumptions about integer sizes and let the
 // compiler match for us.
+template <typename T> static inline int clz(T val);
 template <> inline int clz<unsigned int>(unsigned int val) {
   return __builtin_clz(val);
 }