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Diffstat (limited to 'innobase/include/mach0data.ic')
| -rw-r--r-- | innobase/include/mach0data.ic | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/innobase/include/mach0data.ic b/innobase/include/mach0data.ic index 3ffb9baa344..888f3f743e4 100644 --- a/innobase/include/mach0data.ic +++ b/innobase/include/mach0data.ic @@ -68,6 +68,37 @@ mach_read_from_2( ); } +/************************************************************ +The following function is used to convert a 16-bit data item +to the canonical format, for fast bytewise equality test +against memory. */ +UNIV_INLINE +uint16 +mach_encode_2( +/*==========*/ + /* out: 16-bit integer in canonical format */ + ulint n) /* in: integer in machine-dependent format */ +{ + uint16 ret; + ut_ad(2 == sizeof ret); + mach_write_to_2((byte*) &ret, n); + return(ret); +} +/************************************************************ +The following function is used to convert a 16-bit data item +from the canonical format, for fast bytewise equality test +against memory. */ +UNIV_INLINE +ulint +mach_decode_2( +/*==========*/ + /* out: integer in machine-dependent format */ + uint16 n) /* in: 16-bit integer in canonical format */ +{ + ut_ad(2 == sizeof n); + return(mach_read_from_2((byte*) &n)); +} + /*********************************************************** The following function is used to store data in 3 consecutive bytes. We store the most significant byte to the lowest address. */ |