1  /* Copyright (C) 1993-2023 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, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <netinet/in.h>
      19  
      20  #undef	htons
      21  #undef	ntohs
      22  
      23  uint16_t
      24  htons (uint16_t x)
      25  {
      26  #if BYTE_ORDER == BIG_ENDIAN
      27    return x;
      28  #elif BYTE_ORDER == LITTLE_ENDIAN
      29    return __bswap_16 (x);
      30  #else
      31  # error "What kind of system is this?"
      32  #endif
      33  }
      34  weak_alias (htons, ntohs)