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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12139 6f19259b-4bc3-4df7-8a09-765794883524
38 lines
1.4 KiB
C
38 lines
1.4 KiB
C
/** @file
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Macros to simplify boolean expressions and operations.
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This header is not specified by the C95 standard but is included here for
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operational convenience.
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The macro bool expands to _Bool, as required by the C99 specification.
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This subsequently expands to BOOLEAN, is a UEFI data type which is automatically
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defined correctly for the target CPU architecture.
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The remaining three macros are suitable for use in #if preprocessing
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directives. They are true, which expands to the integer constant 1,
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false, which expands to the integer constant 0, and
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__bool_true_false_are_defined which expands to the integer constant 1.
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A program may undefine and perhaps then redefine the
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macros bool, true, and false.
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Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _STDBOOL_H
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#define _STDBOOL_H
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#include <sys/EfiCdefs.h>
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#define bool _Bool
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#define true 1
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#define false 0
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#define __bool_true_false_are_defined 1
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#endif /* _STDBOOL_H */
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