llvm-project/clang/lib/Headers/stdbool.h

/*===---- 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

/* Don't define bool, true, and false in C++, except as a GNU extension. */
#ifndef __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 __cplusplus < 201103L
/* For C++98, define bool, false, true as a GNU extension. */
#define bool  bool
#define false false
#define true  true
#endif
#endif

#define __bool_true_false_are_defined 1

#endif /* __STDBOOL_H */