These functions shall convert 16-bit and 32-bit quantities between network byte
order and host byte order.
On some implementations, these functions are defined as macros.
The uint32_t and uint16_t types are defined in
The htonl() and htons() functions shall return the argument value
converted from host to network byte order.
The ntohl() and ntohs() functions shall return the argument value
converted from network to host byte order.
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html