1  /* Copyright (C) 1998-2023 Free Software Foundation, Inc.
       2  
       3  This file is part of GCC.
       4  
       5  GCC is free software; you can redistribute it and/or modify
       6  it under the terms of the GNU General Public License as published by
       7  the Free Software Foundation; either version 3, or (at your option)
       8  any later version.
       9  
      10  GCC is distributed in the hope that it will be useful,
      11  but WITHOUT ANY WARRANTY; without even the implied warranty of
      12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13  GNU General Public License for more details.
      14  
      15  Under Section 7 of GPL version 3, you are granted additional
      16  permissions described in the GCC Runtime Library Exception, version
      17  3.1, as published by the Free Software Foundation.
      18  
      19  You should have received a copy of the GNU General Public License and
      20  a copy of the GCC Runtime Library Exception along with this program;
      21  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      22  <http://www.gnu.org/licenses/>.  */
      23  
      24  /*
      25   * ISO C Standard:  7.16  Boolean type and values  <stdbool.h>
      26   */
      27  
      28  #ifndef _STDBOOL_H
      29  #define _STDBOOL_H
      30  
      31  #ifndef __cplusplus
      32  
      33  #if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L
      34  /* bool, true and false are keywords.  */
      35  #else
      36  #define bool	_Bool
      37  #define true	1
      38  #define false	0
      39  #endif
      40  
      41  #else /* __cplusplus */
      42  
      43  /* Supporting _Bool in C++ is a GCC extension.  */
      44  #define _Bool	bool
      45  
      46  #endif /* __cplusplus */
      47  
      48  /* Signal that all the definitions are present.  */
      49  #define __bool_true_false_are_defined	1
      50  
      51  #endif	/* stdbool.h */