sysdeps/generic/htons.c

   1 /* Copyright (C) 1993, 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <netinet/in.h>
  20
  21 #undef  htons
  22 #undef  ntohs
  23
  24 u_int16_t
  25 htons (x)
  26      u_int16_t x;
  27 {
  28 #if BYTE_ORDER == BIG_ENDIAN
  29   return x;
  30 #elif BYTE_ORDER == LITTLE_ENDIAN
  31   return __bswap_16 (x);
  32 #else
  33 # error "What kind of system is this?"
  34 #endif
  35 }
  36 weak_alias (htons, ntohs)