HTONL(3XNET) X/Open Networking Services Library Functions HTONL(3XNET)
NAME
htonl, htons, ntohl, ntohs - convert values between host and network
byte order
SYNOPSIS
cc [
flag ... ]
file ...
-lxnet [
library ... ]
#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 convert 16-bit and 32-bit quantities between network
byte order and host byte order.
The
uint32_t and
uint16_t types are made available by inclusion of
<inttypes.h>.
USAGE
These functions are most often used in conjunction with Internet
addresses and ports as returned by
gethostent(3XNET) and
getservent(3XNET).
On some architectures these functions are defined as macros that
expand to the value of their argument.
RETURN VALUES
The
htonl() and
htons() functions return the argument value converted
from host to network byte order.
The
ntohl() and
ntohs() functions return the argument value converted
from network to host byte order.
ERRORS
No errors are defined.
ATTRIBUTES
See
attributes(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Standard |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+
SEE ALSO
endhostent(3XNET),
endservent(3XNET),
attributes(7),
standards(7) June 10, 2002 HTONL(3XNET)
