Refine code.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10793 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/BaseLib/Ia32/DivS64x64Remainder.c

@@ -1,7 +1,7 @@
 /** @file
   Integer division worker functions for Ia32.
 
-  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution.  The full text of the license may be found at
@@ -42,8 +42,8 @@ InternalMathDivRemS64x64 (
   INT64                             Quot;
 
   Quot = InternalMathDivRemU64x64 (
-           Dividend >= 0 ? Dividend : -Dividend,
-           Divisor >= 0 ? Divisor : -Divisor,
+           (UINT64) (Dividend >= 0 ? Dividend : -Dividend),
+           (UINT64) (Divisor >= 0 ? Divisor : -Divisor),
            (UINT64 *) Remainder
            );
   if (Remainder != NULL && Dividend < 0) {