freebsd-src/include/stdbool.h

/*
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2000 Jeroen Ruigrok van der Werven <asmodai@FreeBSD.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef __bool_true_false_are_defined
#define	__bool_true_false_are_defined	1

#ifndef __cplusplus

#define	false	0
#define	true	1

#define	bool	_Bool

#endif /* !__cplusplus */
#endif /* __bool_true_false_are_defined */
Welcome stdbool.h. A header file from the ANSI C99 specification. It defines the boolean values. 2000-09-16 08:28:44 +01:00			`/*`
spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch up to that fact and revert to their recommended match of BSD-2-Clause. Discussed with: pfg MFC After: 3 days Sponsored by: Netflix 2023-05-10 16:40:58 +01:00			`* SPDX-License-Identifier: BSD-2-Clause`
include: General further adoption of SPDX licensing ID tags. Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. 2017-11-25 17:09:43 +00:00			`*`
Welcome stdbool.h. A header file from the ANSI C99 specification. It defines the boolean values. 2000-09-16 08:28:44 +01:00			`* Copyright (c) 2000 Jeroen Ruigrok van der Werven <asmodai@FreeBSD.org>`
			`* All rights reserved.`
			`*`
			`* Redistribution and use in source and binary forms, with or without`
			`* modification, are permitted provided that the following conditions`
			`* are met:`
			`* 1. Redistributions of source code must retain the above copyright`
			`* notice, this list of conditions and the following disclaimer.`
			`* 2. Redistributions in binary form must reproduce the above copyright`
			`* notice, this list of conditions and the following disclaimer in the`
			`* documentation and/or other materials provided with the distribution.`
			`*`
			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
			`* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE`
			`* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE`
			`* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE`
			`* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL`
			`* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS`
			`* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)`
			`* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT`
			`* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY`
			`* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF`
			`* SUCH DAMAGE.`
			`*/`

- Define true and false in sys/types.h for _KERNEL consumers, and typedef bool. Due to macro expansion it seemed better to use a typedef for kernel consumers (specifically ofed won't compile without more changes if a define is used). - <stdbool.h> should also not re-define bool/true/false if they are defined by <sys/types.h>. It would probably be a programming error to define _KERNEL for user-space code, but downstream consumers like Isilon have already been including <stdbool.h> in kernel sources, and this protects that usage. - sizeof(_Bool) is not necessarily the same as sizeof(int), so kernel modules should be rebuild with this change. Bump __FreeBSD_version. MFC after: 2 weeks Sponsored by: Isilon Systems, LLC 2011-12-12 18:44:17 +00:00			`#ifndef __bool_true_false_are_defined`
Fix some nits: - whitespace: incorrect usage of tab or space - removal of comments which served either no purpose or were misleading Submitted by: bde [a while ago] 2001-02-06 23:39:06 +00:00			`#define __bool_true_false_are_defined 1`
Welcome stdbool.h. A header file from the ANSI C99 specification. It defines the boolean values. 2000-09-16 08:28:44 +01:00
Guard definitions for use with C++ code. Submitted by: Ed Hall <edhall@yahoo-inc.com> 2002-06-19 07:04:37 +01:00			`#ifndef __cplusplus`

Fix stdbool.h to actually work as advertised. PR: 22936 Submitted by: Donald J. Maddox <Donald.J.Maddox@cae88-102-101.sc.rr.com> bde 2000-11-29 14:41:00 +00:00			`#define false 0`
			`#define true 1`
Welcome stdbool.h. A header file from the ANSI C99 specification. It defines the boolean values. 2000-09-16 08:28:44 +01:00
Fix some nits: - whitespace: incorrect usage of tab or space - removal of comments which served either no purpose or were misleading Submitted by: bde [a while ago] 2001-02-06 23:39:06 +00:00			`#define bool _Bool`
Welcome stdbool.h. A header file from the ANSI C99 specification. It defines the boolean values. 2000-09-16 08:28:44 +01:00
Guard definitions for use with C++ code. Submitted by: Ed Hall <edhall@yahoo-inc.com> 2002-06-19 07:04:37 +01:00			`#endif /* !__cplusplus */`
- Define true and false in sys/types.h for _KERNEL consumers, and typedef bool. Due to macro expansion it seemed better to use a typedef for kernel consumers (specifically ofed won't compile without more changes if a define is used). - <stdbool.h> should also not re-define bool/true/false if they are defined by <sys/types.h>. It would probably be a programming error to define _KERNEL for user-space code, but downstream consumers like Isilon have already been including <stdbool.h> in kernel sources, and this protects that usage. - sizeof(_Bool) is not necessarily the same as sizeof(int), so kernel modules should be rebuild with this change. Bump __FreeBSD_version. MFC after: 2 weeks Sponsored by: Isilon Systems, LLC 2011-12-12 18:44:17 +00:00			`#endif /* __bool_true_false_are_defined */`