1.\" $NetBSD: stdlib.3,v 1.3 2011/04/10 10:02:34 jruoho Exp $ 2.\" 3.\" Copyright (c) 2010 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Jukka Ruohonen. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd April 10, 2011 31.Dt STDLIB 3 32.Os 33.Sh NAME 34.Nm stdlib 35.Nd standard library definitions 36.Sh SYNOPSIS 37.In stdlib.h 38.Sh DESCRIPTION 39The 40.In stdlib.h 41header defines the following types and macros: 42.Bl -enum -offset 4n 43.It 44.Dv NULL 45- an implementation-defined null pointer constant; 46.It 47.Vt size_t 48and 49.Vt wchar_t 50- integer types described in 51.Xr stddef 3 ; 52.It 53.Vt div_t , 54.Vt ldiv_t , 55and 56.Vt lldiv_t 57- structures that are returned by the 58.Xr div 3 , 59.Xr ldiv 3 , 60and 61.Xr lldiv 3 62functions, respectively; 63.It 64.Dv RAND_MAX 65- a macro which expands to an integer constant 66that is the maximum value returned by the 67.Xr rand 3 68function; 69.It 70.Dv MB_CUR_MAX 71- an integer expression of type 72.Vt size_t 73whose value is the maximum number of bytes in a 74character specified by the current locale; and 75.It 76.Dv EXIT_SUCCESS 77and 78.Dv EXIT_FAILURE 79- macros which expand to integer constants 80suitable for use as an argument to the 81.Xr exit 3 82function. 83.El 84.Pp 85The 86.In stdlib.h 87header also prototypes several important functions such as 88.Xr abort 3 , 89.Xr atoi 3 , 90.Xr bsearch 3 , 91.Xr free 3 , 92.Xr malloc 3 , 93and 94.Xr strtol 3 . 95.Sh SEE ALSO 96.Xr stddef 3 , 97.Xr types 3 , 98.Xr unistd 3 99.Sh STANDARDS 100As described here, the 101.In stdlib.h 102header conforms to 103.St -isoC-99 104and 105.St -p1003.1-2001 . 106.Sh HISTORY 107In the current form the 108.In stdlib.h 109header was introduced in 110.Nx 0.8 . 111