bionic (3) htonl.3posix.gz

Provided by: manpages-posix-dev_2013a-2_all bug

PROLOG
       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of this interface
       may differ (consult the corresponding Linux manual page for details of Linux behavior), or the  interface
       may not be implemented on Linux.


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 POSIX.1‐2008, <arpa_inet.h>, <inttypes.h>


       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition,
       Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open  Group  Base
       Specifications  Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc
       and The Open Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html .

       Any  typographical  or formatting errors that appear in this page are most likely to have been introduced
       during  the  conversion  of  the  source  files  to  man  page  format.  To  report  such   errors,   see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .