htonl(), htons(), ntohl(), ntohs() — convert values between host and network byte order
unsigned long htonl(unsigned long hostlong);
unsigned short htons(unsigned short hostshort);
unsigned long ntohl(unsigned long netlong);
unsigned short ntohs(unsigned short netshort);
These routines convert 16- and 32-bit quantities
between network byte order and host byte order.
On HP-UX systems, network and host byte orders are identical,
so these routines are defined as null macros in the include file
is defined then these routines are defined
in the include file
These routines are most often used
in conjunction with Internet addresses and ports as returned by
Use these routines to write portable programs.
was developed by the University of California, Berkeley.