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bit type

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unknown
2004-12-17 18:06:05 +04:00
parent eaec00b19b
commit d7285006cf
27 changed files with 1051 additions and 41 deletions
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17
include/my_handler.h
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@ -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,