Manpage of BYTEORDER

BYTEORDER

Section: Linux Programmer's Manual (3)
Updated: 2015-08-08
Index
 

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

The htonl() function converts the unsigned integer hostlongfrom host byte order to network byte order.

The htons() function converts the unsigned short integer hostshortfrom host byte order to network byte order.

The ntohl() function converts the unsigned integer netlongfrom network byte order to host byte order.

The ntohs() function converts the unsigned short integer netshortfrom network byte order to host byte order.

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.  

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
InterfaceAttributeValue
htonl(), htons(), ntohl(), ntohs() Thread safetyMT-Safe
 

CONFORMING TO

POSIX.1-2001, POSIX.1-2008.

Some systems require the inclusion of <netinet/in.h>instead of <arpa/inet.h>.  

SEE ALSO

endian(3), gethostbyname(3), getservent(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
ATTRIBUTES
CONFORMING TO
SEE ALSO

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