add absolute value MACRO.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11430 6f19259b-4bc3-4df7-8a09-765794883524

diff --git a/ShellPkg/Include/ShellBase.h b/ShellPkg/Include/ShellBase.h
index d005544bcdc734027308c10feefc3aca40503892..bd0462c59c5c6c9b2252fe3604ef7aca2b07a2fb 100644 (file)
--- a/ShellPkg/Include/ShellBase.h
+++ b/ShellPkg/Include/ShellBase.h
@@ -1,7 +1,7 @@
 /** @file\r
   Root include file for Shell Package modules that utilize the SHELL_RETURN type\r
 \r
-  Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>\r
+  Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>\r
   This program and the accompanying materials\r
   are licensed and made available under the terms and conditions of the BSD License\r
   which accompanies this distribution.  The full text of the license may be found at\r
@@ -15,6 +15,8 @@
 #ifndef __SHELL_BASE__\r
 #define __SHELL_BASE__\r
 \r
+#define ABS(a) (a<0)?(-(a)):(a)\r
+\r
 typedef VOID *SHELL_FILE_HANDLE;\r
 \r
 #ifndef SHELL_FREE_NON_NULL\r