146 lines
3.3 KiB
HTML
146 lines
3.3 KiB
HTML
|
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
|
<HTML><HEAD><TITLE>Man page of BYTEORDER</TITLE>
|
|
</HEAD><BODY>
|
|
<H1>BYTEORDER</H1>
|
|
Section: Linux Programmer's Manual (3)<BR>Updated: 2017-09-15<BR><A HREF="#index">Index</A>
|
|
<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
|
|
|
|
<A NAME="lbAB"> </A>
|
|
<H2>NAME</H2>
|
|
|
|
htonl, htons, ntohl, ntohs - convert values between host and network
|
|
byte order
|
|
<A NAME="lbAC"> </A>
|
|
<H2>SYNOPSIS</H2>
|
|
|
|
<PRE>
|
|
<B>#include <<A HREF="file:///usr/include/arpa/inet.h">arpa/inet.h</A>></B>
|
|
|
|
<B>uint32_t htonl(uint32_t </B><I>hostlong</I><B>);</B>
|
|
|
|
<B>uint16_t htons(uint16_t </B><I>hostshort</I><B>);</B>
|
|
|
|
<B>uint32_t ntohl(uint32_t </B><I>netlong</I><B>);</B>
|
|
|
|
<B>uint16_t ntohs(uint16_t </B><I>netshort</I><B>);</B>
|
|
</PRE>
|
|
|
|
<A NAME="lbAD"> </A>
|
|
<H2>DESCRIPTION</H2>
|
|
|
|
The
|
|
<B>htonl</B>()
|
|
|
|
function converts the unsigned integer
|
|
<I>hostlong</I>
|
|
|
|
from host byte order to network byte order.
|
|
<P>
|
|
|
|
The
|
|
<B>htons</B>()
|
|
|
|
function converts the unsigned short integer
|
|
<I>hostshort</I>
|
|
|
|
from host byte order to network byte order.
|
|
<P>
|
|
|
|
The
|
|
<B>ntohl</B>()
|
|
|
|
function converts the unsigned integer
|
|
<I>netlong</I>
|
|
|
|
from network byte order to host byte order.
|
|
<P>
|
|
|
|
The
|
|
<B>ntohs</B>()
|
|
|
|
function converts the unsigned short integer
|
|
<I>netshort</I>
|
|
|
|
from network byte order to host byte order.
|
|
<P>
|
|
|
|
On the i386 the host byte order is Least Significant Byte first,
|
|
whereas the network byte order, as used on the Internet, is Most
|
|
Significant Byte first.
|
|
<A NAME="lbAE"> </A>
|
|
<H2>ATTRIBUTES</H2>
|
|
|
|
For an explanation of the terms used in this section, see
|
|
<B><A HREF="/cgi-bin/man/man2html?7+attributes">attributes</A></B>(7).
|
|
|
|
<TABLE BORDER>
|
|
<TR VALIGN=top><TD><B>Interface</B></TD><TD><B>Attribute</B></TD><TD><B>Value</B><BR></TD></TR>
|
|
<TR VALIGN=top><TD>
|
|
<B>htonl</B>(),
|
|
|
|
<B>htons</B>(),
|
|
|
|
<B>ntohl</B>(),
|
|
|
|
<B>ntohs</B>()
|
|
|
|
</TD><TD>Thread safety</TD><TD>MT-Safe<BR></TD></TR>
|
|
</TABLE>
|
|
|
|
<A NAME="lbAF"> </A>
|
|
<H2>CONFORMING TO</H2>
|
|
|
|
POSIX.1-2001, POSIX.1-2008.
|
|
<P>
|
|
|
|
Some systems require the inclusion of
|
|
<I><<A HREF="file:///usr/include/netinet/in.h">netinet/in.h</A>></I>
|
|
|
|
instead of
|
|
<I><<A HREF="file:///usr/include/arpa/inet.h">arpa/inet.h</A>></I>.
|
|
|
|
<A NAME="lbAG"> </A>
|
|
<H2>SEE ALSO</H2>
|
|
|
|
<B><A HREF="/cgi-bin/man/man2html?3+bswap">bswap</A></B>(3),
|
|
|
|
<B><A HREF="/cgi-bin/man/man2html?3+endian">endian</A></B>(3),
|
|
|
|
<B><A HREF="/cgi-bin/man/man2html?3+gethostbyname">gethostbyname</A></B>(3),
|
|
|
|
<B><A HREF="/cgi-bin/man/man2html?3+getservent">getservent</A></B>(3)
|
|
|
|
<A NAME="lbAH"> </A>
|
|
<H2>COLOPHON</H2>
|
|
|
|
This page is part of release 5.05 of the Linux
|
|
<I>man-pages</I>
|
|
|
|
project.
|
|
A description of the project,
|
|
information about reporting bugs,
|
|
and the latest version of this page,
|
|
can be found at
|
|
<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
|
|
<P>
|
|
|
|
<HR>
|
|
<A NAME="index"> </A><H2>Index</H2>
|
|
<DL>
|
|
<DT id="1"><A HREF="#lbAB">NAME</A><DD>
|
|
<DT id="2"><A HREF="#lbAC">SYNOPSIS</A><DD>
|
|
<DT id="3"><A HREF="#lbAD">DESCRIPTION</A><DD>
|
|
<DT id="4"><A HREF="#lbAE">ATTRIBUTES</A><DD>
|
|
<DT id="5"><A HREF="#lbAF">CONFORMING TO</A><DD>
|
|
<DT id="6"><A HREF="#lbAG">SEE ALSO</A><DD>
|
|
<DT id="7"><A HREF="#lbAH">COLOPHON</A><DD>
|
|
</DL>
|
|
<HR>
|
|
This document was created by
|
|
<A HREF="/cgi-bin/man/man2html">man2html</A>,
|
|
using the manual pages.<BR>
|
|
Time: 00:05:37 GMT, March 31, 2021
|
|
</BODY>
|
|
</HTML>
|