byteorder(3SOCKET) Sockets Library Functions byteorder(3SOCKET)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 gethostby‐
name(3NSL) and getservbyname(3SOCKET).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOgethostbyname(3NSL), getservbyname(3SOCKET), inet.h(3HEAD),
attributes(5)SunOS 5.10 19 Feb 2004 byteorder(3SOCKET)