Welcome stdbool.h. A header file from the ANSI C99 specification.

It defines the boolean values.

1 files changed, 54 insertions, 0 deletions

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+/*
+ * Copyright (c) 2000 Jeroen Ruigrok van der Werven <asmodai@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+/* This should be compliant with the ANSI C99 definition */
+
+#ifndef	_STDBOOL_H_
+#define	_STDBOOL_H_	
+
+/* `_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
+
+/* User visible type `bool' is provided as a macro which may be redefined */
+#define bool _Bool
+
+/* Inform that everything is fine */
+#define __bool_true_false_are_defined 1
+
+#if __STDC_VERSION__ < 199901L
+typedef int	_Bool;		/* not built into pre-C99 compilers */
+#endif
+
+#endif /* _STDBOOL_H_ */