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-rw-r--r--include/stdbool.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/include/stdbool.h b/include/stdbool.h
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+++ b/include/stdbool.h
@@ -0,0 +1,45 @@
+/* $OpenBSD: stdbool.h,v 1.7 2015/09/04 23:47:09 daniel Exp $ */
+
+/*
+ * Written by Marc Espie, September 25, 1999
+ * Public domain.
+ */
+
+#ifndef _STDBOOL_H_
+#define _STDBOOL_H_
+
+#ifndef __cplusplus
+
+#if defined(__GNUC__) || \
+ (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901)
+/* Support for C99: type _Bool is already built-in. */
+#define false 0
+#define true 1
+
+#else
+/* `_Bool' type must promote to `int' or `unsigned int'. */
+typedef enum {
+ false = 0,
+ true = 1
+} _Bool;
+
+/* And those constants must also be available as macros. */
+#define false false
+#define true true
+
+#endif
+
+/* User visible type `bool' is provided as a macro which may be redefined */
+#define bool _Bool
+
+#else /* __cplusplus */
+#define _Bool bool
+#define bool bool
+#define false false
+#define true true
+#endif /* __cplusplus */
+
+/* Inform that everything is fine */
+#define __bool_true_false_are_defined 1
+
+#endif /* _STDBOOL_H_ */