NAME
stdlib
—
standard library definitions
SYNOPSIS
#include
<stdlib.h>
DESCRIPTION
The<stdlib.h>
header defines
the following types and macros:
NULL
- an implementation-defined null pointer constant;- size_t and wchar_t - integer types described in stddef(3);
- div_t, ldiv_t, and lldiv_t - structures that are returned by the div(3), ldiv(3), and lldiv(3) functions, respectively;
RAND_MAX
- a macro which expands to an integer constant that is the maximum value returned by the rand(3) function;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; andEXIT_SUCCESS
andEXIT_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
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.