xref: /netbsd-src/share/man/man3/stdlib.3 (revision 42c705227acae0f59136f6b94a3c516e4d4831b8)

.\" $NetBSD: stdlib.3,v 1.3 2011/04/10 10:02:34 jruoho Exp $
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.\" by Jukka Ruohonen.
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.Dd April 10, 2011
.Dt STDLIB 3
.Os
.Sh NAME
.Nm stdlib
.Nd standard library definitions
.Sh SYNOPSIS
.In stdlib.h
.Sh DESCRIPTION
The
.In stdlib.h
header defines the following types and macros:
.Bl -enum -offset 4n
.It
.Dv NULL
- an implementation-defined null pointer constant;
.It
.Vt size_t
and
.Vt wchar_t
- integer types described in
.Xr stddef 3 ;
.It
.Vt div_t ,
.Vt ldiv_t ,
and
.Vt lldiv_t
- structures that are returned by the
.Xr div 3 ,
.Xr ldiv 3 ,
and
.Xr lldiv 3
functions, respectively;
.It
.Dv RAND_MAX
- a macro which expands to an integer constant
that is the maximum value returned by the
.Xr rand 3
function;
.It
.Dv MB_CUR_MAX
- an integer expression of type
.Vt size_t
whose value is the maximum number of bytes in a
character specified by the current locale; and
.It
.Dv EXIT_SUCCESS
and
.Dv EXIT_FAILURE
- macros which expand to integer constants
suitable for use as an argument to the
.Xr exit 3
function.
.El
.Pp
The
.In stdlib.h
header also prototypes several important functions such as
.Xr abort 3 ,
.Xr atoi 3 ,
.Xr bsearch 3 ,
.Xr free 3 ,
.Xr malloc 3 ,
and
.Xr strtol 3 .
.Sh SEE ALSO
.Xr stddef 3 ,
.Xr types 3 ,
.Xr unistd 3
.Sh STANDARDS
As described here, the
.In stdlib.h
header conforms to
.St -isoC-99
and
.St -p1003.1-2001 .
.Sh HISTORY
In the current form the
.In stdlib.h
header was introduced in
.Nx 0.8 .