Content-type: text/html Man page of byteorder

byteorder

Section: Sockets Library Functions (3SOCKET)
Updated: 19 Feb 2004
Index Return to Main Contents
 

NAME

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

SYNOPSIS

cc [ flag... ] file... -lsocket -lnsl [ library... ]
#include <sys/types.h>
#include <netinet/in.h>
#include <inttypes.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 routines convert 16-bit and 32-bit quantities between network byte order and host byte order. On some architectures these routines are defined as NULL macros in the include file <netinet/in.h>. On other architectures, the routines are functional when the host byte order is different from network byte order.

The routines are most often used in conjunction with Internet addresses and ports as returned by gethostent() and getservent(). See gethostbyname(3NSL) and getservbyname(3SOCKET).  

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
MT-LevelSafe

 

SEE ALSO

gethostbyname(3NSL), getservbyname(3SOCKET), inet.h(3HEAD), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
ATTRIBUTES
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 02:38:31 GMT, October 02, 2010