lib/stdbool_.h

   1 /* Copyright (C) 2001-2002 Free Software Foundation, Inc.
   2    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 #ifndef _STDBOOL_H
  19 #define _STDBOOL_H
  20
  21 /* ISO C 99 <stdbool.h> for platforms that lack it.  */
  22
  23 /* 7.16. Boolean type and values */
  24
  25 /* BeOS <sys/socket.h> already #defines false 0, true 1.  We use the same
  26    definitions below, but temporarily we have to #undef them.  */
  27 #ifdef __BEOS__
  28 # undef false
  29 # undef true
  30 #endif
  31
  32 /* For the sake of symbolic names in gdb, define _Bool as an enum type.  */
  33 #ifndef __cplusplus
  34 # if !@HAVE__BOOL@
  35 typedef enum { false = 0, true = 1 } _Bool;
  36 # endif
  37 #else
  38 typedef bool _Bool;
  39 #endif
  40 #define bool _Bool
  41
  42 /* The other macros must be usable in preprocessor directives.  */
  43 #define false 0
  44 #define true 1
  45 #define __bool_true_false_are_defined 1
  46
  47 #endif /* _STDBOOL_H */