diff options
Diffstat (limited to 'include/my_handler.h')
| -rw-r--r-- | include/my_handler.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/my_handler.h b/include/my_handler.h index d81c4590f8e..9ddc0c61eee 100644 --- a/include/my_handler.h +++ b/include/my_handler.h @@ -34,6 +34,8 @@ typedef struct st_HA_KEYSEG /* Key-portion */ uint32 start; /* Start of key in record */ uint32 null_pos; /* position to NULL indicator */ CHARSET_INFO *charset; + uint8 bit_length; /* Length of bit part */ + uint16 bit_pos; /* Position to bit part */ } HA_KEYSEG; #define get_key_length(length,key) \ @@ -64,6 +66,21 @@ typedef struct st_HA_KEYSEG /* Key-portion */ { *(key)=255; mi_int2store((key)+1,(length)); (key)+=3; } \ } +#define get_rec_bits(bit_ptr, bit_ofs, bit_len) \ + (((((uint16) (bit_ptr)[1] << 8) | (uint16) (bit_ptr)[0]) >> (bit_ofs)) & \ + ((1 << (bit_len)) - 1)) + +#define set_rec_bits(bits, bit_ptr, bit_ofs, bit_len) \ +{ \ + (bit_ptr)[0]= ((bit_ptr)[0] & ((1 << (bit_ofs)) - 1)) | \ + ((bits) << (bit_ofs)); \ + if ((bit_ofs) + (bit_len) > 8) \ + (bit_ptr)[1]= ((bits) & ((1 << (bit_len)) - 1)) >> (8 - (bit_ofs)); \ +} + +#define clr_rec_bits(bit_ptr, bit_ofs, bit_len) \ + set_rec_bits(0, bit_ptr, bit_ofs, bit_len) + extern int mi_compare_text(CHARSET_INFO *, uchar *, uint, uchar *, uint , my_bool, my_bool); extern int ha_key_cmp(register HA_KEYSEG *keyseg, register uchar *a, |