b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
92 lines
2.9 KiB
Groff
92 lines
2.9 KiB
Groff
.\" $NetBSD: byteorder.3,v 1.14 2006/02/04 22:47:28 uwe Exp $
|
|
.\"
|
|
.\" Copyright (c) 1983, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)byteorder.3 8.1 (Berkeley) 6/4/93
|
|
.\"
|
|
.Dd June 10, 2004
|
|
.Dt BYTEORDER 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm htonl ,
|
|
.Nm htons ,
|
|
.Nm ntohl ,
|
|
.Nm ntohs
|
|
.Nd convert values between host and network byte order
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In arpa/inet.h
|
|
.Ft uint32_t
|
|
.Fn htonl "uint32_t host32"
|
|
.Ft uint16_t
|
|
.Fn htons "uint16_t host16"
|
|
.Ft uint32_t
|
|
.Fn ntohl "uint32_t net32"
|
|
.Ft uint16_t
|
|
.Fn ntohs "uint16_t net16"
|
|
.Sh DESCRIPTION
|
|
These routines convert 16 and 32 bit quantities between network
|
|
byte order and host byte order.
|
|
.Pp
|
|
On machines which have a byte order which is the same as the network
|
|
order, these routines are defined as macros that expand to the value of
|
|
their argument.
|
|
.Pp
|
|
These routines are most often used in conjunction with Internet
|
|
addresses and ports as returned by
|
|
.Xr gethostbyname 3
|
|
and
|
|
.Xr getservent 3 .
|
|
.Sh SEE ALSO
|
|
.Xr gethostbyname 3 ,
|
|
.Xr getservent 3
|
|
.Sh STANDARDS
|
|
The
|
|
.Fn htonl ,
|
|
.Fn htons ,
|
|
.Fn ntohl ,
|
|
and
|
|
.Fn ntohs
|
|
functions conform to
|
|
.St -p1003.1-2001 .
|
|
Their use of the fixed-width integer types
|
|
.Fa uint16_t
|
|
and
|
|
.Fa uint32_t
|
|
first appeared in
|
|
.St -xns5 .
|
|
.Sh HISTORY
|
|
The
|
|
.Nm byteorder
|
|
functions appeared in
|
|
.Bx 4.2 .
|
|
.Sh BUGS
|
|
The `l' and `s' suffixes in the names are not meaningful in machines
|
|
where long integers are not 32 bits.
|