htonl(3p) - phpMan

HTONL(P)                                                              HTONL(P)



NAME
       htonl, htons, ntohl, ntohs - convert values between host and network byte order

SYNOPSIS
       #include <arpa/inet.h>

       uint32_t htonl(uint32_t hostlong);
       uint16_t htons(uint16_t hostshort);
       uint32_t ntohl(uint32_t netlong);
       uint16_t ntohs(uint16_t netshort);


DESCRIPTION
       These  functions  shall  convert  16-bit and 32-bit quantities between network byte
       order and host byte order.

       On some implementations, these functions are defined as macros.

       The uint32_t and uint16_t types are defined in <inttypes.h>.

RETURN VALUE
       The htonl() and htons() functions shall return the argument  value  converted  from
       host to network byte order.

       The  ntohl()  and  ntohs() functions shall return the argument value converted from
       network to host byte order.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       These functions are most often used in conjunction with IPv4 addresses and ports as
       returned by gethostent() and getservent().

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       endhostent()  , endservent() , the Base Definitions volume of IEEE Std 1003.1-2001,
       <inttypes.h>, <arpa/inet.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std
       1003.1,  2003  Edition,  Standard  for Information Technology -- Portable Operating
       System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C)
       2001-2003  by  the  Institute  of Electrical and Electronics Engineers, Inc and The
       Open Group. In the event of any discrepancy between this version and  the  original
       IEEE  and The Open Group Standard, the original IEEE and The Open Group Standard is
       the  referee  document.  The  original  Standard  can   be   obtained   online   at
       http://www.opengroup.org/unix/online.html .



POSIX                                2003                             HTONL(P)

Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache/1.3.41 (Unix) PHP/5.2.5 mod_perl/1.30 mod_gzip/1.3.26.1a
Under GNU General Public License
2009-01-09 07:00 @38.103.63.58 CrawledBy CCBot/1.0 (+http://www.commoncrawl.org/bot.html)