diff options
Diffstat (limited to 'bits')
| -rw-r--r-- | bits/byteswap-16.h | 33 | ||||
| -rw-r--r-- | bits/byteswap.h | 13 |
2 files changed, 35 insertions, 11 deletions
diff --git a/bits/byteswap-16.h b/bits/byteswap-16.h new file mode 100644 index 0000000000..078dd0e17a --- /dev/null +++ b/bits/byteswap-16.h @@ -0,0 +1,33 @@ +/* Macros to swap the order of bytes in 16-bit integer values. + Copyright (C) 2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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/>. */ + +#ifndef _BITS_BYTESWAP_H +# error "Never use <bits/byteswap-16.h> directly; include <byteswap.h> instead." +#endif + +#ifdef __GNUC__ +# define __bswap_16(x) \ + (__extension__ \ + ({ unsigned short int __bsx = (x); __bswap_constant_16 (__bsx); })) +#else +static __inline unsigned short int +__bswap_16 (unsigned short int __bsx) +{ + return __bswap_constant_16 (__bsx); +} +#endif diff --git a/bits/byteswap.h b/bits/byteswap.h index 31e9a16716..6e3ed3ffae 100644 --- a/bits/byteswap.h +++ b/bits/byteswap.h @@ -27,17 +27,8 @@ #define __bswap_constant_16(x) \ ((((x) >> 8) & 0xffu) | (((x) & 0xffu) << 8)) -#ifdef __GNUC__ -# define __bswap_16(x) \ - (__extension__ \ - ({ unsigned short int __bsx = (x); __bswap_constant_16 (__bsx); })) -#else -static __inline unsigned short int -__bswap_16 (unsigned short int __bsx) -{ - return __bswap_constant_16 (__bsx); -} -#endif +/* Get __bswap_16. */ +#include <bits/byteswap-16.h> /* Swap bytes in 32 bit value. */ #define __bswap_constant_32(x) \ |