4.4BSD/usr/share/man/cat3/ntohl.0

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BYTEORDER(3)                BSD Programmer's Manual               BYTEORDER(3)

NNAAMMEE
     hhttoonnll, hhttoonnss, nnttoohhll, nnttoohhss - convert values between host and network byte
     order

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<ssyyss//ppaarraamm..hh>>

     _u___l_o_n_g
     hhttoonnll(_u___l_o_n_g _h_o_s_t_l_o_n_g);

     _u___s_h_o_r_t
     hhttoonnss(_u___s_h_o_r_t _h_o_s_t_s_h_o_r_t);

     _u___l_o_n_g
     nnttoohhll(_u___l_o_n_g _n_e_t_l_o_n_g);

     _u___s_h_o_r_t
     nnttoohhss(_u___s_h_o_r_t _n_e_t_s_h_o_r_t);

DDEESSCCRRIIPPTTIIOONN
     These routines convert 16 and 32 bit quantities between network byte or-
     der and host byte order.  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).

SSEEEE AALLSSOO
     gethostbyname(3),  getservent(3)

HHIISSTTOORRYY
     The bbyytteeoorrddeerr functions appeared in 4.2BSD.

BBUUGGSS
     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.

4.2 Berkeley Distribution        June 4, 1993                                1