stdbool.h

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/*===---- stdbool.h - Standard header for booleans -------------------------===
 *
 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 * See https://llvm.org/LICENSE.txt for license information.
 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 *
 *===-----------------------------------------------------------------------===
 */
 
#ifndef __STDBOOL_H
#define __STDBOOL_H
 
#define __bool_true_false_are_defined 1
 
#if defined(__STDC_VERSION__) && __STDC_VERSION__ > 201710L
/* FIXME: We should be issuing a deprecation warning here, but cannot yet due
 * to system headers which include this header file unconditionally.
 */
#elif !defined(__cplusplus)
#define bool _Bool
#define true 1
#define false 0
#elif defined(__GNUC__) && !defined(__STRICT_ANSI__)
/* Define _Bool as a GNU extension. */
#define _Bool bool
#if defined(__cplusplus) && __cplusplus < 201103L
/* For C++98, define bool, false, true as a GNU extension. */
#define bool bool
#define false false
#define true true
#endif
#endif
 
#endif /* __STDBOOL_H */