diff options
author | Jakub Jelinek <jakub@redhat.com> | 2005-10-20 06:59:57 +0000 |
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committer | Jakub Jelinek <jakub@redhat.com> | 2005-10-20 06:59:57 +0000 |
commit | b7071f6fc41f4c20510de3683f39e5c8ea8a2e1e (patch) | |
tree | 852f4f1992a3c9ecbb44b822df6702c7e635fc5a /sysdeps/generic/bits/byteswap.h | |
parent | acfebba27b162b3064c616142883541eaef3f725 (diff) |
Updated to fedora-glibc-20051020T0651
Diffstat (limited to 'sysdeps/generic/bits/byteswap.h')
-rw-r--r-- | sysdeps/generic/bits/byteswap.h | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/sysdeps/generic/bits/byteswap.h b/sysdeps/generic/bits/byteswap.h index 5f08fed613..949ed0bc9d 100644 --- a/sysdeps/generic/bits/byteswap.h +++ b/sysdeps/generic/bits/byteswap.h @@ -25,32 +25,35 @@ #define _BITS_BYTESWAP_H 1 /* Swap bytes in 16 bit value. */ +#define __bswap_constant_16(x) \ + ((((x) >> 8) & 0xffu) | (((x) & 0xffu) << 8)) + #ifdef __GNUC__ # define __bswap_16(x) \ (__extension__ \ - ({ unsigned short int __bsx = (x); \ - ((((__bsx) >> 8) & 0xffu) | (((__bsx) & 0xffu) << 8)); })) + ({ unsigned short int __bsx = (x); __bswap_constant_16 (__bsx); })) #else static __inline unsigned short int __bswap_16 (unsigned short int __bsx) { - return ((((__bsx) >> 8) & 0xffu) | (((__bsx) & 0xffu) << 8)); + return __bswap_constant_16 (__bsx); } #endif /* Swap bytes in 32 bit value. */ +#define __bswap_constant_32(x) \ + ((((x) & 0xff000000u) >> 24) | (((x) & 0x00ff0000u) >> 8) | \ + (((x) & 0x0000ff00u) << 8) | (((x) & 0x000000ffu) << 24)) + #ifdef __GNUC__ # define __bswap_32(x) \ (__extension__ \ - ({ unsigned int __bsx = (x); \ - ((((__bsx) & 0xff000000u) >> 24) | (((__bsx) & 0x00ff0000u) >> 8) | \ - (((__bsx) & 0x0000ff00u) << 8) | (((__bsx) & 0x000000ffu) << 24)); })) + ({ register unsigned int __bsx = (x); __bswap_constant_32 (__bsx); })) #else static __inline unsigned int __bswap_32 (unsigned int __bsx) { - return ((((__bsx) & 0xff000000u) >> 24) | (((__bsx) & 0x00ff0000u) >> 8) | - (((__bsx) & 0x0000ff00u) << 8) | (((__bsx) & 0x000000ffu) << 24)); + return __bswap_constant_32 (__bsx); } #endif |