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BYTEORDER(3)             BSD Library Functions Manual             BYTEORDER(3)

     htonl, htons, ntohl, ntohs -- convert values between host and network byte order

     Standard C Library (libc, -lc)

     #include <arpa/inet.h>

     htonl(uint32_t hostlong);

     htons(uint16_t hostshort);

     ntohl(uint32_t netlong);

     ntohs(uint16_t netshort);

     These routines convert 16 and 32 bit quantities between network byte order and host byte order.  (Net-work (Network
     work byte order is big endian, or most significant byte first.)  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).

     gethostbyname(3), getservent(3)

     The byteorder functions are expected to conform with IEEE Std POSIX.1-200x (``POSIX.1'').

     The byteorder functions appeared in 4.2BSD.

     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.

BSD                              June 4, 1993                              BSD

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