1 /* Copyright (C) 1993-2022 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 htons(uint16_t x)24htons (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) 35