1 /*===---- stdbool.h - Standard header for booleans -------------------------=== 2 * 3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 * See https://llvm.org/LICENSE.txt for license information. 5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 * 7 *===-----------------------------------------------------------------------=== 8 */ 9 10 #ifndef __STDBOOL_H 11 #define __STDBOOL_H 12 13 #define __bool_true_false_are_defined 1 14 15 #if __STDC_VERSION__ > 201710L 16 /* FIXME: We should be issuing a deprecation warning here, but cannot yet due 17 * to system headers which include this header file unconditionally. 18 */ 19 #elif !defined(__cplusplus) 20 #define bool _Bool 21 #define true 1 22 #define false 0 23 #elif defined(__GNUC__) && !defined(__STRICT_ANSI__) 24 /* Define _Bool as a GNU extension. */ 25 #define _Bool bool 26 #if __cplusplus < 201103L 27 /* For C++98, define bool, false, true as a GNU extension. */ 28 #define bool bool 29 #define false false 30 #define true true 31 #endif 32 #endif 33 34 #endif /* __STDBOOL_H */ 35