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stddef(3) [netbsd man page]

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

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STDLIB(3)						   BSD Library Functions Manual 						 STDLIB(3)

NAME
stdlib -- standard library definitions SYNOPSIS
#include <stdlib.h> DESCRIPTION
The <stdlib.h> header defines the following types and macros: 1. NULL - an implementation-defined null pointer constant; 2. size_t and wchar_t - integer types described in stddef(3); 3. div_t, ldiv_t, and lldiv_t - structures that are returned by the div(3), ldiv(3), and lldiv(3) functions, respectively; 4. RAND_MAX - a macro which expands to an integer constant that is the maximum value returned by the rand(3) function; 5. MB_CUR_MAX - an integer expression of type size_t whose value is the maximum number of bytes in a character specified by the current locale; and 6. EXIT_SUCCESS and EXIT_FAILURE - macros which expand to integer constants suitable for use as an argument to the exit(3) function. The <stdlib.h> header also prototypes several important functions such as abort(3), atoi(3), bsearch(3), free(3), malloc(3), and strtol(3). SEE ALSO
stddef(3), types(3), unistd(3) STANDARDS
As described here, the <stdlib.h> header conforms to ISO/IEC 9899:1999 (``ISO C99'') and IEEE Std 1003.1-2001 (``POSIX.1''). HISTORY
In the current form the <stdlib.h> header was introduced in NetBSD 0.8. BSD
April 10, 2011 BSD
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