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1 | /** @file\r | |
2 | Macros to simplify boolean expressions and operations.\r | |
3 | \r | |
4 | This header is not specified by the C95 standard but is included here for\r | |
5 | operational convenience.\r | |
6 | \r | |
7 | The macro bool expands to _Bool, as required by the C99 specification.\r | |
8 | This subsequently expands to BOOLEAN, is a UEFI data type which is automatically\r | |
9 | defined correctly for the target CPU architecture.\r | |
10 | \r | |
11 | The remaining three macros are suitable for use in #if preprocessing\r | |
12 | directives. They are true, which expands to the integer constant 1,\r | |
13 | false, which expands to the integer constant 0, and\r | |
14 | __bool_true_false_are_defined which expands to the integer constant 1.\r | |
15 | \r | |
16 | A program may undefine and perhaps then redefine the\r | |
17 | macros bool, true, and false.\r | |
18 | \r | |
19 | Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>\r | |
20 | This program and the accompanying materials are licensed and made available under\r | |
21 | the terms and conditions of the BSD License that accompanies this distribution.\r | |
22 | The full text of the license may be found at\r | |
23 | http://opensource.org/licenses/bsd-license.\r | |
24 | \r | |
25 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
26 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
27 | **/\r | |
28 | #ifndef _STDBOOL_H\r | |
29 | #define _STDBOOL_H\r | |
30 | #include <sys/EfiCdefs.h>\r | |
31 | \r | |
32 | #define bool _Bool\r | |
33 | #define true 1\r | |
34 | #define false 0\r | |
35 | #define __bool_true_false_are_defined 1\r | |
36 | \r | |
37 | #endif /* _STDBOOL_H */\r |