stdbool(3) [netbsd man page]

STDBOOL(3)						   BSD Library Functions Manual 						STDBOOL(3)

NAME

     stdbool -- standard boolean types

SYNOPSIS

     #include <stdbool.h>

DESCRIPTION

     The <stdbool.h> header defines four macros:

	 1.   bool, which expands to _Bool;

	 2.   true, which expands to the integer constant 1;

	 3.   false, which expands to the integer constant 0; and

	 4.   __bool_true_false_are_defined, which expands to the constant 1.

     The ability to undefine and redefine the macros bool, true, and false is an obsolescent feature that may be withdrawn in a future version of
     a standard.

SEE ALSO

     stdint(3)

STANDARDS

     The <stdbool.h> header conforms to ISO/IEC 9899:1999 (``ISO C99'') and IEEE Std 1003.1-2001 (``POSIX.1'').

HISTORY

     The <stdbool.h> header was first introduced in NetBSD 1.6.

BSD
								  March 21, 2010							       BSD

STDDEF(3)						   BSD Library Functions Manual 						 STDDEF(3)

NAME

     stddef -- standard type definitions

SYNOPSIS

     #include <stddef.h>

DESCRIPTION

     The <stddef.h> header defines the following types and macros:

	 1.   ptrdiff_t, a signed integer type of the result of subtracting two pointers;

	 2.   size_t, an unsigned integer type of the result of the sizeof() operator;

	 3.   wchar_t, an integer type whose range of values can represent distinct wide-character codes for all members of the largest character
	      set specified among the supported locales: the null character has the code value 0 and each member of the character set has a code
	      value equal to its value when used as the lone character in an integer character constant;

	 4.   NULL, which expands to an implementation-defined null pointer constant; and

	 5.   offsetof(), a macro that expands to an integer constant as described in offsetof(3).

     Some of the described types and macros may appear also in other headers.

SEE ALSO

     offsetof(3), stdlib(3), unistd(3)

STANDARDS

     As described here, the <stddef.h> header conforms to ISO/IEC 9899:1999 (``ISO C99'') and IEEE Std 1003.1-2001 (``POSIX.1'').  Some of the
     types and macros conform to earlier standards such as ANSI X3.159-1989 (``ANSI C89'').

HISTORY

     In the current form the <stddef.h> header was introduced in NetBSD 0.8, the first official release of NetBSD.  Some definitions such as NULL
     were first introduced already in the <nsys/param.h> header of Version 4 AT&T UNIX.

BSD
								  April 10, 2011							       BSD