Fixup C++ style comments are not allowed in ISO C90 to classic C style.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@78152 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/fixxfdi.c b/lib/fixxfdi.c
index 2a7d208..48bfc3c 100644
--- a/lib/fixxfdi.c
+++ b/lib/fixxfdi.c
@@ -1,28 +1,31 @@
-//===-- fixxfdi.c - Implement __fixxfdi -----------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements __fixxfdi for the compiler_rt library.
-//
-//===----------------------------------------------------------------------===//
+/* ===-- fixxfdi.c - Implement __fixxfdi -----------------------------------===
+ *
+ *      	       The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * This file implements __fixxfdi for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
 
 #if !_ARCH_PPC
 
 #include "int_lib.h"
 
-// Returns: convert a to a signed long long, rounding toward zero.
+/* Returns: convert a to a signed long long, rounding toward zero. */
 
-// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
-//             su_int is a 32 bit integral type
-//             value in long double is representable in di_int (no range checking performed)
+/* Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
+ *             su_int is a 32 bit integral type
+ *             value in long double is representable in di_int (no range checking performed)
+ */
 
-// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
-// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
+/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
+ * 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
+ */
 
 di_int
 __fixxfdi(long double a)