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NAME
htonl
htons
ntohl
ntohs
- convert values between host and network byte order
LIBRARY
Lb libc
SYNOPSIS
#include <arpa/inet.h>
or
#include <netinet/in.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 and 32 bit quantities between network
byte order and host byte order.
On machines which have a byte order which is the same as the network
order, routines are defined as null macros.
These routines are most often used in conjunction with Internet
addresses and ports as returned by
gethostbyname (3)
and
getservent (3).
SEE ALSO
gethostbyname (3),
getservent (3),
byteorder (9)
STANDARDS
The
byteorder
functions conform to
St -p1003.1-2001 .
HISTORY
The
byteorder
functions appeared in
BSD 4.2
BUGS
On the
VAX
bytes are handled backwards from most everyone else in
the world.
This is not expected to be fixed in the near future.
Index
NAME
LIBRARY
SYNOPSIS
DESCRIPTION
SEE ALSO
STANDARDS
HISTORY
BUGS
