stdbool.h

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#ifndef RBIMPL_STDBOOL_H                             /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_STDBOOL_H
#include "ruby/internal/config.h"
 
#if defined(__bool_true_false_are_defined)
# /* Take that. */
 
#elif defined(__cplusplus)
# /* bool is a keyword in C++. */
# if defined(HAVE_STDBOOL_H) && (__cplusplus >= 201103L)
#  include <cstdbool>
# endif
#
# ifndef __bool_true_false_are_defined
#  define __bool_true_false_are_defined
# endif
 
#elif defined(HAVE_STDBOOL_H)
# /* Take stdbool.h definition. */
# include <stdbool.h>
 
#elif !defined(HAVE__BOOL)
typedef unsigned char _Bool;
# /* See also http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2229.htm */
# define bool  _Bool
# define true  ((_Bool)+1)
# define false ((_Bool)+0)
# define __bool_true_false_are_defined
#endif
 
#endif /* RBIMPL_STDBOOL_H */