gcc/ginclude/stdbool.h

   1 /* Copyright (C) 1998-2017 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 #define bool    _Bool
  34 #define true    1
  35 #define false   0
  36
  37 #else /* __cplusplus */
  38
  39 /* Supporting _Bool in C++ is a GCC extension.  */
  40 #define _Bool   bool
  41
  42 #if __cplusplus < 201103L
  43 /* Defining these macros in C++98 is a GCC extension.  */
  44 #define bool    bool
  45 #define false   false
  46 #define true    true
  47 #endif
  48
  49 #endif /* __cplusplus */
  50
  51 /* Signal that all the definitions are present.  */
  52 #define __bool_true_false_are_defined   1
  53
  54 #endif  /* stdbool.h */