| /* Copyright (C) 2011-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #if !defined _BYTESWAP_H && !defined _NETINET_IN_H && !defined _ENDIAN_H |
| # error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead." |
| #endif |
| |
| #ifndef _BITS_BYTESWAP_H |
| #define _BITS_BYTESWAP_H 1 |
| |
| #include <bits/types.h> |
| |
| /* gcc __builtin_bswap64() can constant-fold, etc, so always use it. */ |
| #define __bswap_16(x) ((unsigned short)(__builtin_bswap32(x) >> 16)) |
| #define __bswap_32(x) ((unsigned int)__builtin_bswap32(x)) |
| #define __bswap_64(x) ((__uint64_t)__builtin_bswap64(x)) |
| |
| #define __bswap_constant_16(x) __bswap_16(x) |
| #define __bswap_constant_32(x) __bswap_32(x) |
| #define __bswap_constant_64(x) __bswap_64(x) |
| |
| #endif /* _BITS_BYTESWAP_H */ |
