diff options
Diffstat (limited to 'internal.h')
| -rw-r--r-- | internal.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/internal.h b/internal.h index 267d388363..de4403761e 100644 --- a/internal.h +++ b/internal.h @@ -73,6 +73,43 @@ extern "C" { (INTEGER_PACK_MSWORD_FIRST | \ INTEGER_PACK_MSBYTE_FIRST) +#ifndef swap16 +# define swap16(x) ((uint16_t)((((x)&0xFF)<<8) | (((x)>>8)&0xFF))) +#endif + +#ifndef swap32 +# if GCC_VERSION_SINCE(4,3,0) +# define swap32(x) __builtin_bswap32(x) +# endif +#endif + +#ifndef swap32 +# define swap32(x) ((uint32_t)((((x)&0xFF)<<24) \ + |(((x)>>24)&0xFF) \ + |(((x)&0x0000FF00)<<8) \ + |(((x)&0x00FF0000)>>8) )) +#endif + +#ifndef swap64 +# if GCC_VERSION_SINCE(4,3,0) +# define swap64(x) __builtin_bswap64(x) +# endif +#endif + +#ifndef swap64 +# ifdef HAVE_INT64_T +# define byte_in_64bit(n) ((uint64_t)0xff << (n)) +# define swap64(x) ((uint64_t)((((x)&byte_in_64bit(0))<<56) \ + |(((x)>>56)&0xFF) \ + |(((x)&byte_in_64bit(8))<<40) \ + |(((x)&byte_in_64bit(48))>>40) \ + |(((x)&byte_in_64bit(16))<<24) \ + |(((x)&byte_in_64bit(40))>>24) \ + |(((x)&byte_in_64bit(24))<<8) \ + |(((x)&byte_in_64bit(32))>>8))) +# endif +#endif + struct rb_deprecated_classext_struct { char conflict[sizeof(VALUE) * 3]; }; |