@node htonl, cpu
@findex htonl
@subheading Syntax

@example
#include <netinet/in.h>

unsigned long htonl(unsigned long val);
@end example

@subheading Description

This function converts from host formatted longs to network formatted
longs.  For the i386 and higher processors, this means that the bytes
are swapped from 1234 order to 4321 order.

@subheading Return Value

The network-order value.

@subheading Portability

@portability !ansi, !posix

@subheading Example

@example
packet.ipaddr = htonl(ip);
@end example