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diff --git a/StdLib/Include/iso646.h b/StdLib/Include/iso646.h
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+++ b/StdLib/Include/iso646.h
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+/** @file
+  Provides alternative "spellings" for several C operators.
+
+  The header <iso646.h> defines the following eleven macros (on the left) that expand
+  to the corresponding tokens (on the right).
+
+Copyright (c) 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 that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+**/
+#ifndef _ISO646_H
+#define _ISO646_H
+#include  <sys/EfiCdefs.h>
+
+#define and     &&
+#define and_eq  &=
+#define bitand  &
+#define bitor   |
+#define compl   ~
+#define not     !
+#define not_eq  !=
+#define or      ||
+#define or_eq   |=
+#define xor     ^
+#define xor_eq  ^=
+
+#endif  /* _ISO646_H */