diff --git a/lib/clzti2.c b/lib/clzti2.c
index b531069..acdf479 100644
--- a/lib/clzti2.c
+++ b/lib/clzti2.c
@@ -1,23 +1,24 @@
-//===-- clzti2.c - Implement __clzti2 -------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements __clzti2 for the compiler_rt library.
-//
-//===----------------------------------------------------------------------===//
+/* ===-- clzti2.c - Implement __clzti2 -------------------------------------===
+ *
+ *      	       The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * This file implements __clzti2 for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
 
 #if __x86_64
 
 #include "int_lib.h"
 
-// Returns: the number of leading 0-bits
+/* Returns: the number of leading 0-bits */
 
-// Precondition: a != 0
+/* Precondition: a != 0 */
 
 si_int
 __clzti2(ti_int a)