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 isoC-99 and p1003.1-2001.

HISTORY
In the current form the <stdlib.h> header was introduced in NetBSD 0.8.